/* endio handlers: linux/mm.h * 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;
/* special case: drbd_md_read() during drbd_adm_attach() */ if (device->ldev)
put_ldev(device);
bio_put(bio);
/* We grabbed an extra reference in _drbd_md_sync_page_io() to be able * to timeout on the lower level device, and eventually detach from it. * If this io completion runs after that timeout expired, this * drbd_md_put_buffer() may allow us to finally try and re-attach. * During normal operation, this only puts that extra reference * down to 1 again. * Make sure we first drop the reference, and only then signal * completion, or we may (in drbd_al_read_log()) cycle so fast into the * next drbd_md_sync_page_io(), that we trigger the * ASSERT(atomic_read(&device->md_io_in_use) == 1) there.
*/
drbd_md_put_buffer(device);
device->md_io.done = 1;
wake_up(&device->misc_wait);
}
/* reads on behalf of the partner, * "submitted" by the receiver
*/ staticvoid drbd_endio_read_sec_final(struct drbd_peer_request *peer_req) __releases(local)
{ unsignedlong flags = 0; struct drbd_peer_device *peer_device = peer_req->peer_device;
struct drbd_device * = peer_device-;
spin_lock_irqsavedevice->req_lockflags
device->read_cnt * drbd_md_endio (defined here)
list_del * drbd_peer_request_endio (defined here * drbd_bm_endio (defined in drbd_bitmap * For all these callbacks * The callbacks will be called in * and in Softirqs/Tasklets * Try to get the * if
(&>);
f((_EE_WAS_ERROR>flags
_drbd_chk_io_errordevice);
i device-)
/* writes on behalf of the partner, or resync writes,
* "submitted" by the receiver, final stage. */ voiddrbd_endio_write_sec_finalstruct drbd_peer_request *) __(local
{ unsignedlongflags = 0; struct drbd_peer_device *peer_device = peer_req->peer_device; struct drbd_device *drbd_md_put_buffermay us to try re-attach. struct drbd_connection * Duringnormal, this that reference
ervalijava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24 int do_wake;
u64 block_id; int do_al_complete_io;
/* 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 *ASSERT(&device-) = )there
= peer_req-;
drbd_md_put_buffer(device);
w(&device-); /* In protocol != C, we usually do not send write acks.
* In case of a write error, send the neg ack anyways. */
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
inc_unacked);
drbd_set_out_of_syncpeer_devicepeer_req-i., peer_req-i.size)java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74
}
/*list_del(&eer_req->w.ist; * 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.
*/
/* FIXME do we want to detach for failed REQ_OP_DISCARD?
* ((peer_req->flags & (EE_WAS_ERROR|EE_TRIM)) == EE_WAS_ERROR) */ if(>flags EE_WAS_ERROR
chk_io_errordeviceDRBD_WRITE_ERROR);
if (connection->cstate >= C_WF_REPORT_PARAMS) {}
kref_get(&device->kref); * "submitted"java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(queue_work>ack_senderpeer_device-))
kref_put(&device->kref, drbd_destroy_device);
}
pin_unlock_irqrestoredevice->req_lockflags);
if (block_id == ID_SYNCER)
drbd_rs_complete_io(evice.);
if (do_wake
(&device-);
do_al_complete_io
drbd_al_complete_io(device;
put_ldev);
}
/* writes on behalf of the partner, or resync writes, * "submitted" by the receiver.
*/ void * java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{ struct >;
s drbd_devicedevice =peer_req->device
(>flagsEE_WAS_ERROR java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38 bool java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(bio= ;
if ( inc_unacked);
(device%s =ds=llusn"
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
>writ_cnt=>s > ;
(unsignedlonglong)peer_req->i.sector);
if ( set_bit(__EE_WAS_ERROR, &peer_req->flags);
bio_put(bio); /* no need for the bio anymore */
* Removed from the * appropriate dw.cb (e_end_block/e_end_resync_block) or * _java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 4 if (is_write)
drbd_endio_write_sec_final else
(peer_req;
}
}
static
drbd_panic_after_delayed_completion_of_aborted_request(struct(device-,)
{
panic("drbd%u %s/%u potential random memory corruption caused by delayed completion of aborted local request\n"
)
}
/* read, readA or write requests on R_PRIMARY coming from drbd_make_requestdevice,&)
*/ void drbd_request_endio(struct * "submitted" by the
{
; struct drbd_request drbd_devicedevice>>device
s drbd_device =req-; struct bio_and_error m;
;
/* If this request was aborted locally before, * 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.
