| Commit message (Collapse) | Author | Age | Files | Lines |
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- Remove client side self-healing completely (opendir, openfd, lookup)
- Re-work readdir-failover to work reliably in case of NFS
- Remove unused/dead lock recovery code
- Consistently use xdata in both calls and callbacks in all FOPs
- Per-inode event generation, used to force inode ctx refresh
- Implement dirty flag support (in place of pending counts)
- Eliminate inode ctx structure, use read subvol bits + event_generation
- Implement inode ctx refreshing based on event generation
- Provide backward compatibility in transactions
- remove unused variables and functions
- make code more consistent in style and pattern
- regularize and clean up inode-write transaction code
- regularize and clean up dir-write transaction code
- regularize and clean up common FOPs
- reorganize transaction framework code
- skip setting xattrs in pending dict if nothing is pending
- re-write self-healing code using syncops
- re-write simpler self-heal-daemon
Change-Id: I1e4080c9796c8a2815c2dab4be3073f389d614a8
BUG: 1021686
Signed-off-by: Anand Avati <avati@redhat.com>
Reviewed-on: http://review.gluster.org/6010
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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"unlock failed on 1 unlock" seems meaningless in the log message. Improved it.
Change-Id: If67d3f9d4aa5310d0b6728a6c89fa58a5cc93d12
BUG: 1012947
Signed-off-by: Anuradha <atalur@redhat.com>
Reviewed-on: http://review.gluster.org/6012
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
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Problem:
internal_lock->lk_attempted_count keeps track of the number of blocking
locks attempted. lk_expected_count keeps track of the number locks expected.
Here are the sequence of steps that happen which lead to the illution that
a full file lock is achieved, even without attempting any lock.
2 mounts are doing dd on same file. Both of them witness a brick going
down and coming back up again. Both of the mounts issue self-heal
1) Both mount-1, mount-2 attempt full file locks in self-heal domain.
lets say mount-1 got the lock, mount-2 attempts blocking lock.
2) mount-1 attempts full file lock in data domain. It goes into blocking
mode because some other writes are in progress. Eventually it gets the lock.
But this results in lk_attempted_count to be still as 2 and will not be reset.
It completes syncing the data.
3) mount-1 before unlocking final small range lock attempts full file lock in
data domain to figure out the source/sink. This will be put into blocked mode
again because some other writes are in progress. But this time seeing the
stale value of lk_attempted_count being equal to lk_expected_count, blocking_lock
phase thinks it completed locking without acquiring a single lock :-O.
4) mount-1 reads xattrs without any lock but since it does not modify the xattrs,
no harm is done by this phase. It tries to do unlocks and the unlocks will fail
because the locks are never taken in data domain. mount-1 also unlocks
self-heal domain locks.
Our beloved mount-2 now gets the chance to cause horror :-(.
5) mount-2 gets the full range blocking lock in self-heal domain.
Please note that this sets lk_attempted_count to 2.
6) mount-2 attempts full range lock in data domain, since there are still
writes on going, it switches to blocking mode. But since lk_attempted_count is 2
which is same as lk_expected_count, blocking phase locks thinks it actually got
the full range locks even though not a single lock request went out the wire.
7) mount-2 reads the change-log xattrs, which would give the number of operations
in progress (lets call this 'X'). It does the syncing and at the end of the sync
decrements the changelog by 'X'. But since that 'X' was introduced by 'X' number
of transactions that are in progress, they also decrement the changelog by 'X'.
Effectively for 'X' operations 'X' number of pre-ops are done but 2 times 'X'
number of post-ops are done resulting in -ve changelog numbers.
Fix:
Reset the lk_attempted_count and inode locks array that is used to remember locks
that are granted.
Change-Id: Ic0a79cd16f32392ea7c790511343c73592bbe6bd
BUG: 1002698
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/5736
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Else this results in a missing frame causing a hang
Change-Id: Ib5f3dc6a3999449faa2853cee2944af2fb065a20
BUG: 1002399
Signed-off-by: Anand Avati <avati@redhat.com>
Reviewed-on: http://review.gluster.org/5731
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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- afr_local_copy should not be memduping locked nodes, that would
mean that lock is taken in self-heal on those nodes even before
it actually takes the lock. So removed memdup code. Even entry
lock related copying (lockee info) is also not necessary for
self-heal functionality, so removing that as well. Since it is
not local_copy anymore changed its name.
