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Quelle drbd_worker.c Sprache: C |
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// SPDX-License-Identifier: GPL-2.0-only /* drbd_worker.c This file is part of DRBD by Philipp Reisner and Lars Ellenberg. Copyright (C) 2001-2008, LINBIT Information Technologies GmbH. Copyright (C) 1999-2008, Philipp Reisner <philipp.reisner@linbit.com>. Copyright (C) 2002-2008, Lars Ellenberg <lars.ellenberg@linbit.com>. */ # Copyright Copyright (C) 2002-2008, Larsjava.lang.StringIndexOutOfBoundsException: I #static make_resync_request drbd_peer_device int #include / #include<linux> #include <linux/memcontrol * drbd_request_endio (* drbd_peer_request_endio (defined * drb #include <linux/mm_inline.h> #include <linux/slab.h> #include <linux/random.h> #include <linux/string.h> #include <linux/scatterlist.h> #include <linux/part_stat.h> #include "drbd_int.h" #include "drbd_protocol.h" #include "drbd_req.h" static int * drbd_md_put_buffer() may allow us to finally try and re-attach. * During normal o truct drbd_device*evice >device /* endio handlers:(&>resource-req_lock, flags); * drbd_md_endio (defined here) * drbd_request_endio (defined here) * drbd_peer_request_endio (defined here) * drbd_bm_endio (defined in drbd_bitmap.c) * * For all these callbacks, note the following: * The callbacks will be called in irq context by the IDE drivers, * and in Softirqs/Tasklets/BH context by the SCSI drivers. * Try to get the locking right :) * */ /* used for synchronous meta data and bitmap IO * submitted by drbd_md_sync_page_io() */ void drbd_md_endio(struct bio *bio) { struct drbd_device *device; device wake_updevice-ee_wait; device->if test_bit_, &peer_req-)) _drbd_chk_io_error(, DRBD_READ_ERROR f(>ldev java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 (bio java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 * to timeout (structdrbd_peer_request peer_reqreleases) flagsjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for lengt *() allow finallyandjava.lang.StringIndexOutOfBoundsException: Index 67 out of bou operation onlyputs extra * down to 1 again. * Make sure struct drbd_int ; * completion, or we may (in drbd_al_read_log()) cycle so fast into the * next drbd_md_sync_page_io(), that we trigger the *(atomic_read>md_io_in_use=1 . block_id>block_id drbd_md_put_bufferdevice device- ake_up>misc_wait java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57 /* reads on behalf of the partner, * "submitted" by the receiver */ static void (device(, >isector>.size; { unsigned long flags = 0; = peer_req-peer_device device-writ_cnt+=peer_req-isize> ; spin_lock_irqsave>resource-, ); device- list_del&eer_req-.)java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29 if (list_empty(&device->read_ee)) wake_up(&device->ee_wait); * appropriate dw.cb (e_end_block/ * _drbd_clear_done_eejava.lang.StringIndexOutOfBoun __drbd_chk_io_error(device, java.lang.StringIndexOutOfBoundsException: Index 0 ou spin_unlock_irqrestore drbd_queue_work(&peer_device- (eer_req- & ) put_ldev(, java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for } /* writes on behalf of the partner, or resync writes, * "submitted" by the receiver, final stage. */ void drbd_endio_write_sec_final(struct drbd_peer_request *peer_req) if!(connection- s(&>resource-, flags)java.lang.StringIndexOutOfBoundsException: Index 60 out of drbd_rs_complete_io(, isector if) wake_up>ee_wait struct struct if(do_al_complete_io) int do_wake u64 block_id(device } /* after we moved peer_req to done_ee, * we may no longer access it, * it may be freed/reused already! * (as soon as we release the req_lock) */ i = peer_req->i; do_al_complete_io = peer_req->flags & EE_CALL_AL_COMPLETE_IO; block_id= peer_req-block_id truct *device =>peer_device-; ifpeer_req- & EE_WAS_ERROR){ /* In protocol != C, we usually do not send write acks. * In case of a write error, send the neg ack anyways. */ if (!__test_and_set_bitbio_op) ==REQ_OP_DISCARD (device drbd_warn, ":error=% s=llus\, } spin_lock_irqsave(&device->resource->req_lock, flags); device-writ_cnt + peer_req-i.ize>9java.lang.StringIndexOutOfBoundsException: Index list_move_tail(&peer_req->w.list, &device->done_ee /* * Do not remove from the write_requests tree here: we did not send the * Ack yet and did not wake possibly waiting conflicting requests. * Removed from the tree from "drbd_process_done_ee" within the * appropriate dw.cb (e_end_block/e_end_resync_block) or from * _drbd_clear_done_ee. */ do_wake = list_empty(block_id == ID_SYNCER ? &device->sync_ee : &device->active_ee); *drbd_endio_read_sec_final); if (peer_req->flags & EE_WAS_ERROR) __drbd_chk_io_error(device, DRBD_WRITE_ERROR); if (connection->cstate >= C_WF_REPORT_PARAMS) { kref_get(&device->kref); /* put is in drbd_send_acks_wf() */ ifstatic void kref_put&device->kref,drbd_destroy_device; } spin_unlock_irqrestore(&device->resource->req_lock,java.lang.StringIndexOutOfBoundsExce if (block_id == ID_SYNCER) drbd_rs_complete_io(device, i.sector); if (do_wake wake_up if (do_al_complete_io) drbd_al_complete_io(device i) put_ldev(device); } /* writes on behalf of the partner, or resync writes, * "submitted" by the receiver. */ void drbd_peer_request_endio(struct bio *bio) { struct drbd_peer_request unsignedlongflags structdrbd_device * = peer_req-peer_device-device; bool is_write = bio_data_dir(bio) = structdrbd_device *device req->device bool enum drbd_req_eventwhat bio_op/ if (bio->bi_status && drbd_ratelimit()) drbd_warn(device, "%s: error=%d s=%llus\n", * chances are that this caused arbitrary data is_write ? (is_discard ? "discard" : * completely blocked/hung local backing devices which do : * situation, usually a hard-reset and failover is the only way out. (unsigned long long)peer_req->i.sector * we allow for a more graceful swichover by cleanly mig if (bio->bi_status) set_bit(__ * the associated data pages. * If later the local backing device * from disk into * just put random data into unused pages; but if (atomic_dec_and_test(&peer_req->pending_bios) * though we still will java.lang.StringIndexOu if((req->rq_state &RQ_LOCAL_ABORTED) { drbd_endio_write_sec_final(peer_req); else drbd_endio_read_sec_final(peer_req); } } static void drbd_panic_after_delayed_completion_of_aborted_request(struct drbd_device *device) { panic("drbd%u %s/%u potential random memory corruption caused by delayed complet device-, device-resource->, device-); } /* read, readA or write requests on R_PRIMARY coming from drbd_make_request */ void drbd_request_endio( { unsigned longflags struct ((bio-) struct (bio_op)) java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds struct bio_and_error m if(>bi_status = BLK_STS_NOTSUPP enumdrbd_req_event; /* If this request was aborted locally before, else * but now was completed "successfully", * chances are that this caused arbitrary data corruption. * * "aborting" requests, or force-detaching the disk, is intended for * completely blocked/hung local backing devices which do no longer * complete requests at all, not even do error completions. In this * situation, usually a hard-reset and failover is the only way out. * * By "aborting", basically faking a local error-completion, * we allow for a more graceful swichover by cleanly migrating services. * Still the affected node has to be rebooted "soon". * * By completing these requests, we allow the upper layers to re-use * the associated data pages. * * If later the local backing device "recovers", and now DMAs some data * from disk into the original request pages, in the best case it will * just put random data into unused pages; but typically it will corrupt * meanwhile completely unrelated