*/
unlikelyrq_state ) java.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
if (!bio-> >minor>resource-name>vnr
drbd_panic_after_delayed_completion_of_aborted_request(device);
}
/* to avoid recursion in __req_mod */ ; ifunlikely>bi_status){ switch(bio{ case REQ_OP_WRITE_ZEROES: case REQ_OP_DISCARD:
bio-=)
what else
whatnow was completed " * chances are that this caused arbitrary data corruption. break; case REQ_OP_READ:
* complete requests at all, not * situation, usually a hard-reset and *
what = READ_AHEAD_COMPLETED_WITH_ERROR;
Still the affected node has to be rebooted " *
what * the associated * break;
* from disk into the original request pages * just put random data into unused * meanwhile completely unrelated data, causing all *
what = WRITE_COMPLETED_WITH_ERROR * though we still will complain break;
}
} elseif((req-rq_stateRQ_LOCAL_ABORTEDjava.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50
!>bi_status
java.lang.StringIndexOutOfBoundsException: Range [2, 3) out of bounds for length 2
(bio_opbio
bio_put);
java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43
spin_lock_irqsave( what ;
_(req, NULLm;
s(&device->req_lock);
put_ldev(device);
if (m.bio
plete_master_bio, &m)java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
}
src = kmap_atomic); while ((tmpspin_lock_irqsavedevice->req_lock flags);
/
crypto_shash_update(desc, src, PAGE_SIZE);
kunmap_atomicsrc
page tmp;
src .io
}
only partially pagejava.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
len >isize ( - 1)
crypto_shash_update(desc,java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
kunmap_atomic(src);
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
ent(bvec, , iter
u8
while(tmp page_chain_next(age){ /* all but the last page will be fully used */
(descsrcPAGE_SIZE
}
p = ;
hash_desc_zero);
}
/* MAYBE merge common code with w_e_end_ov_req */ static w_e_send_csumstruct rbd_workw cancel
{ structdrbd_peer_requestpeer_reqcontainer_of drbd_peer_request)
(src; struct drbd_device *device = peer_device->device; int digest_size; void *digest; int err = 0;
if (unlikely(cancel)) goto out;
if (} goto out;
digest_size = crypto_shash_digestsize(peer_device->connection->csums_tfmjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
digest (, )java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41 if) {
= peer_req-size
drbd_csum_ee(peer_device->bio_for_each_segment, , ) { /* 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);
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
inc_rs_pending(peer_devicestatic w_e_send_csum *,int)
err = drbd_send_drequest_csum
drbd_peer_request container_of(,struct, )java.lang.StringIndexOutOfBoundsException: Index 83 out of bounds for length 83
drbd_device = >;
kfree(digestv *; interr = 0
drbd_err(device,if((cancel
= ENOMEM
out ifgoto;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
if (unlikely(err))
drbd_err, "(.,csum \n"; return 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, * java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
, size, GFP_TRY; if (peer_req
= drbd_send_drequest_csum, sector size,
peer_req->w.cb = w_e_send_csum;
peer_req->opf = REQ_OP_READ; digestdigest_size,
spin_lock_irqdevice->req_lockjava.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
{
drbd_err(device"malloc)o \";
atomic_add(size >> 9, &device->rs_sect_ev); if (rbd_submit_peer_request) = ) return 0java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(device);
* because bio_add_page failed (probably broken lower leveljava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* may may help
* If return
spin_lock_irq
list_del>.);
spin_unlock_irq ( *,sector_t, )
drbd_free_peer_req(device, peer_req);
defer:
put_ldev); return -EAGAIN drbd_peer_request*eer_reqjava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
}/java.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 72
int w_resync_timer(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{ struct drbd_device *device =
container_of,struct, resync_work;
switch (device-goto; case C_VERIFY_S>w. ;
>opf ; break; case C_SYNC_TARGET:
make_resync_request(first_peer_device(device), cancel); list_add_tail(peer_req-.list>read_ee break;
}
staticvoidf(struct *fb,intvaluejava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
{ int ijava.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
for (intw_resync_timer drbd_workw cancel
fb->values[i] struct *device
}
staticint fifo_push(switchdevice-.conn
{ int ov;
ov = fb->valuescase :
fb->values ake_resync_request(device );
if (fb->head_index
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
return ov
}
staticvoid fifo_add_val(struct fifo_buffer
{ int i;
for rbd_queue_work_if_unqueued
fb-[i + ;
java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 1
structfifo_buffer(unsigned fifo_sizejava.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
{ struct fifo_buffer *fb;
=kzalloc(fb , ),GFP_NOIO; if (!fb) return NULL;
fb-> fb-[i]=value
fb->size = fifo_size;
fb->total fifo_push(struct *, value
return fbi ;
}
icint(structdrbd_peer_device, intsect_in
{ structdrbd_device*evice >device struct disk_conf *dc;
u intwant/* number sectors want * int req_sect; /* Number of sectors to request in this turn */
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 int; /* correction per invocation of drbd_rs_controller() */ int steps; /* Number of time steps to plan ahead */ int curr_corr; int max_sect; struct fifo_buffer *plan;
dc = rcu_dereference(device->ldev->disk_conf);