- My editor changed tabs to spaces.
Change-Id: I8dfb92cb8338e9a967c06907a8e29a8404782d61
BUG: 967717
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/5099
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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Problem:
When taking blocking entrylks, afr orders the entrylks based on
uuid_compare of gfids of parent dirs, if they are equal then it orders
them based on the basenames. While this approach works fine, the
implementation assumes loc->gfids to be populated at the time of
the comparison, but loc may have gfid in loc->inode->gfid instead
of loc->gfid which was leading to order mismatches and dead-locks.
Fix:
Implemented loc_gfid which gives gfid by checking both loc->gfid,
loc->inode->gfid. Used this for ordering the blocking entrylks.
Change-Id: Ib0db36bbaf0df09fa87c3c3bb6a834db74fc2154
BUG: 965987
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/5062
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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Before Anonymous fds are available, afr had to queue up
transactions if the file is not opened on one of its
subvolumes. This happens until the attempt to open the
file either succeeds or fails. These attempts happen
until the file is successfully opened on the subvolume.
Now client xlator uses anonymous fds to perform the fops
if the fd used for the fop is not 'opened'.
Fops will be successful even when the file is not opened
so there is no need to queue up the transactions anymore in afr.
Open is attempted on the subvolume where it is not
opened independent of the fop.
Change-Id: Id1a4b4ebe6f89f9efe8f6a8247918b91247d0819
BUG: 913051
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/4568
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Typically this lock was not needed in practice, but with
http://review.gluster.org/3842, this code gets executed in multiple
threads for different servers and we lose a count. This results in
leaked lock and a hang for a future transaction.
Change-Id: I377ed20e44f2a45cff522289dfef181f0653eca2
BUG: 765564
Signed-off-by: Anand Avati <avati@redhat.com>
Reviewed-on: http://review.gluster.org/4480
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
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Change-Id: I7049c0c64e36a9dfa4cc0e0b34de7ec111d2f6c1
BUG: 908302
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/4076
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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When one of the subvolume is down, then lock request is not attempted
on that subvolume and move on to the next subvolume.
/* skip over children that are down */
while ((child_index < priv->child_count)
&& !local->child_up[child_index])
child_index++;
In the above case if there are 2 subvolumes and 2nd subvolume is down (subvolume
1 from afr's view), then after attempting lock on 1st child (i.e subvolume 0)
child index is calculated to be 1. But since the 2nd child is down child_index
is incremented to 2 as per the above logic and lock request is STACK_WINDed to
the child with child_index 2. Since there are only 2 children for afr the child
(i.e the xlator_t pointer) for child_index will be NULL. The process crashes
when it dereference the NULL xlator object.
Change-Id: Icd9b5ad28bac1b805e6e80d53c12d296526bedf5
BUG: 765564
Signed-off-by: Raghavendra Bhat <raghavendra@redhat.com>
Reviewed-on: http://review.gluster.org/4438
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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entrylk
when the expected lock count is equal to the attempted lock count, then before
deciding that lock is failed on all the nodes, make sure the lock type is
checked properly.
Change-Id: I1f362d54320cb6ec5654c5c69915c0f61c91d8c7
BUG: 765564
Signed-off-by: Raghavendra Bhat <raghavendra@redhat.com>
Reviewed-on: http://review.gluster.org/4436
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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As of http://review.gluster.org/2828, the blocking lock code
path's condition for checking completion of locking atempt is
broken. The condition -
if ((child_index == priv->child_count) || ...)
and
if ((child_index == priv->child_count) && ...)
which is retained to check completion of blocking lock attempts
for DATA/METADATA transaction will _always_ fail because a few
lines above we have -
child_index = cookie % priv->child_count;
So child_index will never equal priv->child_count. This leaves
the correctness at the mercy of the next part of the
conditional -
.. (int_lock->lock_count == int_lock->lk_expected_count) ..
This "works" as long as no server went down during the transaction.
If a server goes down in the middle of the transaction, then this
condition also fails, and the code wraps around and starts a
blocking lock attempt loop all the way again from from the first server.
This results in double locks getting acquired on those servers, and
eventually the second condition gets hit (first condition is _never_
hit) and we come out of locking phase.
During unlock phase we perform only one unlock per server leaving the
other lock "leaked" forever.