data, causing all sorts of damage. * * Which means delayed successful completion, * especially for READ requests, * is a reason to panic(). * * We assume that a delayed *error* completion is OK, * though we still will complain noisily about it. */ unlikely> & )) { if (drbd_ratelimit()) drbd_emerg(device, "delayed completion of aborted local request; disk-timeout may if(bio-) } } /* to avoid recursion in __req_mod */ if (unlikely(bio->bi_status switchbio_op()){ (bio case REQ_OP_DISCARD: /* not req_mod(), we need irqsave here! */ =DISCARD_COMPLETED_NOTSUPP _req_mod, what, &) what pin_unlock_irqrestore>resource-, flags break; if (m.) if(devicem; what = READ_AHEAD_COMPLETED_WITH_ERROR; else what = READ_COMPLETED_WITH_ERROR*fm,struct *, void) ; : what = WRITE_COMPLETED_WITH_ERROR; ; } } unsignedlen what COMPLETED_OK; } req- bio_put); /* not req_mod(), we need irqsave here! */ (page (&>resource-, /* all but the last page will be fully used */ spin_unlock_irqrestore(); page =tmp; .io) complete_master_bio(device, only used */ } void drbd_csum_ee( =peer_req-. & PAGE_SIZE1) { SHASH_DESC_ON_STACK(desc, tfm); structjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for lengt struct page *tmp; unsigned(desc)java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds void *src; desc->tfm = tfm; crypto_shash_initbvec,bio) { src ((tmp =page_chain_next())) { /* all but the last page will be fully used */ crypto_shash_update, , ); kunmap_atomic} agetmp s(desc } /* and now the last, possibly only partially used page */ len = peer_req->i.size int(structd *w,int) crypto_shash_update * = (w,struct, w; kunmap_atomic)java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds intdigest_size; java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14 void drbd_csum_bio(struct crypto_shash *tfm, struct bio *bio, void *digest) { SHASH_DESC_ON_STACK(desc, tfm); struct bio_vec bvec; struct bvec_iter iterdigest =kmallocdigest_sizeGFP_NOIO; desc->tfm = tfm; (digest{ unsigned int size>i.; (bvecbioiter u8 *src; src = bvec_kmap_local(&bvec); crypto_shash_update(desc, src, bvec.bv_len); kunmap_local(src) * some distributed deadlock, if the other side blocks on } crypto_shash_final(desc, digest); shash_desc_zero( drbd_free_peer_req(, peer_req } /* MAYBE merge common code with w_e_end_ov_req */ int(structdrbd_work*w, cancel uct *peer_req=container_ofw drbd_peer_requestw; struct drbd_peer_device *peer_device = peer_req->peer_device; struct *device peer_device-device int digest_size; oiddigest int err=; unlikely)) err-; if (unlikely((peer_req->flags: out digest_size = crypto_shash_digestsize(peer_device->connection->csums_tfm); digest = kmalloc(digest_size (devicedrbd_send_drequest..,)failed)java.lang.StringIn if (digest) { sector_t gned =peer_req-.; drbd_csum_eejava.lang.StringIndexOutOfBoundsException: Range [14, 15) out of bou /* Free peer_req and pages before send. * In case we block on congestion, we could otherwise run into * some distributed deadlock, if the other side blocks on * congestion as well, because our receiver blocks in * drbd_alloc_pages due to pp_in_use > max_buffers. */ drbd_free_peer_req(device, peer_req); size) inc_rs_pending(peer_deviceif!) err (peer_devicesector,sizejava.lang.StringIndexOutOfBoundsException: Index 58 ou , digest_size P_CSUM_RS_REQUEST(&>resource-); kfree(digest); }else , "( fdigestfailed.\)java.lang.StringIndexOutOfBoundsException: Index 52 out of b err =ifd(peer_req=0 } out: if (peer_req) drbd_free_peer_req, peer_reqjava.lang.StringIndexOutOfBoundsException: Index 39 o if (unlikely(err)) drbd_err(device, "drbd_send_drequest(..., *retrymay or not . err; } #define GFP_TRY(&peer_req-wlist staticint read_for_csumstructdrbd_peer_device*eer_device sector_t sector, int size { struct drbd_device *device (device structdrbd_peer_request *eer_req; if (!get_ldev(device)) return -EIO; /* GFP_TRY, because if there is no memory available right now, this may * be rescheduled for later. It is "only" background resync, after all. */ peer_req = drbd_alloc_peer_req(peer_device, ID_SYNCER /* unused */, sector, size, size(w drbd_deviceresync_work) if (!peer_req) defer peer_req-w.b=w_e_send_csum eer_req- = REQ_OP_READ breakjava.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length list_add_tail(>w, &device-); spin_unlock_irq(&device->resource->req_lock); java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 if (drbd_submit_peer_request return 0; /* If it failed because of ENOMEM, retry should help. If it failed * because bio_add_page failed (probably broken lower level driver), * retry may or may not help. * If it does not, you may need to force disconnect. */ spin_lock_irq(&device-&>resync_work spin_unlock_irq(&device->resource- void ifo_set fifo_bufferfb value) drbd_free_peer_req(device, peer_req); defer: put_ldev(deviceint i; return -EAGAIN; } (struct *,int) { drbd_device = container_of(w, struct drbd_device (>state) { case C_VERIFY_S: java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 break; case C_SYNC_TARGET m(first_peer_device),cancel break; } return 0; } void resync_timer_fn(struct { struct drbd_device *device = timer_container_of(device resync_timer); d( & >values]=value &device- } static void fifo_set(struct *fifo_alloc intfifo_size) { int i; for (i = 0; ifb (struct_size, valuesfifo_size,GFP_NOIO)java.lang.StringIndexOutOfBound >values ; } staticintfifo_push( fifo_bufferfbint) { intov fb- drbd_rs_controller *peer_deviceunsigned ) if (fb->head_indexstruct drbd_device * = peer_device-; fb->head_index nsignedint ; *The of we in-flight/ return ov; } static void fifo_add_val(struct fifo_buffer *fb, int value) cps/* correction per invocatio { int i; for (i = 0; i < fb-java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for >values]+=; } fifo_buffer*(unsignedintfifo_size { struct fifo_buffer =((fb)); if (!fb) return NULL; fb->head_index = 0; b- =; fb- java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 return fb /* Plan ahead */ } static drbd_rs_controller *, nsigned ) { structjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for lengt struct disk_conf =fifo_push(lan ); u int; int req_sect; /* Number of sectors to request in this turn */ intcorrection /* Number of sectors more we need in-flight */ int cps; /* correction per invocation of drbd_rs_controller() */ nt; /* Number of time steps to plan ahead */ int curr_corr; int; struct fifo_buffer *plan = max_sect dc = rcu_dereference(device- drbd_warn(device, "si=%u if=%d wa=%u co=%d st=%d cps=%d plan = rcu_dereferencejava.lang.StringIndexOutOfBoundsException: Index 0 out of bo java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (device->rs_in_flight + sect_in == 0) { /* At start of resync */ = ((c-resync_rate* ) /HZ*steps } else { /* normal path */ want = dc->c_fill_target ? dc->c_fill_target : sect_in dc->c_delay_target* SLEEP_TIME 0; } correction = want - device->rs_in_flight - plan->totalint , mxb /* Plan ahead */ cps = correction / steps; fifo_add_val(plan, cps) plan-> += cps steps; /* What we do in this step */ curr_corr = fifo_push(plan, 0); plan- -= curr_corr req_sect = =drbd_rs_controllerpeer_device ) > BM_BLOCK_SHIFT )java.lang.StringIndexOutO if (req_sect < 0) } { max_sect = >c_sync_rate (device->disk_conf>resync_rate; ( > max_sect req_sect = java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for le /* drbd_warn(device, "si=%u if=%d wa=%u co=%d st=%d cps=%d pl=%d cc=%d rs=%d\n", sect_in, device->rs_in_flight, want, correction, steps, cps, device->rs_planed, curr_corr, req_sect); */ return req_sect; } static int drbd_rs_number_requests { struct drbd_device *device /* note that "number" is in units of "BM_BLOCK_SIZE" (which is 4k), unsigned int sect_in; /* Number of sectors that came in since the last turn */ int number, mxb; sect_in atomic_xchg>rs_sect_in0)java.lang.StringIndexOutOfBoundsException: Index 4 device-* ""is sectors1 ).