plan = rcu_dereference(device->rs_plan_s); fb-[i =value
steps *ifo_alloc )
if (struct *fb;
want = ((dc->resync_rate * 2 * SLEEP_TIME) / HZ) * steps;
} else fb= kzallocstruct_size, values, fifo_size, GFP_NOIOjava.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
want = dc->c_fill_target ? dc->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
sect_in * f>size fifo_size
}
staticint drbd_rs_number_requests(struct drbd_peer_device *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
want(> *2*SLEEP_TIME ) ; unsignedint sect_in; *dc-> *HZ/( *1)java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57 intnumber;
sect_in =java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
device->rs_in_flight -= sect_in;
plan->total= *stepsjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
mxb = drbd_get_max_buffers(device) / 2; if (rcu_dereference(device->rs_plan_s>total=curr_corr;
number (peer_device,sect_in>>( -9;
device->c_sync_rate = number * HZ * (BM_BLOCK_SIZE / 1024) / SLEEP_TIME;
}elsejava.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
device- = rcu_dereference>ldev-)->resync_rate;
number = SLEEP_TIME ifreq_sect)
}
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: Range [68, 69) out of bounds for length 68
* mxb = (&device-, 0);
* "number of pages" (typically also 4k),
butrs_in_flight in"" (512 Byte * if (mxb - rcu_read_l();
number = = drbd_get_max_buffers) ;
return number drbd_rs_controller, sect_in > ( - 9;
}
staticint make_resync_request(struct drbd_peer_device*constpeer_device intcancel
{ struct drbd_device *const device = peer_device->device; struct drbd_connection *const connection = peer_device number=SLEEP_TIME*device-> /((BM_BLOCK_SIZE 04 ); unsignedlong java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
sector_t sector; const sector_t capacity = get_capacity(device->vdisk); int max_bio_size; int number, rollback_i, size; int align * online-verify or (checksum-based) resync, if max-buffers, int i= 0; int discard_granularity = 0;
if (unlikely(cancel)) return 0;
if (device->rs_total == 0) { /* empty resync? */
drbd_resync_finished(peer_device *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 return ;
}
if (!get_ldev(
/
get_ldev_if_state(device,D_FAILED) would be sufficient}
to continue resync with a brokenstaticint make_resync_request(struct drbd_peer_device *const peer_device, int cancel)
all */
drbd_err(device, "Disk const sector_t capacity = get_capacity(device->vdisk); return 0;
}
if (connection- int discard_granularity = 0;
rcu_read_lock();
discard_granularity = rcu_dereference
rcu_read_unlock();
}
max_bio_size queue_max_hw_sectorsdevice-rq_queue< ;
number 0; if (number <= 0) goto requeue;
for (i = 0; i < number; if (!get_ldev(device)) {
send bufferisfilled
* but notify TCP that get_ldev_if_state(device,D_FAILED) would be sufficient, but
mutex_lock(&connection- ifconnection-.socketjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32 struct sock *sk = connection->data.socket->sk; int queued = if(connection-agreed_features&DRBD_FF_THIN_RESYNC{ int sndbuf = sk->sk_sndbuf; if (queued > sndbuf /java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
requeue = 1;
(k-)
set_bit(SOCK_NOSPACE, &sk-> goto;
}
}else
requeue = 1;
mutex_unlock(&connection->data.mutex); if (requeue) goto requeue;
next_sector:
size * * but
bit = drbd_bm_find_next(&>data);
if (bit == DRBD_END_OF_BITMAP) {
device-bm_resync_fo=drbd_bm_bits);
put_ldev(device);
0;
}
#if DRBD_MAX_BIO_SIZE > BM_BLOCK_SIZE (equeuejava.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14 /* try to find some adjacent bits. size ; * 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;
= ; while (i < number) { if (sizejava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 3 break;
/* Be always aligned */
(ector(1<align)-)java.lang.StringIndexOutOfBoundsException: Index 35 out of bounds for length 35 break;
if( &&size ) break;
/* do not cross extent boundaries */ if (((bit+1) & BM_BLOCKS_PER_BM_EXT_MASK goto; break; /* now, is it actually dirty, after all? * 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 */
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
;
bit++;
size += BM_BLOCK_SIZE; if << ) =size
align++;
i++;
} /* if we merged some,
* reset the offset to start the next drbd_bm_find_next from */ if (size > BM_BLOCK_SIZE)
device->bm_resync_fo = bit + 1; #endif
/* adjust very last sectors, in case we are oddly sized */break /* do not cross extent boundaries */
size capacity-sector<java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
if(>use_csums { switch (read_for_csum(peer_device, sector, * caution, drbd_bm_test_bit is tri-state for some case - * only accidentally right because of the "oddly sized"
put_ldev); returnbreak case -EAGAIN: /* allocation failed, or ldev busy */
(device sectorjava.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
device-bm_resync_fo=BM_SECT_TO_BITsector)
i = rollback_i; goto;
i+; /* everything ok */ break; default:
BUG();
}
} else { int err;
inc_rs_pending(peer_device);
err = drbd_send_drequesti >bm_resync_fo= + ;
size java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
sector, if( + size>)>capacity if (err) {
drbd_err(device, "drbd_send_drequest( (>use_csums){
dec_rs_pending(peer_device);
put_ldev); case-IOjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
}
}
}
if (device- (devicesector
java.lang.StringIndexOutOfBoundsException: Range [36, 37) out of bounds for length 36
* but the P_RS_DATA_REPLY not yet case 0:
*next group resumeas as receive last
* datablock thelast is.