Change-Id: I7189cdf3f70901b04647516fe1d1e189f36cc8dd
BUG: 765564
Signed-off-by: Anand Avati <avati@redhat.com>
Reviewed-on: http://review.gluster.org/4433
Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
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* There are upto 3 entry lockees that may be needed to perform
entrylk'ing in posix dir-write operations.
* For eg, rmdir ("/a/b") needs to acquire locks on two entities,
- entrylk ("/a", "b")
- entrylk ("/a/b", null)
* Changed existing entrylk/rename/selfheal (entrylk) transactions
to use the new book-keeping structures
* Fixed few issues in afr_trace_entry_lk{in,out} functions. Tracing is now
aware of the new entry lockee structure.
Implementation notes:
* Changed 'cookie' sent in stack_wind to encode lockee_entity_no
and subvol_no.
cookie is a non-negative integer such that 0 <= cookie < replica_count,
When more than one lock is being acquired across the subvolumes,
cookie % replica_count gives the subvol_no
cookie / replica_count gives the lockee_entity_no.
Change-Id: Idbf41803387a7d59a0f7fcb1453d91cea74da153
BUG: 765564
Signed-off-by: Krishnan Parthasarathi <kp@gluster.com>
Reviewed-on: http://review.gluster.org/2828
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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post-op-delay introduces an artificial delay between the OP and
POST-OP-CHANGELOG phases of a write transaction to increase the
probability of changelog-piggyback and eager-locking to work
more efficiently.
Also enable eager-locking by default.
Change-Id: I865ca4b68512c44818719c7e388952f15d53e6c2
BUG: 836033
Signed-off-by: Anand Avati <avati@redhat.com>
Reviewed-on: http://review.gluster.com/3621
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Pranith Kumar Karampuri <pranithk@gluster.com>
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Historically PID (frame->root->pid) was used by the locks translator
to identify a locker (and make decisions about which locks contend
or cooperate/merge). Since the introduction of lock_owner parameter
the usage of PID (for locks) was deprecated and is now unused. This
patch nukes the usage of PID in AFR
The usage of lk_owner has also ended up being a mess, because of the
differentiation required between ->lk() and ->inodelk(), (->lk() needs
to be identified by the process (roughly) and ->inodelk() needs to be
identified by the transaction) and also because of optimizations like
eager locking (locks are no more identified by the transaction as they
now get inherited by the next transaction).
The scheme (and technique) now is:
- All FOPs (the third phase of the transaction) happen with the lk_owner
which is set by the topmost layer (FUSE, NFS etc.)
- All entrylks are issued with lk_owner set to the frame->root address.
- Inodelks which will not be subject to eager locking are issued with
lk_owner set to frame->root.
- Inodelks which are subject to eager locking are issued with lk_owner
set to the address of fd_t (which are the only type of frames which
get subject to the eager locking optimization)
- At the start of the transaction, the transaction frame's lk_owner is
set to the either frame->root or fd_t (and never unmodified) depending
on the type of transaction.
- Just before the third phase (FOP phase) the set lk_owner is "saved"
away and overwritten by the lk_owner submitted by the top layer (FUSE
or NFS)
- Right after the third phase, the saved lk_owner is "restored" to resume
the transaction into the POST-OP and eventually UNLOCK using the same
lk_owner which was used during the LOCK phase.
Change-Id: I6ab8e4d6b65ae4185fa85ad3fded8e9188b2f929
BUG: 836033
Signed-off-by: Anand Avati <avati@redhat.com>
Reviewed-on: http://review.gluster.com/3620
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Pranith Kumar Karampuri <pranithk@gluster.com>
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BUG: 823255
Change-Id: Ic6ad33518ea42c9518a21381518bd4f4afdd87cb
Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Reviewed-on: http://review.gluster.com/3382
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Note that the license was not changed in any of the following:
.../argp-standalone/...
.../booster/...
.../cli/...
.../contrib/...
.../extras/...
.../glusterfsd/...
.../glusterfs-hadoop/...
.../mod_clusterfs/...
.../scheduler/...
.../swift/...
The license was not changed in any of the non-building xlators. The
license was not changed in any of the xlators that seemed — to me — to
be clearly server-side only, e.g. protocol/server
Note too that copyright was changed along with the license; I did
not change the copyright in files where the license did not change.