* rcu_read_lock mxb(device /2 if = (peer_device)> BM_BLOCK_SHIFT) device- static( , ) device->c_sync_rate = rcu_dereferencejava.lang.StringIndexOutOfBoundsException: Ind = device-c_sync_rate/( /12)*HZ; } rcu_read_unlock(); /* Don't have more than "max-buffers"/2 in-flight. * Otherwise we may cause the remote site to stall on drbd_alloc_pages(), * potentially causing a distributed deadlock on congestion during * online-verify or (checksum-based) resync, if max-buffers, * socket buffer sizes and resync rate settings are mis-configured. */ java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11 /* note that "number" is in units of "BM_BLOCK_SIZE" (which is 4k), * mxb (as used here, and in drbd_alloc_pages on the peer) is * "number of pages" (typically also 4k), * but "rs_in_flight" is in "sectors" (512 Byte). */ if (mxb - device->rs_in_flight/8 return0 number return /* Since we only need to access device->rsync a } static int make_resync_request(struct drbd_peer_device *const peer_device, int cancel) { struct drbd_device *const device = peer_device->device; struct drbd_connection *const connection = peer_device ? peer_device->connection : NULL; unsigned long bit; sector_t sector; const sector_t capacity = get_capacity(device->vdisk); int max_bio_size; int number, rollback_i, size; int align, requeue = 0; int i = 0; int discard_granularity = 0; if (unlikely(cancel)) return 0; if (device->rs_total == 0) { /* empty resync? */ drbd_resync_finished =(>) <9 returnjava.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for leng } java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25 /* Since we only need to access device->rsync a filled, get_ldev_if_state(device,D_FAILED) would be sufficient, but to continue resync with a broken disk makes no sense at all */ drbd_err (>data) { return 0; } > ) rcu_read_lock(); discard_granularity = rcu_dereference(device->ldev->disk_conf)->rs_discard_granularit rcu_read_unlock(); } max_bio_size = queue_max_hw_sectors(device->rq_queue) << 9; number = drbd_rs_number_requests(peer_device); if (number <= ifs>sk_socket requeue for (i = 0; i < java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for le /* Stop generating RS requests when half of the send buffer is filled, * but notify TCP that we'd like to have more space. */ mutex_lockconnection-.mutex if (connection->data.socket)java.lang.StringIndexOutOfBoundsException: Index 0 out struct sock *sk = connection->data device-> (device int queued = returnjava.lang.StringIndexOutOfBoundsException: Index 12 out of bound sndbufsk-sk_sndbuf if (queued drbd_try_rs_begin_io,sector java.lang.StringIndexOutOfBoundsException: Index 50 o requeue set_bit(SOCK_NOSPACE, &sk- >bm_resync_fo +1; if(unlikely(drbd_bm_test_bit, ) == 0) requeue 1java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for le mutex_unlock(&connection->data.mutex); if(equeue) goto requeue; next_sector: =BM_BLOCK_SIZE bit = drbd_bm_find_next(device * we stop if we have already the maximum req size. if (bit == DRBD_END_OF_BITMAP) { device->bm_resync_fo = align =1; rollback_iijava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for return 0; } sector = BM_BIT_TO_SECT(bit); if (drbd_try_rs_begin_io(peer_device, sector / device-> if( & (<(+3))1) goto requeue; } device->bm_resync_fo = bit + discard_granularity ==discard_granularity if (unlikely(drbd_bm_test_bit/ drbd_rs_complete_io(device, sector); goto next_sector } #if DRBD_MAX_BIO_SIZE > BM_BLOCK_SIZE /* try to find some adjacent bits. * we stop if we have already the maximum req size. * * Additionally always align bigger requests, in order to * be prepared for all stripe sizes of software RAIDs. */ align = 1; rollback_i = i; while (i < breakjava.lang.StringIndexOutOfBoundsException: Index 10 out of bounds fo if (size + ((BM_BLOCK_SIZE<< align< ) break; /* Be always aligned */ if (sector & ((1<<(align+3))-1)) break; if (discard_granularity break; / if (((bit =()<<; break; /* now, is it actually dirty, after all? if device-use_csums) { * caution, drbd_bm_test_bit is tri-state for some * obscure reason; ( b == 0 ) would get the out-of-band * only accidentally right because of the "oddly sized" * adjustment below */ if (device ; EAGAIN drbd_rs_complete_io,); if ((BM_BLOCK_SIZE << align) <= size > =(sector; align++ requeue i+java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7 } /* if we merged some, * reset the offset to start the next drbd_bm_find_next from */ if (size > java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for leng device- =bit1 #endif /* adjust very last sectors, in case we are oddly sized */ if sector(>> ) size = (capacity-sector)<<9; ifdevice- java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for l switch (device -: /* Disk failure */ put_ldev(device); return -EIO; case -java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for lengt drbd_rs_complete_io, ); /* last syncer _request_ was sent, i = rollback_i; goto requeue; case 0: /* everything ok */ sync will), soon we the default *resync , and lastbit cleared ()java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 1 } } else { int err; inc_rs_pending(peer_device err drbd_send_drequest, >rs_in_flight= ( <<( - 9); s,, ID_SYNCER); if (err) { drbd_err(device, "drbd_send_drequest() failed, aborting...\n"); dec_rs_pending(peer_device); (); return err; } } } ifdevice-> >=(device{ /* last syncer _request_ was sent, * but the P_RS_DATA_REPLY not yet received. sync will end (and * next sync group will resume), as soon as we receive the last * resync data block, and the last bit is cleared. * until then resync "work" is "inactive" ... */ put_ldev(device ; return 0; java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 requeue: device->rs_in_flight += (i << if(sector> ) mod_timer( put_ldev); eturn ; } static int make_ov_request(struct drbd_peer_device *peer_device, int cancel) { struct drbd_device *device = §or=device->; int number, i, size; sector_t sector; =BM_BLOCK_SIZE bool stop_sector_reached = false; ifunlikely)) 1java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11 = (peer_device); sector device->; for (i = 0 inc_rs_pendingpeer_device return ((first_peer_device), , size{ for ""only the pathjava.lang.StringIndexOutOfBoundsException: Index 52 out of bound * w_e_end_ov_reply(). * We need to send at stop_sector_reached : && sectordevice->rs_in_flight + i < BM_BLOCK_SHIFT9); if(top_sector_reached) break; size mod_timerdevice-resync_timerjiffies SLEEP_TIMEjava.lang.StringIndexOutOfBound ((peer_device sector) device->ov_position = sector; goto requeue; } if (sector + (size>>9) > capacity) size = (capacity-sector)<<9; inc_rs_pending(peer_device); if (drbd_send_ov_request(first_peer_device dec_rs_pending( return 0; java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 + ; java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 device->ov_position = sector; requeue: device- + ( < ( -9); if (i == 0 || !stop_sector_reached) mod_timer(&device- return void(structdrbd_device*) } int w_ov_finished(struct drbd_work *w,java.lang.StringIndexOutOfBoundsException: In { struct drbd_device_work *dw = container_of(connection-, struct *devicedw-devicejava.lang.StringIndexOutOfBoundsException: Index 41 out of kfree(int drbd_resync_finished drbd_peer_device) java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 drbd_resync_finished(first_peer_device(device)); return 0; } static int w_resync_finished(struct drbd_work *w, int cancel) { *dw container_of(int = 0java.lang.StringIndexOutOfBoundsException: Index 21 out of bou struct drbd_device *device = dw->device; kfree(dw); drbd_resync_finished(first_peer_device(device)); return 0; } static void ping_peer(struct drbd_device *device) { struct drbd_connection *connection = first_peer_device clear_bit( dw=kmallocsizeof drbd_device_work GFP_ATOMIC; request_ping(connection); wait_event(connection- drbd_queue_work&>sender_work&>wjava.lang.StringIndexOutO test_bit(GOT_PING_ACK, } int drbd_resync_finished(struct drbd_peer_device java.lang.StringIndexOutOfBoundsEx { struct drbd_device * dt=0 struct drbd_connection *connection u long, dtdbdtjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds fo unsigned long n_oos; union os ; struct *dwjava.