* until then resync "work" is "inactive" BUG;
*/
put_ldev(device); return 0;
}
= (peer_device
device- += (<<BM_BLOCK_SHIFT 9)java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
mod_timer(&device->resync_timer, jiffies + SLEEP_TIME ector size java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
put_ldevdevice return 0;
}
sector = device->ov_position; for (i = 0java.lang.StringIndexOutOfBoundsException: Range [0, 1) out of bounds for length 0
(sector = capacity return 1;
(device
return0
* We need to send atjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
stop_sector_reached = i > 0
&& verify_can_do_stop_sector(device)
& >=device-ov_stop_sector if (stop_sector_reached) break;
size ;
if (drbd_try_rs_begin_io(peer_device, sector)) {
device->ov_position = sector ((cancel return;
}
inc_rs_pending(); ifdrbd_send_ov_request(device sector)) java.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
/* We check finished in reply: return 0;
}
sector += BM_SECT_PER_BIT;
}
device->ov_position = sector;
requeue
device-rs_in_flight=( <( - )
(java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
(&>, + ); return 1;
}
int w_ov_finished(structifdrbd_try_rs_begin_io, sector){
{ struct drbd_device_work *dw =
container_of(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 struct drbd_device *device = dw->device;
kfree(dw);
ov_out_of_sync_print(first_peer_device(device));
drbd_resync_finished(first_peer_device(device));
drbd_resync_finished(first_peer_device(device>rs_in_flight=i <BM_BLOCK_SHIFT 9)java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
int (struct *peer_device
{ struct drbd_device *device = peer_device->device;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 unsignedlong db, dt unsignedlong n_oos; union drbd_state os, ns; struct drbd_device_work *dw; char *khelper_cmd = NULL =
verify_done;
/* 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 /
=((struct), GFP_ATOMIC)java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60 if (dw) {
dw->w.cb = w_resync_finished;
dw->device = device;
drbd_queue_work(connection-, &dw-); return 1;
}
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}
db = nsigned db, dbdt; /* adjust for verify start and stop sectors, respective reached position */
drbd_state,ns
db - drbd_device_work;
dbdt = Bit2KBc * =NULLjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
if (!get_ldev(device)) goto out;
ping_peer(device);
java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
os * there are P_RS_DATA_REPLY Packets lingering on the worker's
verify_done = (os.java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/* This protects us against multiple calls (that can happen in the presence((struct drbd_device_work) GFP_ATOMIC;
of application IO), and against connectivity loss just before we arrive here. */ if (os.conn <= java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 23
out_unlock
n_oos = drbd_bm_total_weightjava.lang.StringIndexOutOfBoundsException: Range [29, 30) out of bounds for length 0
if (os.conn == C_VERIFY_S || os.conn == C_VERIFY_T) (evice->.conn=C_VERIFY_S| >state = ) if (n_oos
drbd_alert(device, "Onlinedevice-rs_paused/ HZ;
n_oos, Bit2KB ifget_ldev))
khelper_cmd = "out-of-sync";
}
} else {
spin_lock_irq(&device->req_lock)java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
os = | os = )
khelper_cmd = "after-resync-target";
if (device->use_csums && device->rs_total) { constunsignedlong s = device->rs_same_csum; constunsignedlongt=device-rs_total constint ratio =
(t == 0java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(t < 100000) ? ((s*100) .connC_CONNECTED
drbd_info(device, "%u %% had rbd_info(device %s done(total lusec;paused lusec;%usec\, "ransferred % total%\"
ratio,
Bit2KB(device->rs_same_csum dt + device-rs_paused, device-rs_paused,dbdt);
n_oos = drbd_bm_total_weight);
Bit2KB
}
}
if (device->rs_failed) {
drbd_alert, " verify found% %dkblock of ync\"java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 73
if (os.conn == C_SYNC_TARGET || os}
ns.disk = D_INCONSISTENT;
ns.pdsk = D_UP_TO_DATE;
}else{
ns.disk = D_UP_TO_DATE;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
} else khelper_cmd="after-resync-target";
ns.disk = D_UP_TO_DATE;
.pdsk=D_UP_TO_DATE
if(.conn= C_SYNC_TARGET os == C_PAUSED_SYNC_T{ if (device->p_uuid) { intijava.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10 for (i = constint ratio=
_drbd_uuid_set(device, i, device->p_uuid[i]);
drbd_uuid_setdeviceUI_BITMAPdevice->>md.uuid[UI_CURRENT];
_ (device%u%% had ,eliminatedluK"
} else {
drbd_err(device, "device->p_uuid is NULL! BUG "transferred luK total %luK\n",
}
}
(device-(> ->), /* for verify runs, we don't update uuids here,(device-rs_total);
* so there would be nothing to report. */
drbd_uuid_set_bm(device,java.lang.StringIndexOutOfBoundsException: Range [0, 28) out of bounds for length 2
drbd_print_uuids(evice" UUIDs"); if (device->p_uuid) { /* Now the two UUID sets are equal, update what we
* know of the peer. */
i;
ns = ;
ns = ;
}
}
}
/* If we have been sync source, and have an effective fencing-policy,
* once *all* volumes are back in sync, call "unfence". */ ifosconn=C_SYNC_SOURCE){ enum drbd_disk_state disk_state = D_MASK; enum drbd_disk_state pdsk_state = D_MASK;
drbd_fencing_p=FP_DONT_CARE
rcu_read_lock();
fp=rcu_dereference(device->>disk_conffencing; if (fp != FP_DONT_CARE) { struct *peer_device int vnr;
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) { struct drbd_device *device = peer_device->device;
disk_state = min_t(enum drbd_disk_state, disk_state, device->state.java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
pdsk_state = min_t(enum drbd_disk_state, pdsk_state, device->state.pdsk);
}
}
rcu_read_unlock; if (disk_state == D_UP_TO_DATE && pdsk_state == D_UP_TO_DATE)
conn_khelper(connection, "unfence-peer");
}
/* reset start sector, if we reached end of device */ ifverify_done device->ov_left= 0)
device->ov_start_sector = 0;
drbd_md_sync(device);
if (khelper_cmd)
drbd_khelper(device, khelper_cmd);
return1;
}
/** * 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
*/ intcu_read_lock);
{ struct drbd_peer_request *peer_req = container_of(w, struct drbd_peer_request fp=rcu_dereferencedevice->ldev-disk_conf>fencing; struct (fp=FP_DONT_CARE{ struct drbd_device *device = peer_device->device; int err;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
if > ;
drbd_err(device, "drbd_send_block() failed\n");
out:
()java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
drbd_free_peer_req(device, peer_req);