If you find any errors or ommissions please don't hesitate to let me know.
The complete list of files with the license change is:
libglusterfs/src/byte-order.h
libglusterfs/src/call-stub.c
libglusterfs/src/call-stub.h
libglusterfs/src/checksum.c
libglusterfs/src/checksum.h
libglusterfs/src/circ-buff.c
libglusterfs/src/circ-buff.h
libglusterfs/src/common-utils.c
libglusterfs/src/common-utils.h
libglusterfs/src/compat-errno.c
libglusterfs/src/compat-errno.h
libglusterfs/src/compat.c
libglusterfs/src/compat.h
libglusterfs/src/daemon.c
libglusterfs/src/daemon.h
libglusterfs/src/defaults.c
libglusterfs/src/defaults.h
libglusterfs/src/dict.c
libglusterfs/src/dict.h
libglusterfs/src/event-history.c
libglusterfs/src/event-history.h
libglusterfs/src/event.c
libglusterfs/src/event.h
libglusterfs/src/fd-lk.c
libglusterfs/src/fd-lk.h
libglusterfs/src/fd.c
libglusterfs/src/fd.h
libglusterfs/src/gf-dirent.c
libglusterfs/src/gf-dirent.h
libglusterfs/src/globals.c
libglusterfs/src/globals.h
libglusterfs/src/glusterfs.h
libglusterfs/src/graph-print.c
libglusterfs/src/graph-utils.h
libglusterfs/src/graph.c
libglusterfs/src/hashfn.c
libglusterfs/src/hashfn.h
libglusterfs/src/iatt.h
libglusterfs/src/inode.c
libglusterfs/src/inode.h
libglusterfs/src/iobuf.c
libglusterfs/src/iobuf.h
libglusterfs/src/latency.c
libglusterfs/src/latency.h
libglusterfs/src/list.h
libglusterfs/src/lkowner.h
libglusterfs/src/locking.h
libglusterfs/src/logging.c
libglusterfs/src/logging.h
libglusterfs/src/mem-pool.c
libglusterfs/src/mem-pool.h
libglusterfs/src/mem-types.h
libglusterfs/src/options.c
libglusterfs/src/options.h
libglusterfs/src/rbthash.c
libglusterfs/src/rbthash.h
libglusterfs/src/run.c
libglusterfs/src/run.h
libglusterfs/src/scheduler.c
libglusterfs/src/scheduler.h
libglusterfs/src/stack.c
libglusterfs/src/stack.h
libglusterfs/src/statedump.c
libglusterfs/src/statedump.h
libglusterfs/src/syncop.c
libglusterfs/src/syncop.h
libglusterfs/src/syscall.c
libglusterfs/src/syscall.h
libglusterfs/src/timer.c
libglusterfs/src/timer.h
libglusterfs/src/trie.c
libglusterfs/src/trie.h
libglusterfs/src/xlator.c
libglusterfs/src/xlator.h
libglusterfsclient/src/libglusterfsclient-dentry.c
libglusterfsclient/src/libglusterfsclient-internals.h
libglusterfsclient/src/libglusterfsclient.c
libglusterfsclient/src/libglusterfsclient.h
rpc/rpc-lib/src/auth-glusterfs.c
rpc/rpc-lib/src/auth-null.c
rpc/rpc-lib/src/auth-unix.c
rpc/rpc-lib/src/protocol-common.h
rpc/rpc-lib/src/rpc-clnt.c
rpc/rpc-lib/src/rpc-clnt.h
rpc/rpc-lib/src/rpc-transport.c
rpc/rpc-lib/src/rpc-transport.h
rpc/rpc-lib/src/rpcsvc-auth.c
rpc/rpc-lib/src/rpcsvc-common.h
rpc/rpc-lib/src/rpcsvc.c
rpc/rpc-lib/src/rpcsvc.h
rpc/rpc-lib/src/xdr-common.h
rpc/rpc-lib/src/xdr-rpc.c
rpc/rpc-lib/src/xdr-rpc.h
rpc/rpc-lib/src/xdr-rpcclnt.c
rpc/rpc-lib/src/xdr-rpcclnt.h
rpc/rpc-transport/rdma/src/name.c
rpc/rpc-transport/rdma/src/name.h
rpc/rpc-transport/rdma/src/rdma.c
rpc/rpc-transport/rdma/src/rdma.h
rpc/rpc-transport/socket/src/name.c
rpc/rpc-transport/socket/src/name.h
rpc/rpc-transport/socket/src/socket.c
rpc/rpc-transport/socket/src/socket.h
xlators/cluster/afr/src/afr-common.c
xlators/cluster/afr/src/afr-dir-read.c
xlators/cluster/afr/src/afr-dir-read.h
xlators/cluster/afr/src/afr-dir-write.c
xlators/cluster/afr/src/afr-dir-write.h
xlators/cluster/afr/src/afr-inode-read.c
xlators/cluster/afr/src/afr-inode-read.h
xlators/cluster/afr/src/afr-inode-write.c
xlators/cluster/afr/src/afr-inode-write.h
xlators/cluster/afr/src/afr-lk-common.c
xlators/cluster/afr/src/afr-mem-types.h
xlators/cluster/afr/src/afr-open.c
xlators/cluster/afr/src/afr-self-heal-algorithm.c