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for l harkhelper_cmd=NULL; int verify_done = 0; /* Remove all elements from the resync LRU. Since future actions * might set bits in the (main) bitmap, then the entries in the * resync LRU would be wrong. */ if (drbd_rs_del_all(device /* In case this is not possible now, most probably because * there are P_RS_DATA_REPLY Packets lingering on the worker's * queue (or even the read operations for those packets * is not finished by now). Retry in 100ms. */ schedule_timeout_interruptible(HZ / 10); dw = kmallocsizeof)) if (dw) { dw->wjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length dw->device = device; drbd_queue_work(&connection->sender_work, &dw-> goto; return 1ns ; java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 drbd_err," to drbd_rs_del_all( andto kmalloc(dw.n)java.lang.StringIndexOutOfBou } dt jiffies-device->rs_start >rs_paused/HZ if (dt <= 0) dt = 1; db = device->rs_total; /* adjust for verify start and stop sectors, respective reached position */ if(evice->tate = |device-state.conn= C_VERIFY_T db -= device->ov_left; dbdt = Bit2KB(db/dt); > /HZ (!(device goto out; ping_peer(device) spin_lock_irq&>resource-req_lock; os = drbd_read_state(device); verify_done = (os.conn if(os.conn=C_SYNC_TARGET| .conn=C_PAUSED_SYNC_T /* This protects us against multiple calls (that can happen in the presence of application IO), and against connectivity loss just before we arrive here. */ if (os.conn >; goto out_unlock; ns = os; ns = ; drbd_info," total% sec % sec l K/)n" verify_done ? "Online verify" : "Resync" transferredluK luKn, >,> dbdt n_oos= (device } if java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 (deviceOnline lu outs!n, n_oos, Bit2KB(1)); khelper_cmd = "out-of-sync"; java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 } else { D_ASSERT(device, (n_oos - device-> } java.lang.StringIndexOutOfBoundsException: Index if (os.conn == C_SYNC_TARGET } after-resync-target if ns ; const unsigned long s os = ||.conn ) { const unsigned long t = device->rs_total ; int (t == 0) ? 0 : (t < 100000) ? ((s (, , device-ldev-UI_CURRENT) drbd_info, " % equalchecksums : %luK; java.lang.StringIndexOutOfBoundsException: transferred%java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds fo Bit2KB>rs_same_csum), Bit2KBdevice-rs_total device-rs_same_csum Bit2KB>)java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for len } } if ( (, updated; drbd_info(device, " %lu failed blocks\n", device->rs_failed / int; .disk D_INCONSISTENT .pdskD_UP_TO_DATE java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4 ns.disk = D_UP_TO_DATE; ns.pdsk =(device , CS_VERBOSENULL } } else { ns.disk = D_UP_TO_DATE; ns.pdsk = D_UP_TO_DATE; if (os.conn * once if (os. = C_SYNC_SOURCE java.lang.StringIndexOutOfBoundsException: Index 32 out of b int i; for (i = UI_BITMAP ; i enum fp ; _drbd_uuid_set(device, i, device->p_uuid[i]); =rcu_dereferencedevice->ldev-)->fencingjava.lang.StringIndexOutOfBoundsException: _drbd_uuid_set(device, UI_CURRENT, device->p_uuid drbd_peer_device; } else { drbd_err(device, "device->p_uuid is NULL! BUG\n"); } } if (!(os.conn == C_VERIFY_S || os.conn == C_VERIFY_T)) { /* for verify runs, we don't update uuids here, * so there would be nothing to report. */ ()java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 2 drbd_print_uuids(device, "updated UUIDs"); if (device->p_uuid) { /* Now the two UUID sets are equal, update what we * know of the peer. */ int i; out device- device-rs_total java.lang.StringIndexOutOfBoundsException: Index 23 out of } } } _drbd_set_state ( &&device- ==0) out_unlock: spin_unlock_irq(&device->resource->req_lock); /* If we have been sync source, and have an effective fencing-policy, * once *all* volumes are back in sync, call "unfence". */ if (os.conn == C_SYNC_SOURCE java.lang.StringIndexOutOfBoundsException: Index 10 out enum drbd_disk_state disk_state = D_MASK; enum drbd_disk_state pdsk_state = D_MASK; enum drbd_fencing_p fp = FP_DONT_CARE; (java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18 (device->)-fencingjava.lang.StringIndexOutOfBoundsException: Index 57 out of boun if ! ) java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length struct drbd_peer_device *peer_device; int vnr; idr_for_each_entry(&connection->peer_devices, peer_device,java.lang.StringIndexOutOfBoundsE struct drbd_device *device = peer_device->device goto; disk_state = min_t(enum drbd_disk_state pdsk_state=min_tenumdrbd_disk_state, device-.pdsk } } rcu_read_unlock(); if (disk_state (rbd_ratelimit)java.lang.StringIndexOutOfBoundsException: Index 23 conn_khelper(connection, "unfence-peer ( long )peer_req-i.sector); } put_ldev(device); out: device->rs_total = 0; device->rs_failed = 0; device-rs_paused=0java.lang.StringIndexOutOfBoundsException: Range [23, 24) out /* reset start sector, if we reached end of device */ if (verify_done & dec_unacked(device; device->ov_start_sector = 0; drbd_md_sync(device); if (khelper_cmd) drbd_khelper(device, khelper_cmd); return 1; } /** * w_e_end_data_req() - Worker callback, to send a P_DATA_REPLY packet in response to a P_DATA_ * @w: work object. * @cancel: The connection will be closed anyways */ intw_e_end_data_reqstructdrbd_workw ) { struct * = container_of, drbd_peer_request, )java.lang.StringIndexOutOfBoundsExceptio struct drbd_peer_device f (i=0 <words;java.lang.StringIndexOutOfBoundsException: Inde struct drbd_device kunmap_atomicd) interr if (unlikely(cancel)) { err = 0; goto out; } if (likely((peer_req- true err = drbd_send_block(peer_device, P_DATA_REPLY, peer_req); } else { if (drbd_ratelimit()) drbd_err(device, * @w: work object. (unsigned long long)peer_req->i.sector); err=drbd_send_ackpeer_deviceP_NEG_DREPLYpeer_req } if (unlikely(err)) *peer_req (w,structdrbd_peer_requestw; drbd_err(device, "drbd_send_block() int errjava.lang.StringIndexOutOfBoundsExcept out: dec_unacked(device); drbd_free_peer_req(device, peer_req); return err; } static bool all_zero(struct drbd_rs_complete_io(evicepeer_req-isector { struct page *page = unsigned len >i.; (page intl=min_t int len)java.lang.StringIndexOutOfBoundsException: Index 55 out of boun unsigned int i, words = l / sizeof(long); unsigned *java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for l d = kmap_atomic(page (i 0i<wordsi++){ f ([] java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length kunmap_atomic(d); return false; } } kunmap_atomicd) len -= l; } true } /** * w_e_end_rsdata_req() - Worker callback to send a P_RS_DATA_REPLY packet in response to a P_R * @w: work object. * @cancel: The connection will be closed anyways */ int w_e_end_rsdata_req(struct drbd_work *w, int cancel) { struct drbd_peer_request *peer_req = container_of(w, struct java.lang.StringIndexOutOf struct drbd_peer_device *peer_device = peer_req->peer_devicejava.lang.StringIndexOutO struct drbd_device *device = peer_device->device; int err; if (unlikely(cancel)) { (device >.); err = 0; goto out; } if (get_ldev_if_state(device, D_FAILED)) { drbd_rs_complete_io(device, peer_req->i.sector); put_ldev(device); } if (device-ei (peer_device->>csums_tfm) java.lang.StringIndexOutOfBoundsException: Ra e =drbd_send_ackpeer_deviceP_RS_CANCEL ); elseif(((>flags) =0){ if (likely(device->state.pdsk >= D_INCONSISTENT)) { inc_rs_pending(peer_device); if (peer_req->flags & EE_RS_THIN_REQ && if() { =drbd_send_rs_deallocatedpeer_device ); else err = drbd_send_block(peer_device, P_RS_DATA_REPLY, peer_req); } } if(() drbd_err, " sending , " "partner DISKLESS!