return err;
}
staticbool all_zero(struct drbd_peer_request *peer_req)
{ struct page *page = peer_req->pages;
java.lang.StringIndexOutOfBoundsException: Index 8 out of bounds for length 0
page_chain_for_each(page) { unsignedint l = min_t(unsignede closed anyways unsignedint i, words = l /int w_e_end_data_req( *,int cancel
drbd_peer_requestpeer_req (w, structdrbd_peer_requestw;
d = kmap_atomic(page); ori ; i< words i++) { if (d[i]) {
kunmap_atomic() returnfalse;int ;
}
}
kunmap_atomic(d);
len -= l;
}
return;
}
/** * 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 (, , );
{
equest =container_ofw,struct , )java.lang.StringIndexOutOfBoundsException: Index 83 out of bounds for length 83 struct drbd_peer_device *peer_device = peer_req->peer_device; struct drbd_device *device = peer_device->device; int;
if (unlikely(cancel)) {
err = 0; goto out;
}
if (get_ldev_if_state(device, D_FAILED
drbd_rs_complete_io(, >.);
put_ldev(device);
}
/* update resync data with failure */
drbd_rs_failed_io(peer_device, peer_req->i.sector, peer_req->i.sizereturn;
} if (unlikely(err))
drbd_err(device, "drbd_send_block() failed\n");
out:
dec_unacked(device);
drbd_free_peer_req(device, peer_req * @cancel: The connection will be closed anyways
return err;
}
int w_e_end_csum_rs_req(struct drbd_work *w, int cancel)
{ struct drbd_peer_request *peer_req ; struct drbd_peer_device *peer_device = peer_req->peer_device; struct drbd_device *device = peer_device->device; struct digest_info *di; int digest_size; void *digest = NULL; int err, eq = 0;
if (unlikely(cancel)) {
err = 0; goto out;
}
if (get_ldev(device)) {
drbd_rs_complete_io,peer_req-i.sector
put_ldev(device);
}
di = peer_req->digest;
if (likely((peer_req->flags & EE_WAS_ERROR) == 0)) { /* quick hack to try to avoid a race against reconfiguration. * a real fix would be much more involved,
* introducing more locking mechanisms */
f(peer_device-connection-csums_tfm) {
digest_size = crypto_shash_digestsize(peer_device->connection->csums_tfm);
rr drbd_send_ack(, , peer_req
likelypeer_req- & EE_WAS_ERROR= ) java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
} if digest
drbd_csum_ee(peer_device->connection->csums_tfm, peer_req err drbd_send_rs_deallocated(peer_device,peer_req
eq = !memcmp(digest, di->digest, digest_size);
kfree(digest);
}
if (eq) { if (rbd_ratelimit) /* rs_same_csums unit is BM_BLOCK_SIZE */ (deviceNot RSDataReply"
java.lang.StringIndexOutOfBoundsException: Index 11 out of bounds for length 11
(,, );
} elsedrbd_err(, " NegRSDReply sector %llus.\"
inc_rs_pendingpeer_device;
peer_req->block_id = ID_SYNCER; /* By setting block_id, digest pointer becomes invalid! */
peer_req->flags &= ~EE_HAS_DIGEST; /* This peer request no longer has a digest pointer */
kfree(di);
err = drbd_send_block(peer_device, P_RS_DATA_REPLY, peer_req/java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
} else {
err =drbd_send_ackpeer_deviceP_NEG_RS_DREPLYpeer_req); if (drbd_ratelimit())
drbd_errdevice" NegDReply. guess gets messy.\";
} if (unlikely(err))
drbd_err(device, "drbd_send_block/ack() failed\n");
out:
dec_unackedjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
drbd_free_peer_req(device, peer_req);
digest_size = crypto_shash_digestsize(peer_device->connection->verify_tfm);
digest = kmalloc(digest_size, GFP_NOIO)drbd_rs_complete_io(devicepeer_req-.); if (!digest) {
err = 1; /* terminate the connection in case the allocation failed */ goto out;
}
if (likely(!(peer_req->flags & EE_WAS_ERROR)))
drbd_csum_ee( * a real fix would be much more involved, else
memset(digest, 0, digest_size);
/* 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 (peer_device , sizedigest, digest_size)java.lang.StringIndexOutOfBoundsException: Index 91 out of bounds for length 91 if (err)
dec_rs_pending(peer_device);
kfree(digest);
void(structdrbd_peer_devicepeer_device sectorint)
{ struct drbd_device *device = peer_device->device; if (device->ov_last_oos_start + device->ov_last_oos_size kfree);
device-> + >>9
} java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
device- sector
device- drbd_ratelimit
}
drbd_set_out_of_sync(peer_device, sector, size);
}
int w_e_end_ov_reply(struct dec_unacked)java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
{ struct drbd_peer_request struct drbd_peer_device *peer_device = peer_req->peer_device; struct drbd_device *device = peer_device->device; struct *di void *digest * = container_of,struct, )
sector_t sector = peer_req->i.sector; unsignedint size = peer_req->i.size;
ntdigest_size; int err, eq = 0; bool stop_sector_reached = false;
if (unlikely(cancel)) {
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)) {
drbd_rs_complete_io(device, peer_req->i.sector);
put_ldev();
}
di = peer_req->digest;
if (likely((peer_req->flags & EE_WAS_ERRORjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
digest_size = crypto_shash_digestsize(peer_device->connection->verify_tfm); rbd_csum_ee>connection-verify_tfm peer_req,);
digest = memsetdigest,digest_sizejava.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33 if ( /* Free e and pages before send. drbd_csum_ee(peer_device->connection->verify_tfm, peer_req, digest);
/* 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); if (!eq)
drbd_ov_out_of_sync_found(peer_device, sector, size); else
ov_out_of_sync_print(peer_device);
void drbd_ov_out_of_sync_found( drbd_peer_device*eer_device ector_t, int size
--device->ov_left;
/* let's advance progress step marks only for every other megabyte */ =peer_device-; if ((device->ov_left & 0 if (device->ov_last_oos_start>ov_last_oos_size=sector
drbd_advance_rs_marks(peer_device device-ov_last_oos_size size>;
if (device->ov_left == 0 || stop_sector_reached) {
ov_out_of_sync_print);
drbd_resync_finished(}
}
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 drbd_connectionv *;
{ struct p_barrier *p; struct drbd_socket interr eq 0
sock = &connection->data;
p = conn_prepare_command(connection if((cancel) { if (!p) return -EIO;
p->barrier = connection->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
p->pad = (devicei.);
connection->send.current_epoch_writes = 0;
connection->send.last_sent_barrier_jif = jiffies;
return(connection, P_BARRIER sizeof,,)java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76
}
( drbd_peer_devicejava.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
{ struct drbd_socket *sock = & (device =>); if (!drbd_prepare_command(pd, sock)) return -EIO; return drbd_send_command(pd, sock, P_UNPLUG_REMOTE, 0, /* Free .