xlators/cluster/afr/src/afr-self-heal-algorithm.h
xlators/cluster/afr/src/afr-self-heal-common.c
xlators/cluster/afr/src/afr-self-heal-common.h
xlators/cluster/afr/src/afr-self-heal-data.c
xlators/cluster/afr/src/afr-self-heal-entry.c
xlators/cluster/afr/src/afr-self-heal-metadata.c
xlators/cluster/afr/src/afr-self-heal.h
xlators/cluster/afr/src/afr-self-heald.c
xlators/cluster/afr/src/afr-self-heald.h
xlators/cluster/afr/src/afr-transaction.c
xlators/cluster/afr/src/afr-transaction.h
xlators/cluster/afr/src/afr.c
xlators/cluster/afr/src/afr.h
xlators/cluster/afr/src/pump.c
xlators/cluster/afr/src/pump.h
xlators/cluster/dht/src/dht-common.c
xlators/cluster/dht/src/dht-common.h
xlators/cluster/dht/src/dht-diskusage.c
xlators/cluster/dht/src/dht-hashfn.c
xlators/cluster/dht/src/dht-helper.c
xlators/cluster/dht/src/dht-inode-read.c
xlators/cluster/dht/src/dht-inode-write.c
xlators/cluster/dht/src/dht-layout.c
xlators/cluster/dht/src/dht-linkfile.c
xlators/cluster/dht/src/dht-mem-types.h
xlators/cluster/dht/src/dht-rebalance.c
xlators/cluster/dht/src/dht-rename.c
xlators/cluster/dht/src/dht-selfheal.c
xlators/cluster/dht/src/dht.c
xlators/cluster/dht/src/nufa.c
xlators/cluster/dht/src/switch.c
xlators/cluster/stripe/src/stripe-helpers.c
xlators/cluster/stripe/src/stripe-mem-types.h
xlators/cluster/stripe/src/stripe.c
xlators/cluster/stripe/src/stripe.h
xlators/features/index/src/index-mem-types.h ¹
xlators/features/index/src/index.c ¹
xlators/features/index/src/index.h ¹
xlators/performance/io-cache/src/io-cache.c
xlators/performance/io-cache/src/io-cache.h
xlators/performance/io-cache/src/ioc-inode.c
xlators/performance/io-cache/src/ioc-mem-types.h
xlators/performance/io-cache/src/page.c
xlators/performance/io-threads/src/io-threads.c
xlators/performance/io-threads/src/io-threads.h
xlators/performance/io-threads/src/iot-mem-types.h
xlators/performance/md-cache/src/md-cache-mem-types.h
xlators/performance/md-cache/src/md-cache.c
xlators/performance/quick-read/src/quick-read-mem-types.h
xlators/performance/quick-read/src/quick-read.c
xlators/performance/quick-read/src/quick-read.h
xlators/performance/read-ahead/src/page.c
xlators/performance/read-ahead/src/read-ahead-mem-types.h
xlators/performance/read-ahead/src/read-ahead.c
xlators/performance/read-ahead/src/read-ahead.h
xlators/performance/symlink-cache/src/symlink-cache.c
xlators/performance/write-behind/src/write-behind-mem-types.h
xlators/performance/write-behind/src/write-behind.c
xlators/protocol/auth/addr/src/addr.c ¹
xlators/protocol/auth/login/src/login.c ¹
xlators/protocol/client/src/client-callback.c
xlators/protocol/client/src/client-handshake.c
xlators/protocol/client/src/client-helpers.c
xlators/protocol/client/src/client-lk.c
xlators/protocol/client/src/client-mem-types.h
xlators/protocol/client/src/client.c
xlators/protocol/client/src/client.h
xlators/protocol/client/src/client3_1-fops.c
¹ Copyright only, license reverted to original
Change-Id: If560e826c61b6b26f8b9af7bed6e4bcbaeba31a8
BUG: 820551
Signed-off-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Reviewed-on: http://review.gluster.com/3304
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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Change-Id: Icc983effcf1b6283410a162f260755e97d41ee65
BUG: 810502
Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Reviewed-on: http://review.gluster.com/3228
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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Lk-owner of posix-lk and flush should be same, flush can't clear
posix-lks without that lk-owner.
