glusterfs.git/xlators/cluster, branch v4.0dev1

xlator/tier: flood of -Wformat-truncation warnings with gcc-7.1

2017-11-01T13:31:13+00:00

Starting in Fedora 26 which has gcc-7.1.x, -Wformat-trunction is enabled
with -Wformat, resulting in a flood of new warnings. This many warnings
is a concern because it makes it hard(er) to see other warnings that
should be addressed.

An example is at
https://kojipkgs.fedoraproject.org//packages/glusterfs/3.12.0/1.fc28/data/logs/x86_64/build.log

For more info see https://review.gluster.org/#/c/18267/

Change-Id: Id7ef8e0dedd28ada55f72c03d91facbe1c9888bd
BUG: 1492849
Signed-off-by: Kaleb S. KEITHLEY

cluster/ec: FORWARD_NULL coverity fix

2017-11-01T13:29:05+00:00

Problem: frame could be NULL.

Solution: Added check to verify frame.

BUG: 789278
Change-Id: I55a64c936ae71ec8587a3f9dfa0fdee5d0ea5213
Signed-off-by: Sunil Kumar Acharya

cluster/ec: FORWARD_NULL coverity fix

2017-11-01T13:28:51+00:00

Problem: cbk could be NULL.

Solution: Assigned appropriate value to cbk.

BUG: 789278
Change-Id: I2e4bba9a54f965c6a7bccf0b0cb6c5f75399f6e6
Signed-off-by: Sunil Kumar Acharya

cluster/ec: MISSING_BREAK coverity fix

2017-10-31T22:16:14+00:00

Problem: switch case syntax issue.

Solution: syntax fixed.

BUG: 789278
Change-Id: I76da72c3ab6ffc5db671686a71d6a596beaf496e
Signed-off-by: Sunil Kumar Acharya

cluster/afr: Honor default timeout of 5min for analyzing split-brain files

2017-10-30T15:57:13+00:00

Problem:
After setting split-brain-choice option to analyze the file to resolve
the split brain using the command
"setfattr -n replica.split-brain-choice -v "choiceX" "
should allow to access the file from mount for default timeout of 5mins.
But the timeout was not honored and was able to access the file even after
the timeout.

Fix:
Call the inode_invalidate() in afr_set_split_brain_choice_cbk() so that
it will triger the cache invalidate after resetting the timer and the
split brain choice. So the next calls to access the file will fail with EIO.

Change-Id: I698cb833676b22ff3e4c6daf8b883a0958f51a64
BUG: 1503519
Signed-off-by: karthik-us

cluster/afr: Fail open on split-brain

2017-10-26T18:23:35+00:00

Problem:
Append on a file with split-brain succeeds. Open is intercepted by open-behind,
when write comes on the file, open-behind does open+write. Open succeeds
because afr doesn't fail it. Then write succeeds because write-behind
intercepts it. Flush is also intercepted by write-behind, so the application
never gets to know that the write failed.

Fix:
Fail open on split-brain, so that when open-behind does open+write open fails
which leads to write failure. Application will know about this failure.

Change-Id: I4bff1c747c97bb2925d6987f4ced5f1ce75dbc15
BUG: 1294051
Signed-off-by: Pranith Kumar K

cluster/ec: Implement DISCARD FOP for EC

2017-10-25T11:52:41+00:00

Updates #254

This code change implements DISCARD FOP support for
EC.

BUG: 1461018
Change-Id: I09a9cb2aa9d91ec27add4f422dc9074af5b8b2db
Signed-off-by: Sunil Kumar Acharya

cluster/ec: Allow parallel writes in EC if possible

2017-10-24T09:30:25+00:00

Problem:
Ec at the moment sends one modification fop after another, so if some of
the disks become slow, for a while then the wait time for the writes that
are waiting in the queue becomes really bad.

Fix:
Allow parallel writes when possible. For this we need to make 3 changes.
1) Each fop now has range parameters they will be updating.
2) Xattrop is changed to handle parallel xattrop requests where some
   would be modifying just dirty xattr.
3) Fops that refer to size now take locks and update the locks.

Fixes #251
Change-Id: Ibc3c15372f91bbd6fb617f0d99399b3149fa64b2
Signed-off-by: Pranith Kumar K

cluster/dht: fix crash when deleting directories

2017-10-16T10:33:13+00:00

In DHT, after locks on all subvolumes are acquired, it would perform the
following steps sequentially,
1. send remove dir on all other subvolumes except the hashed one in a loop;
2. wait for all pending rmdir to be done
3. remove dir on the hashed subvolume

The problem is that in step 1 there is a check to skip hashed subvolume
in the loop. If the last subvolume to check is actually the
hashed one, and step 3 is quickly done before the last and hashed
subvolume is checked, by accessing shared context data be destroyed in
step 3, would cause a crash.

Fix by saving shared data in a local variable to access later in the
loop.

Change-Id: I8db7cf7cb262d74efcb58eb00f02ea37df4be4e2
BUG: 1490642
Signed-off-by: Zhang Huan

cluster/ec: Coverity Fix UNUSED_VALUE in ec_create_name

2017-10-16T08:17:59+00:00

Problem: The value returned by cluster_mkdir is assigned to ret at
ec-heal.c:1076. But this value is overwritten before it can be
used.

Solution: The return value of cluster_mkdir is ignored. It is not
assigned to ret.

Change-Id: Iee6b8d8b04e0bd800dd30d2c24cab755b9e63443
BUG: 789278
Signed-off-by: Kamal Mohanan