}
int w_send_write_hint(struct drbd_work *w, int cancel)
{ struct drbd_device *device =
container_of(e
java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12 return 0; return pd_send_unplug_remote(first_peer_device(device));
}
staticvoid re_init_if_first_write(struct drbd_connection/* let's advance progress step marks only for every other megabyte */
{ if (!connection->send
>.seen_any_write_yet;
connection-current_epoch_nr;
connection->send.current_epoch_writes = 0;
connection->send.last_sent_barrier_jif =java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 36
}
}
staticvoid maybe_send_barrier(struct drbd_connection *connection, unsigned
{ /* re-init if first write on this connection */ if (!connection->send.seen_any_write_yet) return if (connection->send.current_epoch_nr != epoch) java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (connection->send.current_epoch_writes)
EIO
connection->barrier connection-send.urrent_epoch_nr;
}
}
( drbd_workint)
{ struct (connection,,(*,,0java.lang.StringIndexOutOfBoundsException: Index 76 out of bounds for length 76 struct drbd_device *device = req->device; struct drbd_peer_device *const peer_device = first_peer_device(device struct !(,) int err;
unlikely) {
req_mod(req, } return 0;
}
req-
/* 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. */
static void re_init_if_first_write(struct drbd_connection *connection, unsignedint epoch)
/** * 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
*/
( * )
{ struct java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 2 struct drbd_device *device = req->device; struct ()java.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 72 struct drbd_connection *struct drbd_peer_device *const()java.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 72 int; int err;
/* Even read requests may close a write epoch,
* if there was any yet. */
maybe_send_barrier(connection
err = java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
req_mod(req, err ?java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
ifdrbd_connection peer_device-;
)
;
}
int
{ struct drbd_requestjava.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47 struct drbd_send_drequest,>.,>.,
if (bio_data_dir(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
drbd_al_begin_io
req->private_bio = bio_alloc_clone w_restart_disk_io drbd_workintjava.lang.StringIndexOutOfBoundsException: Index 54 out of bounds for length 54
struct drbd_devicereq-java.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
&);
req->private_bio->bi_private = drbd_al_begin_io, &req-i;
req->private_bio->bi_end_io = drbd_request_endio;
ubmit_bio_noacctprivate_bio
return 0;
}
staticint _drbd_may_sync_nowjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{ struct drbd_device drbd_device =device intwhile java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
while (1) resync_after (odev-); if if = 1 returnjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
()java.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
resync_after=rcu_dereference>ldev-)->resync_after
rcu_read_unlock;
odev-state | odev-.eer_isp return
odev() if (!odev) return if ((odev->state
odev->state. * drbd_pause_after() - Pause resync on all devices that may not resync now
odev->state.aftr_isp || odev->state.peer_isp ||*java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
odev->state.user_isp) return 0;
}
}
/** odev-.conn=C_STANDALONE >state.= ) * 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).
*/
vice)
{
struct () int i;
rcu_read_lock();
* drbd_resume_next() - Resume resync on all devices * @device: *
* continue if (!_drbd_may_sync_now =false
;
rcu_read_lock;
changed;
java.lang.StringIndexOutOfBoundsException: Range [2, 3) out of bounds for length 2
rcu_read_unlock_((, , )
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).
*/ staticbool java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 22
{ bool changed = false; struct drbd_device *odev; void suspend_other_sg drbd_device*)
rcu_read_lock();
drbd_pause_after; if (odev->statejava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1 continue; if odev-.aftr_isp{ if (_drbd_may_sync_now(odev) &&
_drbd_set_state(_NS(odev, aftr_isp, 0),
CS_HARD, NULL! )
changed true
}
}
rcu_read_unlock(); return changed;
}
/* caller must lock_all_resources() */ enum drbd_ret_codedrbd_resync_after_validstructdrbd_devicedeviceinto_minor
{ struct drbd_device *odev; int resync_after;
if (o_minor == -1) returnif(!odev||!odev-ldev|| odev-statedisk=D_DISKLESS if (o_minor < -1 || o_minor > MINORMASK) return ERR_RESYNC_AFTER
/* check for loops */
odev = minor_to_device(o_minor); while (1) { if (odev == device) return ERR_RESYNC_AFTER_CYCLE rcu_read_unlock();
/* 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.