Change-Id: If775abb5741a0beb00c419b54d023fbd429e3cb7
BUG: 810502
Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Reviewed-on: http://review.gluster.com/3221
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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Change-Id: I6d96c1aed4bf08b90b6918e3694c688eccdc2445
BUG: 818578
Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Reviewed-on: http://review.gluster.com/3270
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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with this change, the xlator APIs will have a dictionary as extra
argument, which is passed between all the layers. This can be
utilized for overloading in some of the operations.
Change-Id: I58a8186b3ef647650280e63f3e5e9b9de7827b40
Signed-off-by: Amar Tumballi <amarts@redhat.com>
BUG: 782265
Reviewed-on: http://review.gluster.com/2960
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Statedump will now start showing the lk-owner of the stack.
Change-Id: I9f650ce9a8b528cd626c8bb595c1bd1050462c86
BUG: 803209
Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Reviewed-on: http://review.gluster.com/2968
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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Eager-lock is disabled by default.
Use cluster.eager-lock on/off to change the config.
write-behind on and eager-lock off is not supported configuration.
In afr, when eager-lock is enabled the inode lock on fd is taken
using the fd address as the lk-owner. So the lock is
interchangableale between the inode-locks on the same fd.
Change-Id: I7eef1ecd510f8028f5395dee882782da53c0de3f
BUG: 802515
Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Reviewed-on: http://review.gluster.com/2925
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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'enclosed' fop."
This reverts commit 2e80fdbeb6abbb23ff6789c2b98c82704883af0a.
Change-Id: I417fd43e4195d63e5b8b83dd3beb712887130e1e
Reviewed-on: http://review.gluster.com/2860
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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BUG: 787671
Change-Id: I0b01b0f9e14a26d757748413dd71909e915c7573
Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Reviewed-on: http://review.gluster.com/2826
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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afr 'mangles' the lkowner inorder to ensure [f]inodelk/[f]entrylk fops from the
same application contend. But other fops that are 'visible' to the application
should operate with the lkowner provided by fuse for correct functioning of
posix-locks xlator.
Change-Id: I7e71f35ae7df2a070f1f46d4fc77eed26a717673
BUG: 790743
Signed-off-by: Krishnan Parthasarathi <kp@gluster.com>
Reviewed-on: http://review.gluster.com/2752
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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in each translator, which uses 'frame->local', we are using
GF_CALLOC/GF_FREE, which would be costly considering the
number of allocation happening in a lifetime of 'fop'. It
would be good to utilize the mem pool framework for xlator's
local structures, so there is no allocation overhead.
Change-Id: Ida6e65039a24d9c219b380aa1c3559f36046dc94
Signed-off-by: Amar Tumballi <amar@gluster.com>
BUG: 765336
Reviewed-on: http://review.gluster.com/2772
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>
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so, NLM can send the lk-owner field directly to the locks translators,
while doing the same effort, also enabled sending maximum of 500 aux gid
over protocol.
Change-Id: I87c2514392748416f7ffe21d5154faad2e413969
Signed-off-by: Amar Tumballi <amar@gluster.com>
BUG: 767229
Reviewed-on: http://review.gluster.com/779
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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- Fop should unwind with appropriate errno
- Local is de-allocated on errors
Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Change-Id: I4db40342ae184fe1cc29e51072e8fea72ef2cb15
BUG: 770513
Reviewed-on: http://review.gluster.com/2539
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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Change-Id: I0d87f06f989b2d4b971967c52d4898331693a801
BUG: 3675
Reviewed-on: http://review.gluster.com/735
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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in the entire glusterfs codebase.
