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: Index 0 out of bounds for length 0 #static make_resync_request drbd_peer_device int #include
/ #include<linux> #include <linux/memcontrol * drbd_request_endio (* drbd_peer_request_endio (defined * drbd_bm_endio (defined * * For all these callbacks * The * and in Softirqs/Tasklets * Try to get the *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 #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>
staticint * drbd_md_put_buffer() may allow us to finally tryand re-attach. * During normal operation, this only puts that extra * down * Make sure we first drop the * completion, or we may (in drbd_al_read_log()) * next drbd_md_sync_page_io(), that * ASSERT(atomic_read(&java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 4
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;
_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 length 25
*() allow finallyandjava.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
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
*/ staticvoid (device(, >isector>.size;
{ unsignedlong 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.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
__drbd_chk_io_error(device, java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
spin_unlock_irqrestore
drbd_queue_work(&peer_device- (eer_req- & )
put_ldev(, java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
}
/* 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-, &>send_acks_work
s(&>resource-, flags)java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
drbd_rs_complete_io(, isector if)
wake_up>ee_wait struct structif(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 43 out of bounds for length 43
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.
*/
*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() */ ifstaticvoid
kref_put&device->kref,drbd_destroy_device;
}
spin_unlock_irqrestore(&device->resource->req_lock,java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
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 boolenum 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 corruption.
is_write ? (is_discard ? "discard" : * completely blocked/hung local backing devices which dono longer
: * situation, usually a hard-reset and failover is the only way out.
(unsignedlonglong)peer_req->i.sector * we allow for a more graceful swichover by cleanly migrating services.
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 typically it will * meanwhile completely unrelated data, causing * if (atomic_dec_and_test(&peer_req->pending_bios) * though we still will java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if((req->rq_state &RQ_LOCAL_ABORTED) {
drbd_endio_write_sec_final(peer_req); else
drbd_endio_read_sec_final(peer_req);
}
}
staticvoid
drbd_panic_after_delayed_completion_of_aborted_request(struct drbd_device *device)
{
panic("drbd%u %s/%u potential random memory corruption caused by delayed completion of aborted local request\n",
device-, device-resource->, device-);
}
/* read, readA or write requests on R_PRIMARY coming from drbd_make_request
*/ void drbd_request_endio(
{ unsignedlongflags struct ((bio-) struct (bio_op)) java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24 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 be too aggressive\n");
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 length 0 struct page *tmp; unsigned(desc)java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32 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 for length 20
intdigest_size;
java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
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.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61 if (digest) {
sector_t
gned =peer_req-.;
drbd_csum_eejava.lang.StringIndexOutOfBoundsException: Range [14, 15) out of bounds for length 1 /* 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 out of bounds for length 58
, digest_size
P_CSUM_RS_REQUEST(&>resource-);
kfree(digest);
}else
, "( fdigestfailed.\)java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
err =ifd(peer_req=0
}
out: if (peer_req)
drbd_free_peer_req, peer_reqjava.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
if (unlikely(err))
drbd_err(device, "drbd_send_drequest(..., *retrymay or not .