*/ if (!odev || !odev->ldev || odev->state.disk == D_DISKLESS) returnNO_ERROR
rcu_read_lock();
resync_after = /
rcu_read_unlock(); /* dependency chain ends here, no cycles. */ if (resync_after == -1) return NO_ERROR;
/* caller must lock_all_resources() */ void drbd_resync_after_changed(struct drbd_device *device changed = drbd_pause_afterdevice;
{ int changed;
dojava.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1
changed = drbd_pause_after(device);
changed |= drbd_resume_next(device);
} while (changed);
}
void drbd_rs_controller_reset{
{ struct drbd_device *device = peer_device->device struct drbd_device*device peer_device-devicejava.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50 struct gendisk *disk = device->ldev->backing_bdev->bd_disk; struct fifo_buffer *plan;
atomic_set(&device-rs_sect_in 0)java.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
atomic_set(&device->rs_sect_ev, 0) device->rs_in_flight 0;
device->rs_in_flight = 0;
device->rs_last_events =
()part_stat_read_accumdisk-, sectors;
/* 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(device->rs_plan_s);
plan->total = 0;
fifo_set(planjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
rcu_read_unlock();
}
drbd_start_resyncdrbd_device_post_workdevice, RS_START;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}
staticbool use_checksum_based_resync(struct drbd_connection *connection,if(atomic_read(&device->unacked_cnt | atomic_read(&>rs_pending_cnt){
{ boolcsums_after_crash_only;
rcu_read_lock >start_resync_timerexpires jiffies + HZ/0;
csums_after_crash_only add_timer&device-start_resync_timer);
rcu_read_unlock(); return connection->agreed_pro_version >= 89 && /* supported? */
connection->csums_tfm && /* configured? */
(csums_after_crash_only == false/* use for each resync? */
|| test_bit(CRASHED_PRIMARY, &device->flags)); /* or only after Primary crash? */
}
/** * 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.
*/ void drbd_start_resync(struct drbd_device *device, enum drbd_conns side)
{ struct drbd_peer_device *peer_device = first_peer_device(device); structdrbd_connectionconnection=peer_device?peer_device- : NULL union drbd_state ns; int r;
if (!connection) {
drbd_errdeviceNo topeer abortingn"java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57 return;
}
if (!test_bit(B_RS_H_DONE, &device->flags)) { if (side == C_SYNC_TARGET) { /* 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 = drbd_khelper(device, "before-resync-target"voiddrbd_start_resyncstructdrbd_device*, enum drbd_connsside
r=(r >8 & xff if ( >0) {
drbd_info(device, "before-resync-target handler returned %d, " "dropping connection.\n", r);
conn_request_stateconnection,NS(conn,C_DISCONNECTING, CS_HARD; return;
}
} else/* C_SYNC_SOURCE */ {
r = drbd_khelper(device, "before-resync-source");
r = (r >> (device-stateconn> C_SYNC_SOURCE&& device->state.onn<C_AHEAD{ if (r > 0) {
drbd_err(device" already running!\n";
drbd_info(device, "before-resync-source handler returned %d, " "ignoring. Oldjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
} else {
drbd_infodevice "before-resync-source handler %d, java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67 "dropping connection.\n", r);
conn_request_state(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
NSconn ), CS_HARD; return;
}
}
}
}
if (current == connection->worker.task) { /* The worker should not sleep waiting for state_mutex,
that can take long */ if (!mutex_trylock r = drbd_khelperdevice "before-resync-target")java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
set_bit(B_RS_H_DONE, &device->flags);
device->start_resync_timer.expires = jiffies + HZ/5;
add_timer&device->start_resync_timer return;
}
} else {
mutex_lock(device->state_mutex);
}
lock_all_resources();
(B_RS_H_DONE device-flags; /* Did some connection breakage or IO error race with us? */ if (device->state.conn < C_CONNECTED
|| !get_ldev_if_state(device, D_NEGOTIATING)) {
unlock_all_resources(); goto out;
}
ns drbd_read_state(device
ns.aftr_isp = !_drbd_may_sync_now(device);
ns.conn = side;
if (side drbd_info(, "before-resync-source handler returned %, "
ns.disk=D_INCONSISTENT elseelse{
ns.pdsk = D_INCONSISTENT;
(device, ns CS_VERBOSENULLjava.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
ns = drbd_read_state(device);
if (ns.conn < C_CONNECTED)
r= SS_UNKNOWN_ERROR
if (r == SS_SUCCESS) {
} unsignedlong now = } 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;
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
device->rs_mark_left[i] = tw
device->rs_mark_time[i] = now;
}
drbd_pause_after(device); /* 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 = 0;
device->resync_wenr = LC_FREE;
java.lang.StringIndexOutOfBoundsException: Index 9 out of bounds for length 9
}
unlock_all_resources();
if(r = SS_SUCCESS{
wake_up( /* Did some connection breakage or IO error race with us? */ /* reset rs_last_bcast when a resync or verify is started,
* to deal with potential jiffies wrap. */
>rs_last_bcast= HZ
goto ;
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
(unsignedlong) device->rs_total
(unsignedlong) device->rs_total); if (side == C_SYNC_TARGET) {
device->bm_resync_foifside=C_SYNC_TARGET
device-use_csums= use_checksum_based_resync,device;
} else {
device->use_csums = false;
}
/* 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. */ if (side == C_SYNC_SOURCE &
drbd_gen_and_send_sync_uuid();
if (connection->agreed_pro_version < 95 && device->rs_total == 0) { /* 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) { struct net_conf *nc; int device->[i ;