This patch fixes many of spell mistakes and typo in the entire
glusterfs codebase and all supported modules.
Change-Id: I83238a41aa08118df3cf4d1d605505dd3cda35a1
BUG: 3809
Signed-off-by: Harshavardhana <fharshav@redhat.com>
Reviewed-on: http://review.gluster.com/731
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amar@gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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with this patch, there are no more warnings with gcc (GCC) 4.6.1 20110908
Change-Id: Ice0d52d304b9846395f8a4a191c98eb53125f792
BUG: 2550
Reviewed-on: http://review.gluster.com/607
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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Used a #pragma to kill ~170 in rpcgen code. Added GF_UNUSED to deal with
a few more from macros elsewhere. The remainder are function return values
(mostly context and dict calls) that really should be checked. Those would
be harder to fix without real understanding of the code where they occur,
so they remain as reminders.
(Patchset 2: deal with older gcc that doesn't handle #pragma GCC diagnostic)
(Patchset 3: fix include paths in generated files)
(Patchset 4: keep up with trunk, squash 9 new warnings)
(Patchset 5: six more, all in AFR)
Change-Id: I29760c8c81be4d7e6489312c5d0e92cc24814b7b
BUG: 2550
Reviewed-on: http://review.gluster.com/378
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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Afr transaction performs lock, pre-op, op, post-op and unlock steps in that
order. The child_up[] is overloaded with the information of where all
the first two steps succeeded. This works perfectly fine for
Transaction, but the locking/unlocking part of the code is re-used by
data self-heal. In that each loop_frame does lock, rchecksum,
read-from-source and write-to-sinks, unlock steps.
Rchecksum fop assumes that the fop needs to happen on one source + all
sinks and sets the call_count to that number. But if the lock step fails
on any of the sinks it will mark the child_up of that child to 0, which
will result in call_count mismatch and the frame will hang thinking that
some more cbks need to come. When this happens loop_frame will never go
to unlock step leading to hangs on that file.
Change-Id: I3dd0449cc6193a980bacf637d935881f4b22210a
BUG: 3597
Reviewed-on: http://review.gluster.com/474
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Amar Tumballi <amar@gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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This patch is a change in the way write transactions hold a lock
which optimizes the case of sequential writes from a single writer.
Lock phase of a transaction has two sub-phases. First is an attempt
to acquire locks in parallel by broadcasting non-blocking lock
requests. If lock aquistion fails on any server, then the held locks
are unlocked and revert to a blocking locked mode sequentially on
one server after another.
The change in this patch is to make the initial broadcasting lock
request attempt to acquire lock on the entire file. If this fails,
we revert back to the sequential "regional" blocking lock as before.
In the case where such an "eager" lock is granted in the non-blocking
phase, it gives rise to an opportunity for optimization. i.e, if
the next write transaction on the same FD arrives before the unlock
phase of the first transaction, it "takes over" the full file lock.
Similarly if yet another transaction arrives before the unlock phase
of the "optimized" transaction, that in turn "takes over" the lock
as well. The actual unlock now happens at the end of the last
"optimzed" transaction.
Any operation which arrives before the unlock phase of the previous
transaction is a potential candidate to become an "optimized"
transaction. In cases where the previous transaction had aquired
lock as a "regional" blocking lock, and the next transaction comes
in before its unlock phase, then it would not be an "optimized"
transaction.
Implied assumption
------------------
Since two or more transactions can now operate within the same
large lock, there is a possibility that overlapping transactions
can arrive at oppoosite orders on the servers. However in the
larger picture this is not possible as write-behind already
ensures that no two overlapping writes on an inode are in transit
at the same time. Overlapping writes across clients are not a
problem as they compete at locks anyways.
Theoretical benefits and potential harms
----------------------------------------
In case of a single writer: The benefits are large for sequential
writes. In the best case the entire file write can happen with just
one lock and unlock per server, provided writes are coming in fast
enough and getting pipelined by write-behind soon enough (which is
usually the case). If the writes are not coming in fast enough, then
the optimization "kicks in" for only those subsets of writes which
are close enough to get "piggybacked". For random writes the benefits
are the same as well. In any case the overall performance is better
than or equal to the performance without this optimization for a single
writer.