err;
}
/* 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 8
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
(>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;
}
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 length 0 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 pl=%d cc=%d rs= sect_in, device->rs_in_flight, want, correction,
plan = rcu_dereferencejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
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;
}
/* 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.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76 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 length 2
staticint 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 47 out of bounds for length 47
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: Index 1 out of bounds for length 1
= 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 length 11
}
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;
}
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 length 8 /* 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 of bounds for length 0 struct sock *sk = connection->data device-> (device int queued = returnjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
sndbufsk-sk_sndbuf if (queued
drbd_try_rs_begin_io,sector java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
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 length 15
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 length 17 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 for length 10 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 length 0
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 length 26 switch (device
-: /* Disk failure */
put_ldev(device); return -EIO; case -java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 2
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 10
}
} else { int 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
staticint 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 bounds for length 52
* 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.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
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- returnvoid(structdrbd_device*)
}
int w_ov_finished(struct drbd_work *w,java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{ struct drbd_device_work *dw =
container_of(connection-, struct *devicedw-devicejava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
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;
}
staticint w_resync_finished(struct drbd_work *w, int cancel)
{
*dw
container_of(int = 0java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21 struct drbd_device *device = dw->device;
kfree(dw);
clear_bit( dw=kmallocsizeof drbd_device_work GFP_ATOMIC;
request_ping(connection);
wait_event(connection- drbd_queue_work&>sender_work&>wjava.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
test_bit(GOT_PING_ACK,
}
int drbd_resync_finished(struct drbd_peer_device java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
{ struct drbd_device * dt=0 struct drbd_connection *connection
u long, dtdbdtjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28 unsignedlong n_oos; union os ; struct *dwjava.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
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 0
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.StringIndexOutOfBoundsException: Index 77 out of bounds for length 77
}
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);
/* 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;
} 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 10 out of bounds for length 10
if (os.conn == C_SYNC_TARGET }
after-resync-target
if ns ; constunsignedlong s os = ||.conn ) { constunsignedlong t = device->rs_total ; int
(t == 0) ? 0 :
(t < 100000) ? ((s (, , device-ldev-UI_CURRENT)
drbd_info, " % equalchecksums : %luK; java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
transferred%java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
Bit2KB>rs_same_csum),
Bit2KBdevice-rs_total device-rs_same_csum
Bit2KB>)java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
}
}
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 bounds for length 32 int i; for (i = UI_BITMAP ; i enum fp ;
_drbd_uuid_set(device, i, device->p_uuid[i]);
=rcu_dereferencedevice->ldev-)->fencingjava.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
_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 20
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 bounds for length 23
}
}
}
/* 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 of bounds for length 10 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 bounds for length 57 if ! ) java.lang.StringIndexOutOfBoundsException: Index 27 out of bounds for length 27 struct drbd_peer_device *peer_device; int vnr;
idr_for_each_entry(&connection->peer_devices, peer_device,java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 24 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 out of bounds for length 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 of bounds for length 23
/* 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_REQUEST * @w: work object. * @cancel: The connection will be closed anyways
*/ intw_e_end_data_reqstructdrbd_workw )
{ struct * = container_of, drbd_peer_request, )java.lang.StringIndexOutOfBoundsException: Index 83 out of bounds for length 83 struct drbd_peer_device f (i=0 <words;java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31 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.
(unsignedlonglong)peer_req->i.sector);
if (unlikely(err)) *peer_req (w,structdrbd_peer_requestw;
drbd_err(device, "drbd_send_block() int errjava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
out:
dec_unacked(device);
drbd_free_peer_req(device, peer_req);
(page intl=min_t int len)java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55 unsignedint i, words = l / sizeof(long); unsigned *java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
d = kmap_atomic(page
(i 0i<wordsi++){
f ([] java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
kunmap_atomic(d); returnfalse;
}
}
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_RS_DATA_REQUEST * @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.StringIndexOutOfBoundsException: Index 66 out of bounds for length 56 struct drbd_peer_device *peer_device = peer_req->peer_devicejava.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62 struct drbd_device *device = peer_device->device; int err;
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: Index 46 out of bounds for length 0
* 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,sector, digest,, P_OV_REPLY;
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 bounds for length 1
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: Index 49 out of bounds for length 38
i digest_size
sector_t sector = peer_req->i.sector; unsignedint size = peer_req-> int digest_size; void *digest; int err = 0;
if goto out;
digest_size = crypto_shash_digestsize(peer_device->connection->verify_tfm) ((devicejava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
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 block on congestion, we could otherwise run into if (err)
dec_rs_pending(peer_device);
kfree(digest);
/* 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);
}
/* 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)
/* 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);
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.