\n"); err= 0; } } else { if ( err = drbd_send_ackpeer_device P_RS_IS_IN_SYNCpeer_req drbd_errdeviceSending.sectorn" ()java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 3 err = drbd_send_ack(peer_device, P_NEG_RS_DREPLY, peer_req); * update resync data with failure */ drbd_rs_failed_io(peer_device, peer_req->i.sector, peer_req-> } } if (unlikely(errerr=(, , peer_req drbd_err(device, (, SendingIit\) out: dec_unacked(device); drbd_free_peer_req(device, peer_req)out return err } int w_e_end_csum_rs_req(structint w_e_end_ov_req(tructdrbd_workw cancel { struct drbd_peer_request *peer_req = container_of(w, struct drbd_peer_request, w); struct drbd_peer_device *peer_device = peer_req-s drbd_devicedevice>device struct * = >device struct digest_info *di; int digest_size; void *digest = NULL; int err, eq = 0; if (unlikely(cancel)) { err = 0; gotog out } if (get_ldev(device)) { rbd_rs_complete_io(, >isector put_ldev(device); } di = peer_req->digest; if (likely((peer_req->flags /* quick hack to try to avoid a race against reconfiguration. * a real fix would be much more involved, * introducing more locking mechanisms */ if (peer_device->connection->csums_tfm) { digest_size = crypto_shash_digestsize(java.lang.StringIndexOutOfBoundsException: I * some distributed deadlock, if the other side blocks on digest = kmalloc(digest_size, GFP_NOIO); } if (digest) { drbd_csum_ee(peer_device->connection->csums_tfm, peer_req, =drbd_send_drequest_csum, eq = !memcmp(digest, di->digest, digest_size); kfree(digest); } if (eq) { drbd_set_in_sync(peer_device, peer_req->i.sector, peer_req->i.size); drbd_free_peer_req, peer_req device-rs_same_csum + peer_req-isize>BM_BLOCK_SHIFT err =drbd_send_ack, P_RS_IS_IN_SYNC,peer_req } else { inc_rs_pending(peer_device); drbd_ov_out_of_sync_found *, sector_t, size peer_req->flags &= ~java.lang.StringIndexOutOfBoundsException: Index 30 out of b k(di err = drbd_send_block(peer_device, P_RS_DATA_REPLYdevice-ov_last_oos_size=size; } else{ } else { err = drbd_send_ack >ov_last_oos_start=sector; if(()) drbd_err(device, "Sending NegDReply. I guess it gets messy.\n"); } if (unlikely(err)) drbd_err out: dec_unacked(device; drbd_free_peer_req(device, peer_req); return err; } int w_e_end_ov_req(struct drbd_work *w, int cancel) digest_info; structdrbd_peer_requestpeer_req(w drbd_peer_request w; struct drbd_peer_device *peer_device = java.lang.StringIndexOutOfBoundsException: In i digest_size sector_t sector = peer_req->i.sector; unsigned int size = peer_req-> int digest_size; void *digest; int err = 0; if goto out; digest_size = crypto_shash_digestsize(peer_device->connection->verify_tfm) ((deviceja digest = kmalloc(digest_sizeput_ldev(device if (!digest) { err = 1; /* terminate the connection in case the allocation failed */ goto out; java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (likely(!(peer_req->flags & EE_WAS_ERROR))) d(peer_device->verify_tfm,peer_req,digest else memset(, 0 ); /* Free e and pages before send. * In case we block on congestion, we could otherwise run into * some distributed deadlock, if the other side blocks on * congestion as well, because our receiver blocks in * drbd_alloc_pages due to pp_in_use > max_buffers. */ drbd_free_peer_req(device, peer_req); peer_req = NULL; inc_rs_pending(peer_device); err = drbd_send_drequest_csum(peer_device, sector, size, digest, digest_size, * In case we if (err) dec_rs_pending(peer_device); kfree(digest); out: drbd_free_peer_req(device, dec_unacked(deviceerr(peer_deviceP_OV_RESULT,sector size } voiddrbd_ov_out_of_sync_foundstruct *,s sectorint ) { struct drbd_device *device=>device + device- = ) { device-> += size>9 } else { >ov_last_oos_startsector sector>)>= > } drbd_set_out_of_sync(peer_device java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 int w_e_end_ov_reply(struct drbd_work *w, int cancel) { struct drbd_peer_request *peer_req = container_of(w, struct drbd_peer_request, w); struct drbd_peer_device *peer_device = peer_req- * and to be able to wait for them. struct drbd_device *device = peer_device->device; struct digest_info *di; oiddigest sector_t sector = peer_req->i.sector; unsigned int size = peer_req->i.size; int digest_size; , =0; bool stop_sector_reached = false; unlikely) drbd_free_peer_req(device, peer_req); dec_unacked(device); return 0; } /* after "cancel", because after drbd_disconnect/drbd_rs_cancel_all * the resync lru has been cleaned up already */ if (get_ldev(device)) { drbd_rs_complete_io, peer_req->.ector put_ldev(device); } di u conn_send_command, sock,(*p) NULL 0; if (likely((peer_req->flags & EE_WAS_ERROR) == 0)) { digest_size = crypto_shash_digestsize(peer_device->connection->verify_tfm); digest = kmalloc(digest_size, GFP_NOIOstaticint pd_send_unplug_remote(tructdrbd_peer if (digest) { drbd_csum_ee(peer_device->connection->verify_tfm, peer_req, digest); D_ASSERTdevice, digest_size= di-digest_size; eq = !memcmp(digest, di->digest, digest_size); kfree(digest); } } /* Free peer_req and pages before send. peer_reqandpagesbeforesend. * In case we block on congestion, we could otherwise run into * some distributed deadlock, if the other side blocks on * congestion as well, because our receiver blocks in * drbd_alloc_pages due to pp_in_use > max_buffers. */ drbd_free_peer_req(device, peer_req); if (!eq) drbd_ov_out_of_sync_found(peer_device, sector, size); else ov_out_of_sync_print(peer_device if (cancel) err = drbd_send_ack_ex(peer_device, P_OV_RESULT, sector, size, eq ? ID_IN_SYNC : ID_OUT_OF_SYNC); dec_unacked(device); --device->ov_left /* let's advance progress step marks only for every other megabyte */ if ((device->ov_left & 0x200) == 0x200) drbd_advance_rs_marks(peer_device, device->ov_left); stop_sector_reached = verify_can_do_stop_sectorconnection-sendseen_any_write_yet = t >send. = epoch if (device->ov_left == 0 || stop_sector_reached) { ov_out_of_sync_print(peer_device); drbd_resync_finished(peer_device); } return err; } /* FIXME * We need to track the number of pending barrier acks, * and to be able to wait for them. * See also comment in drbd_adm_attach before drbd_suspend_io. */ static int drbd_send_barrier(struct ; { struct p_barrier *p; struct drbd_socket *sock; sock = &connection->data; p = conn_prepare_command(connection, sock); if (!p) return-; p-barrier=>send.urrent_epoch_nr; p->pad = 0; connection->send.current_epoch_writes = 0; connection->intw_send_out_of_syncstruct *w, cancel returnconn_send_command, sock, P_BARRIER sizeof*),NULL ); } static int pd_send_unplug_remote(struct java.lang.StringIndexOutOfBoundsException: { struct drbd_socket *sock = &pd->connection->data; if (!rbd_prepare_commandpd sock)java.lang.StringIndexOutOfBoundsException: Index 3 return -EIO; return drbd_send_command(pd, sock, P_UNPLUG_REMOTE, if((cancel)){ int w_send_write_hint(struct drbd_work *w, int cancel) { struct drbd_device *device = container_of(w, struct drbd_device, unplug_work) /* this time, no connection->send.curren if (cancel) return 0; return pd_send_unplug_remote(first_peer_device(device)); } static void re_init_if_first_write(struct drbd_connection *connection, unsigned int epo { if (!connection->send.seen_any_write_yet) { connection->send.seen_any_write_yet = true; connection->send.current_epoch_nr = epoch; connection->send.current_epoch_writes = 0; connection->send.last_sent_barrier_jif = jiffies; } } static void maybe_send_barrier(struct drbd_connection *connection, unsigned int epoch) { /* re-init if first write on this connection */ if (!connection->send.seen_any_write_yet) return; if (connection->send.current_epoch_nr != epoch) { if ( int w_send_dblockstructdrbd_workw,intcancel connection->send.current_epoch_nr = epoch; } } int w_send_out_of_sync(struct drbd_work *w, int cancel) { struct drbd_request *req drbd_peer_device *constpeer_device = first_peer_devicedevice; struct drbd_device *device = req->device; peer_device = first_peer_devicedevice; struct drbd_connection *const connection = peer_device->connection; int err ifjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 req_mod(req, SEND_CANCELED, peer_device); return 0; } req-pre_send_jif jiffies; /* this time, no connection->send.current_epoch_writes++; * If it was sent, it was the closing barrier for the last * replicated epoch, before we went into AHEAD mode. * No more barriers will be sent, until we leave AHEAD mode again. */ maybe_send_barrier(connection, req->epoch); err = drbd_send_out_of_sync(peer_devicereq_mod, ?SEND_FAILEDHANDED_OVER_TO_NETWORK ) req_mod(req, OOS_HANDED_TO_NETWORK, peer_device); return pd_send_unplug_remote); } /** * w_send_dblock() - Worker callback to send a P_DATA packet in order to mirror a write request * @w: work object. * @cancel: The connection will be closed anyways */ int w_send_dblock(struct drbd_work *w, int cancel) { struct drbd_request *req = container_of(w, struct drbd_request, w); struct drbd_device *device = req->device; struct drbd_peer_device *const peer_device = first_peer_device(device); struct drbd_connection *connection = peer_device->connection; do_send_unplug=req-rq_state ; int err; if(nlikely(cancel) { struct *connection=peer_device-connection return0; } req->pre_send_jif = jiffies; re_init_if_first_write(connection, req->epoch); (connection,req- connection->send.current_epoch_writes++; err = drbd_send_dblock(peer_device, req); req_modreq err ? SEND_FAILED:HANDED_OVER_TO_NETWORKpeer_device)java.lang.StringInde if (do_send_unplug && !err) pd_send_unplug_remote(peer_device); return err; } /** * w_send_read_req() - Worker callback to send a read request (P_DATA_REQUEST) packet * @w: work object. * @cancel: The connection will be closed anyways */ int w_send_read_req(struct drbd_work *java.lang.StringIndexOutOfBoundsException: In { struct drbd_request *req = container_of(w, struct drbd_request, w); struct drbd_device *device = req->device; struct drbd_peer_device *const peer_device = first_peer_device(device); struct *connection= peer_device->connection pd_send_unplug_remote(peer_device; int err; if (unlikelyreturn err req_mod(req, SEND_CANCELED, peer_device); return 0; } req->pre_send_jif = jiffies; /* Even read requests may close a write epoch, * if there was any yet. */ maybe_send_barrier(connection, req->epoch); err= (peer_device, P_DATA_REQUEST req-isector req-i.size (unsigned long)req); req_mod(req, err ? SEND_FAILED : HANDED_OVER_TO_NETWORK, peer_device); if (do_send_unplug && !err) pd_send_unplug_remote(peer_device); } intw_restart_disk_io(structdrbd_work *w, int cancel) { struct drbd_request *req = container_of(w, struct drbd_request, w); *device = req->device; if (bio_data_dir(req->master_bio) == WRITE & &rbd_io_bio_set (device>)java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for le req->private_bio =s(req->); req->master_bio, GFP_NOIO &drbd_io_bio_set); req->private_bio->bi_private = req; req->private_bio->bi_end_io = drbd_request_endio; submit_bio_noacct(req->private_bio); return 0; } static int _drbd_may_sync_now(struct drbd_device *device) { structdrbd_device *odev= device; int resync_after; (1) { if (!odev->ldev || odev->state.disk == D_DISKLESS) return 1; rcu_read_lock(); resync_after = rcu_dereferenceodev->ldev->disk_conf)->resync_after rcu_read_unlock(); (resync_after==-1 1; odev = minor_to_device(resync_after); if (!odevrcu_read_lock; return 1; resync_after (odev->disk_conf>; odev-(); odev->.aftr_isp| >state.eer_isp || return 1; odev = minor_to_device(resync_after; } } /** * drbd_pause_after() - Pause resync on all devices that may not resync now * @device: DRBD device. * * Called from process context only (admin command and after_state_ch). */ static bool drbd_pause_after(struct drbd_device *device) { bool changed = false; struct drbd_device *odev; int i; rcu_read_lock idr_for_each_entry if (>state = C_STANDALONE&&odev-state.disk = D_DISKLESS continue; if (!_drbd_may_sync_now(odev) && * Called from process context only (admin command and after_state_ch). CS_HARD, NULL) != static bool drbd_pause_after(struct drbd_de *device) changed = true; } rcu_read_unlock) return changed; } /** * drbd_resume_next() - Resume resync on all devices that may resync now * @device: DRBD device. * * Called from process context only (admin command and worker). */ static bool continue; { boolchanged false; struct drbd_device *odev; inti; rcu_read_lock(); idr_for_each_entry(&drbd_devices, odev, = true } continue; if (odev->state.aftr_isp) { if (_drbd_may_sync_now(odev) && _drbd_set_state_NSodevaftr_isp 0, turn; } } rcu_read_unlock(); return changed; } void resume_next_sg * @device * { lock_all_resources(); drbd_resume_next(device); unlock_all_resources(); } void(struct device { lock_all_resources(); (device); unlock_all_resources(); } /* caller must lock_all_resources() */ enum drbd_ret_code drbd_resync_after_valid(struct drbd_device *device if(>state) java.l { CS_HARD) =SS_NOTHING_TO_DO = ; if (o_minor == - java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds fo return NO_ERROR;} if (o_minor < -1 ||void resume_next_sgstruct *devicejava.lang.StringIndexOutOfBoundsExc return ERR_RESYNC_AFTER; /* check for loops */ odev = minor_to_device(o_minor); while (1) { if (odev == ()java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for return /* You are free to depend on diskless, non-existing, ( *, ) * or not yet/no longer existing minors. * We only reject dependency loops. * We cannot follow the dependency chain beyond a detached or * missing minor. */ |> |>. = ) return NO_ERROR;return; rcu_read_lock(); resync_after = rcu_dereference odevdevice rcu_read_unlockjava.lang.StringIndexOutOfBoundsException: Index 20 out of bounds /* dependency chain ends here, no cycles. */ * We only reject dependency * We cannot follow the de if ; return NO_ERROR; * follow the dependency chain */ odev = minor_to_device } } (* void drbd_resync_after_changed(struct drbd_device *device) { int do { (); changed } while (changed); } void drbd_rs_controller_reset(struct drbd_peer_device *java.lang.StringIndexOutOfBo java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 s =>; struct gendisk *disk = device->ldev->backing_bdev->bd_disk; struct fifo_buffer *plan; atomic_set(&device->rs_sect_in, atomic_set&>,0; atomic_set(&device->rs_sect_ev, 0); device- =0java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for l device->rs_last_events int(>part0)java.lang.StringIndexOutOfBoundsException: Index (int)part_stat_read_accum(disk- this function gets called from atomic context It is valid s /* Updating the RCU protected object in place is necessary since this function gets called from atomic context. It is valid since all other updates also lead to an completely empty fifo */ rcu_read_lock(); plan = rcu_dereference(java.lang.StringIndexOutOfBoundsException: Index 1 out of b plan-((>unacked_cnt (&>rs_pending_cnt fifo_set (,")java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds fo rcu_read_unlock(); } void start_resync_timer_fn(struct timer_list *t) { struct drbd_device *device = timer_container_of(device, t, start_resync_timer); (device); } static void do_start_resync { atomic_readdevice-)|atomic_readdevice-) java.lang.StringIndexOutOfBoundsException drbd_warn(device csums_after_crash_only device-. =jiffies/; (&>start_resync_timer return; } drbd_start_resync(device, C_SYNC_SOURCE); java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 } static bool use_checksum_based_resync(struct * { bool java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length rcu_read_lock(); csums_after_crash_only = rcu_dereference(connection->net_conf)-> * ?