In case of multiple writers: When multiple writers are not writing
concurrently, there is no negative performance impact. When multiple
writers are writing concurrently to the same region, there is no
negative impact either, as they were previously getting arbitrated
at the locks translator too. In the case of multiple writers writing
to different regions concurrently, there will be an increased number
of "failovers" from failed parallel non-blocking to sequential blocking
regional locks. This above "worst case" has a simple workaround that
as soon as we detect > 1 open-fd-count in lookup xattr, we can disable
this optimization on those fds.
Beneficial side-effects
-----------------------
There is another similar optimization in AFR for changelogs which goes
by the name of "changelog-piggybacking". That works in a similar way where
pending flags get 'taken over' or 'piggybacked' by the next transaction
if its 'pre-op' phase kicks in before the 'post-op' phase of the
previous transaction. It has been observed that this changelog-piggybacking
optimization gives a saving of about ~55% savings of xattr calls hitting
the wire, measured across various types of network interfaces. The side
effect of this eager-lock optimization is that it gives an almost 100%
saving of xattr calls by making the optimistic-changelog work much more
efficiently as it gives a wider overlap of the xattr phases of two
consecutive transactions.
Change-Id: I41c02eb3b64c14c68ef66a344610ec3f024cd59d
BUG: 3409
Reviewed-on: http://review.gluster.com/240
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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This fixes ~200 such warnings, but leaves three categories untouched.
(1) Rpcgen code.
(2) Macros which set variables in the outer (calling function) scope.
(3) Variables which are set via function calls which may have side effects.
Change-Id: I6554555f78ed26134251504b038da7e94adacbcd
BUG: 2550
Reviewed-on: http://review.gluster.com/371
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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Change-Id: I206571c77f2d7b3c9f9d7bb82a936366fd99ce5c
BUG: 3182
Reviewed-on: http://review.gluster.com/141
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>
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Change-Id: I2d10f2be44f518f496427f257988f1858e888084
BUG: 3348
Reviewed-on: http://review.gluster.com/200
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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Change-Id: I3914467611e573cccee0d22df93920cf1b2eb79f
BUG: 3348
Reviewed-on: http://review.gluster.com/182
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@gluster.com>
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Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Signed-off-by: Anand Avati <avati@gluster.com>
BUG: 3182 (Afr self-heal should happen with out big lock)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=3182
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If locks could not be held on any of the servers, then propagate the
errno returned by the lock FOPs instead of hardcoding EAGAIN/EINVAL.
Signed-off-by: Anand Avati <avati@gluster.com>
BUG: 2993 ([glusterfs-3.2.0qa2]: hang while doing the selfheal)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2993
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Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Signed-off-by: Anand Avati <avati@gluster.com>
BUG: 2986 (Failed operations should should be logged `E' or `W')
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2986
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Signed-off-by: Pranith Kumar K <pranithk@gluster.com>
Signed-off-by: Anand Avati <avati@gluster.com>
BUG: 2949 (self-heal hangs)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2949
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instead used GF_LOG_INFO, which is more standard log level.
Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Vijay Bellur <vijay@gluster.com>
BUG: 2669 (RuntimeError: cannot recognize log level "normal")
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2669
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Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 2346 (Log message enhancements in GlusterFS - phase 1)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2346
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Signed-off-by: Amar Tumballi <amar@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 2346 (Log message enhancements in GlusterFS - phase 1)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2346
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invocation of gf_log.
Signed-off-by: Raghavendra G <raghavendra@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 2211 ((re)introduce warnings for format string/parameter mismatch)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=2211
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Signed-off-by: Raghavendra Bhat <raghavendrabhat@gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 865 (Add locks recovery support in GlusterFS)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=865
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nonblocking style locking would result in a missing frame when all
subvolumes are down or when no subvolume on which fd was opened
is up. Check for this condition and unlock gracefully
Signed-off-by: Anand V. Avati <avati@blackhole.gluster.com>
Signed-off-by: Anand V. Avati <avati@dev.gluster.com>
BUG: 918 (AFR write fails when subvolumes' state is swapped)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=918
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Signed-off-by: Vijay Bellur <vijay@gluster.com>
Signed-off-by: Vijay Bellur <vijay@dev.gluster.com>
BUG: 971 (dynamic volume management)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=971
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