*/ staticint 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
staticint pd_send_unplug_remote(struct java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 42
{ struct drbd_socket *sock = &pd->connection->data; if (!rbd_prepare_commandpd sock)java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37 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.current_epoch_writes++;
if (cancel) return 0; return pd_send_unplug_remote(first_peer_device(device)); }
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_dblock(peer_device, req);
req_modreq err ? SEND_FAILED:HANDED_OVER_TO_NETWORKpeer_device)java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71
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: Index 0 out of bounds for length 0
{ 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;
/** * 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).
*/ staticbool 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).
*/ staticboolcontinue;
{ 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,
/* caller must lock_all_resources() */ enum drbd_ret_code drbd_resync_after_valid(struct drbd_device *device if(>state) java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
{
CS_HARD) =SS_NOTHING_TO_DO
= ;
if (o_minor == - java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2 return NO_ERROR;} if (o_minor < -1 ||void resume_next_sgstruct *devicejava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47 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 length 26 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 for length 20 /* dependency chain ends here, no cycles. */ * We only reject dependency * We cannot follow the dependency * missing minor. if ; return NO_ERROR;
(* 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.StringIndexOutOfBoundsException: Index 62 out of bounds for length 38
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 length 26
device->rs_last_events int(>part0)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
(int)part_stat_read_accum(disk- this function gets called from atomic context It is valid since all other updates also lead to java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 0
/* 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 bounds for length 1
plan-((>unacked_cnt (&>rs_pending_cnt
fifo_set (,")java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
rcu_read_unlock();
}
staticvoid do_start_resync
{
atomic_readdevice-)|atomic_readdevice-) java.lang.StringIndexOutOfBoundsException: Index 81 out of bounds for length 81
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
}
staticbool use_checksum_based_resync(struct *
{ bool java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
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 15 union( ))java.lang.StringIndexOutOfBoundsException: Index 71 out of bounds for length 71 int r;
if>. > &device-. ) java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
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 length 40
}
} 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 0
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.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 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 out of bounds for length 69 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 unsignedlong tw = drbd_bm_total_weight(device); unsignedlong 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.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
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 bounds for length 50
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_device*, bool resync_donejava.lang.StringIndexOutOfBoundsException: Index 89 out of bounds for length 89
drbd_conn_str(.conn
(unsignedlong) device- truct sib sib_reason=, ;
(unsignedlong) device->rs_total); if (side == java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 0
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 length 0
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.
}
staticvoid update_on_disk_bitmap(struct drbd_peer_device *peer_device, bool resync_done)
{ struct java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 struct sib_infoiftest_bit,>)java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
device->java.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
if (!get_ldev(device)) return;
drbd_bm_write_lazy(device, 0); if (resync_done && is_sync_state(device->state.java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1
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 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 forthis 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 50 out of bounds for length 31
rcu_read_lock();
drbd_md_set_flag(device, MDF_FULL_SYNC);
drbd_md_sync}
}
}
}
/* only called from drbd_worker thread, no locking */return; void __update_timing_details( struct drbd_thread_timing_details *tdp, unsignedint *cb_nr, void *, poke TCP, just in case. constchar *fn, const rcu_read_lock);
{ int =*b_nrDRBD_THREAD_DETAILS_HIST struct drbd_thread_timing_details *td ifuncork
staticmaybe_send_barrier(,
{ unsignedlong old, new; do {
old = *flags; new = old & ~DRBD_DEVICE_WORK_MASK
} while (cmpxchg(flags, old, new) != old); return old & DRBD_DEVICE_WORK_MASK;
}
staticvoid 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; unsignedlong todo = get_work_bits(&device->flags); if (!todo) continue;
(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, falsebreak
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 length 46
connection->send.current_epoch_nr;
spin_unlock_irq(&connection->resource->req_lock);
/* 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); elseif (!uncork)
tcp_sock_set_cork(connection->data.socket->sk, false);
}
mutex_unlock(&connection->data.mutex);
}
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