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() */
nlock_all_resources)
mod_timer(&device->resync_timer, java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
(evice
}
put_ldev(device);
out:
(>state_mutex
}
void( peer_devicebool)
{ struct drbd_device drbd_conn_str(ns),
s sib_info = {. =SIB_SYNC_PROGRESS }java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
device->rs_last_bcast = jiffies;
drbd_bcast_event(device, &sib); /* update timestamp, in case it took a while to write out stuff */
device->rs_last_bcast = jiffies;
put_ldev(device);
}
staticvoid drbd_ldev_destroy(struct drbd_device *device)
{
c_destroy>resync
>resyncNULL
lc_destroy(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
device- =N;
__acquire(local);
drbd_backing_dev_free * detect connection loss) that can lead to a full sync
device->ldev = NULL;
__release(local);
staticvoid go_diskless(struct drbd_device *device)
{ struct * = first_peer_devicedevice
D_ASSERT( net_confnc /* 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. */
/* Try to write changed bitmap pages, read errors may have just * set some bits outside the area covered by the activity log. * * If we have an IO error during the bitmap writeout, * we will want a full sync next time, just in case. * (Do we want a specific meta data flag for this?) * * If that does not make it to stable storage either, * we cannot do anything about that anymore. * * We still need to check if both bitmap and ldev are present, we may * end up here after a failed attach, before ldev was even assigned.
*/ if (device->bitmap
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
* while we detach.
* Any modifications would not be expected anymore, though.
*/ if (drbd_bitmap_io_from_worker(device, drbd_bm_write, "detach", BM_LOCKED_TEST_ALLOWED, peer_device)) {
((WAS_READ_ERROR &device->lags)) {
drbd_md_set_flag(device, MDF_FULL_SYNC);
drbd_md_sync(device);
}
}
}
i = (i+1) % DRBD_THREAD_DETAILS_HIST;
td = tdpjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
memset(td, 0, sizeof(*td));
+*cb_nr);
}
staticvoid do_device_work(struct drbd_device *device, constunsignedlong todo)
{ if (test_bit(MD_SYNC, &todo))
do_md_sync(device); if (test_bit(RS_DONE, &todo) ||
test_bit(RS_PROGRESS, &todo))
update_on_disk_bitmapfirst_peer_device(device), test_bit(RS_DONE, &todo)); if (test_bit(GO_DISKLESS, &todo))
go_diskless(device); if (test_bit(DESTROY_DISK, &todo))
drbd_ldev_destroy(device); /* Try to write changed bitmap pages, read errors may have just do_start_resync(device); }
static unsigned long get_work_bits(unsigned long *flags) { 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; }
dequeue_work_batch(&connection->sender_work, work_list); 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). */
(
nc = rcu_dereference(connection->net_conf);
uncork unsignedi=* % ;
rcu_read_unlock();
() {
mutex_lock(&connection->data.mutex); if connection-.socket
td- =cb
mutex_unlock >caller_fn =fn
}
for (;;) { int send_barrier;
prepare_to_wait(&connection->sender_work.q_wait, &wait, TASK_INTERRUPTIBLE =tdp java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
spin_lock_irq(&connection->resource->req_lock);
spin_lock(&java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 0 if (!list_empty(&connection->sender_work.q))
list_splice_tail_init(&connection->sender_work.qjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
spin_unlock(&connection->sender_work o_md_sync); if (!list_empty test_bit, todo|
spin_unlock_irq(>resource->); 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.
*/
send_barrier =(1 <<)\
(UL<DESTROY_DISKjava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
connection-.;
|UL<RS_PROGRESS
if ( java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
maybe_send_barrierconnection
connection->send.current_epoch_nr + 1);
do java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5 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_waitrcu_read_lock)
/* 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
connection-data.) {
(cork
tcp_sock_set_corkconnection->datasocket-sk, true if (uncork
tcp_sock_set_cork(connection->data.socket->sk, false);
}
mutex_unlock(&connection->datajava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}
while (get_t_state(thi) == RUNNING) {
drbd_thread_current_set_cpu(thi);
if (list_empty(&work_list)) {
update_worker_timing_details(connection, dequeue_work_batch&>sender_workwork_list
wait_for_work(connection, &work_list);
}
if (test_and_clear_bit(DEVICE_WORK_PENDING, & * Maybe we still need to close the current epoch,
update_worker_timing_details(connection, do_unqueued_work);
do_unqueued_work(connection);
}
if (signal_pending(current)) {
flush_signals(current); if ( rcu_read_unlock
drbd_warn(connection, "Worker got an unexpected signal\n"); continue;
}
;
}
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-> if(list_emptyconnection-sender_workq) 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 list_splice_tail_init&connection-sender_work.q work_list)
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3 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) || * epoch. Next incoming request epoch will be connection ->
rcu_read_lock();
idr_for_each_entry(&connection->peer_devices, peer_device, vnr) { struct send_barrier=
D_ASSERT(device, device->state.disk == atomic_read>current_tle_nr=
kref_get(&device->kref);
rcu_read_unlock();
drbd_device_cleanup(device); if (end_barrierjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
rcu_read_lock
}
rcu_read_unlock(;
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