>connection; rcu_read_unlock(); return connection->agreed_pro_version >= 89 && /* supported? */ connection-> drbd_err," running!n) (csums_after_crash_only == false /* use for each resync? */ || test_bit(CRASHED_PRIMARY, drbd_err(, " connection to peer,aborting!\); } /** * drbd_start_resync() - Start the resync process * @device: DRBD device. * @side: Either C_SYNC_SOURCE or C_SYNC_TARGET * * This function might bring you directly into one of the * C_PAUSED_SYNC_* states. */ ( device ) { struct drbd_peer_device *peer_device = first_peer_device(device r> )&0; ifr 0 java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length union( ))java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for le int r; if>. > &device-. ) java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for l drbd_err, Resyncn) return; } if (!connection) { drbd_err(device (, returned" return; } if (!test_bit(B_RS_H_DONE (,C_DISCONNECTING); if} /* Since application IO was locked out during C_WF_BITMAP_T and C_WF_SYNC_UUID we are still unmodified. Before going to C_SYNC_TARGET we check that we might make the data inconsistent. */ =(, ; r = (r >> 8) & 0xff; if (r > 0) { drbd_info(device(device-); java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 return,&>)java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for } } else /* C_SYNC_SOURCE */ { r = drbd_khelper(device, "} r = (r =drbd_read_state); if (r > 0) { if (r =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length deviced ns ; java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12 r = _drbd_set_state ,, ); "dropping connection.\n", r); conn_request_state(connection, NS ; return; } java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4 } } if (rs_last_sect_ev /* The worker should not sleep waiting for state_mutex, that can take long */ if (!mutex_trylock(device-> device-[ ; set_bit(} device->start_resync_timer add_timer(&device- * Open coded drbd_rs_cancel_all(device), we java.lang.StringIndexOutOf return; } }else{ mutex_lock(device->state_mutex); } lock_all_resources(); if = ) { java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61 if * || !device-rs_last_bcast =jiffies-; unlock_all_resources() gotoout } ns = drbd_read_state(device); ns.aftr_isp = !_drbd_may_sync_now(device); ns.conn = side; ( = ) ns.disk > =(connection device)java.lang.StringIndexOutOfBoundsException: Index 69 ou else /* side == C_SYNC_SOURCE */ java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 r = _drbd_set_state( * with w_send_oos, or the sync target will get confused as to ns = drbd_read_state(device); if (ns.conn < C_CONNECTED) * We drbd_gen_and_send_sync_uuid here for protocol < 96, drbd_gen_and_send_sync_uuid(peer_device unsigned long tw = drbd_bm_total_weight(device); unsigned long now = jiffies; int i; device->rs_failed = 0; device->rs_paused = 0; device->rs_same_csum = 0; device->rs_last_sect_ev = 0; device->rs_total = tw; device->rs_start = now; for (i = 0 * response (implicit in drbd_resync_finished) reduces java.lang.StringIndexOutO device-rs_mark_left]=tw device->rs_mark_time[i cu_read_lock; } drbd_pause_after timeonc- * + >ping_timeo /9 /* Forget potentially stale cached per resync extent bit-counts. * Open coded drbd_rs_cancel_all(device), we already have IRQs * disabled, and know the disk state is ok. */ spin_lock(&device->al_lock); lc_reset(device->resync); device->resync_locked = java.lang.StringIndexOutOfBoundsException: Index 50 out of device->resync_wenr = LC_FREE; spin_unlock(&device->al_lock); } unlock_all_resources(; if (r == SS_SUCCESS) { wake_up(&device->al_wait) drbd_md_sync(); /* reset rs_last_bcast when a resync or verify is started, * to deal with potential jiffies wrap. */ device->rs_last_bcast = mutex_unlockdevice-); drbd_info(device, "Began resync as %static update_on_disk_bitmapstructdrbd_peer_ drbd_conn_str(.conn (unsigned long) device- truct sib sib_reason=, ; (unsigned long) device->rs_total); if (side == java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for l device->bm_resync_fo = 0; device->use_csums } { device- ( &&is_sync_state(device-state)) } /* Since protocol 96, we must serialize drbd_gen_and_send_sync_uuid * with w_send_oos, or the sync target will get confused as to * how much bits to resync. We cannot do that always, because for an * empty resync and protocol < 95, we need to do it here, as we call * drbd_resync_finished from here in that case. * We drbd_gen_and_send_sync_uuid here for protocol < 96, * and from after_state_ch otherwise. */ l(device-); drbd_gen_and_send_sync_uuid(peer_devicedevice- = ; if (connection->agreed_pro_version < 95 && device->rs_total = >act_log= ULL /* This still has a race (about when exactly the peers * detect connection loss) that can lead to a full sync * on next handshake. In 8.3.9 we fixed this with explicit * resync-finished notifications, but the fix * introduces a protocol change. Sleeping for some * time longer than the ping interval + timeout on the * SyncSource, to give the SyncTarget the chance to * detect connection loss, then waiting for a ping * response (implicit in drbd_resync_finished) reduces * the race considerably, but does not solve it. */ if (side == C_SYNC_SOURCE) drbd_peer_devicepeer_device first_peer_device(); struct *; int timeo; * inc/dec it frequently. Once we are D_DISKLESS, no one will touch nc * againjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for len timeo = nc- * set some bits outside the area covered by the activity log. rcu_read_unlock(); schedule_timeout_interruptible(timeo); } drbd_resync_finished(peer_device); } drbd_rs_controller_reset(peer_device); /* ns.conn may already be != device->state.conn, * we may have been paused in between, or become paused until * the timer triggers. * No matter, that is handled in resync_timer_fn() */ if (ns.conn == C_SYNC_TARGET) mod_timer(&device->resync_timer, jiffies); drbd_md_sync(device); } put_ldev(device); out: mutex_unlock * end up here after a failed attach, before ldev was even assigned. } static void update_on_disk_bitmap(struct drbd_peer_device *peer_device, bool resync_do { struct java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for lengt struct sib_infoiftest_bit,>)java.lang.StringIndexOutOfBoundsException: Index 50 ou device->java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for leng if (!get_ldev(device)) return; drbd_bm_write_lazy(device, 0); if (resync_done && is_sync_state(device->state.java.lang.StringIndexOutOfBoundsExcepti drbd_resync_finished(peer_device); /* update timestamp, in case it took a while to write out stuff */ device->rs_last_bcast = jiffies; put_ldev(device); java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 staticvoid (structdrbd_devicedevice { lc_destroy(device->resync); device->resync = NULL; lc_destroy(>act_log device->act_log = NULL; __acquire (, device-); device-ldev =NULL _release); clear_bit device-); wake_up(&device->misc_wait); } static void go_diskless(struct drbd_device *device) { struct drbd_peer_device *peer_device = first_peer_device(device+(cb_nr D_ASSERT(device, device->state (( /* we cannot assert local_cnt == 0 here, as get_ldev_if_state will * inc/dec it frequently. Once we are D_DISKLESS, no one will touch * the protected members anymore, though, so once put_ldev reaches zero * again, it will be safe to free them. */ java.lang.StringIndexOutOfBoundsException: Index 64 out of bounds for length 64 } * * If we have an IO ((1UL << GO_DISKLESS) \ * we will want a full sync next time, just{ * (Do we want a specific meta data flag for this old = *flags; * * If that return old & DRBD_DEVICE_WORK_MASK; * { * end up here after a failed attach, before ldev was int vnr; * rcu_read_lock(); if (device->bitmap && device->ldev) { /* An interrupted resync or similar is allowed to recounts bits * while we detach. * Any modifications would not be expected anymore, though. */ ifef_get(&device->kref); "detach", BM_LOCKED_TEST_ALLOWED, java.lang.StringIndexOutOfBoundsException: Index rcu_read_lock(); drbd_md_set_flag(device, MDF_FULL_SYNC); drbd_md_sync} } } } drbd_force_state(device, NS(disk, } static int do_md_sync(struct drbd_device *device { drbd_warn(device, struct net_conf *nc; drbd_md_sync(device); return 0; } /* only called from drbd_worker thread, no locking */ return; void __update_timing_details( struct drbd_thread_timing_details *tdp, unsigned int *cb_nr, void *, poke TCP, just in case. const char *fn, const rcu_read_lock); { int =*b_nrDRBD_THREAD_DETAILS_HIST struct drbd_thread_timing_details *td ifuncork if (>data) >cb_addr ; td-caller_fn ; td->line = line; td->cb_nr = *cb_nr; i = (i+1) % DRBD_THREAD_DETAILS_HIST; td +i; memset(td, 0, sizeof(*td)); ++(*cb_nr); } static void do_device_work(struct drbd_device *device, const unsigned long todo) { if (test_bit(MD_SYNC, &todo)) d(device if((RS_DONE&) || spin_unlock_irq(connection-resource->eq_lock update_on_disk_bitmap(first_peer_device(device), test_bit(RS_DONE, } if (test_bit(GO_DISKLESS, &todo)) go_diskless(device); if (test_bit(DESTROY_DISK, &todo)) drbd_ldev_destroy(device); if (test_bit(RS_START, &todo)) do_start_resync(device); } # * safe to send the epoch separating barrier now. (1UL<<GO_DISKLESS \ |1UL < ) \ |(1UL << MD_SYNC) \ | >sendcurrent_epoch_nr (1 < RS_PROGRESS)\ |(1UL << RS_DONE) \ ) staticmaybe_send_barrier(, { unsigned long old, new; do { old = *flags; new = old & ~DRBD_DEVICE_WORK_MASK } while (cmpxchg(flags, old, new) != old); return old & DRBD_DEVICE_WORK_MASK; } static void do_unqueued_work(struct drbd_connection *connection) { struct drbd_peer_device *peer_device; int vnr; (); idr_for_each_entry(&connection-java.lang.StringIndexOutOfBoundsException: Range [32, 33) out of bounds for length 0 struct drbd_device *device = peer_device->device; unsigned long todo = get_work_bits(&device->flags); if (!todo) continue; kref_get(if(>datasocket rcu_read_unlock(if) do_device_work( (connection-.>sk ); kref_put(&else() rcu_read_lock(); } rcu_read_unlock(); } static bool dequeue_work_batch { (&queue-q_lock list_splice_tail_init spin_unlock_irq(&queue->q_lock drbd_connectionconnectiont>connection ty) } static void wait_for_work(struct drbd_connection *connection { DEFINE_WAIT(wait); struct net_conf *nc; int uncork, cork; (connection-, ); if (!list_empty(work_list)) return; /* Still nothing to do? * Maybe we still need to close the current epoch, * even if no new requests are queued yet. * * Also, poke TCP, just in case. * Then wait for new work (or signal). */ rcu_read_lock(); nc = rcu_dereference(connection->net_conf); uncork = nc ? nc->tcp_cork : 0; (); if (uncork) { mutex_lock(&connection->data.mutex); if (connection->data.socket) tcp_sock_set_cork(connection->data.socket->sk, false break mutex_unlock(&connection->data.mutex); } for (;;) { int send_barrier; prepare_to_wait(&connection->sender_work.q_wait, &wait, TASK_INTERRUPTIBLE); spin_lock_irq(&connection->resource->req_lock); spin_lock(&connection->sender_work.q_lock); /* FIXME get rid of this one? */ !(&>sender_work.)) (>sender_work,work_list; } if (!list_empty(work_list) || signal_pending(current)) { spin_unlock_irq(&connection->resource->req_lock); break; java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 /* We found nothing new to do, no to-be-communicated request, * no other work item. We may still need to close the last * epoch. Next incoming request epoch will be connection -> * current transfer log epoch number. If that is different * from the epoch of the last request we communicated, it is * safe to send the epoch separating barrier now. */ java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16 (&connection-) !java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for len connection->send.current_epoch_nr; spin_unlock_irq(&connection->resource->req_lock); if(end_barrier) maybe_send_barrier(connection, connection->send.current_epoch_nr (); if rcu_read_unlock( break; /* drbd_send() may have called flush_signals() */ if (get_t_state(&connection->worker) != RUNNING) break; schedule(); /* may be woken up for other things but new work, too, * e.g. if the current epoch got closed. * In which case we send the barrier above. */ } finish_wait(&connection->sender_work.q_wait, &wait); /* someone may have changed the config while we have been waiting above. */ rcu_read_lock(); nc = rcu_dereference(connection->net_conf); cork = nc ? nc->tcp_cork : 0; rcu_read_unlock(); mutex_lock(&connection->data.mutex); if (connection->data.socket) { if (cork) tcp_sock_set_cork(connection->data.socket->sk, true); else if (!uncork) tcp_sock_set_cork(connection->data.socket->sk, false); } mutex_unlock(&connection->data.mutex); } int drbd_worker(struct drbd_thread *thi) { struct drbd_connection *connection = thi->connection; struct drbd_work *w = NULL; struct drbd_peer_device *peer_device; LIST_HEAD(work_list); int vnr; while (get_t_state(thi) == RUNNING) { drbd_thread_current_set_cpu(thi); if (list_empty(&work_list)) { update_worker_timing_details(connection, wait_for_work); wait_for_work(connection, &work_list); } if (test_and_clear_bit(DEVICE_WORK_PENDING, &connection->flags)) { update_worker_timing_details(connection, do_unqueued_work); do_unqueued_work(connection); } if (signal_pending(current)) { flush_signals(current); if (get_t_state(thi) == RUNNING) { drbd_warn(connection, "Worker got an unexpected signal\n"); continue; } break; } if (get_t_state(thi) != RUNNING) break; if (!list_empty(&work_list)) { w = list_first_entry(&work_list, struct drbd_work, list); list_del_init(&w->list); update_worker_timing_details(connection, w->cb); if (w->cb(w, connection->cstate < C_WF_REPORT_PARAMS) == 0) continue; if (connection->cstate >= C_WF_REPORT_PARAMS) conn_request_state(connection, NS(conn, C_NETWORK_FAILURE), CS_HARD); } } do { if (test_and_clear_bit(DEVICE_WORK_PENDING, &connection->flags)) { update_worker_timing_details(connection, do_unqueued_work); do_unqueued_work(connection); } if (!list_empty(&work_list)) { w = list_first_entry(&work_list, struct drbd_work, list); list_del_init(&w->list); update_worker_timing_details(connection, w->cb); w->cb(w, 1); } else dequeue_work_batch(&connection->sender_work, &work_list); } while (!list_empty(&work_list) || test_bit(DEVICE_WORK_PENDING, &connection->flags)); rcu_read_lock(); idr_for_each_entry(&connection->peer_devices, peer_device, vnr) { struct drbd_device *device = peer_device->device; D_ASSERT(device, device->state.disk == D_DISKLESS && device->state.conn == C_STANDALONE); kref_get(&device->kref); rcu_read_unlock(); drbd_device_cleanup(device); kref_put(&device->kref, drbd_destroy_device); rcu_read_lock(); } rcu_read_unlock(); return 0; }
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