glusterfs.git/xlators/cluster/afr/src/afr-open.c, branch release-7

multiple files: another attempt to remove includes

2019-06-14T16:50:32+00:00

There are many include statements that are not needed.
A previous more ambitious attempt failed because of *BSD plafrom
(see https://review.gluster.org/#/c/glusterfs/+/21929/ )

Now trying a more conservative reduction.
It does not solve all circular deps that we have, but it
does reduce some of them. There is just too much to handle
reasonably (dht-common.h includes dht-lock.h which includes
dht-common.h ...), but it does reduce the overall number of lines
of include we need to look at in the future to understand and fix
the mess later one.

Change-Id: I550cd001bdefb8be0fe67632f783c0ef6bee3f9f
updates: bz#1193929
Signed-off-by: Yaniv Kaul

cluster/afr: Add quorum checks to open & opendir fops

2019-03-08T04:03:08+00:00

Problem:
Currently even if open & opendir fails on quorum number of bricks,
but succeeds on atleast one brick, it will result in success. This leads
to inconsistency in the behaviour with other operations following the
open, which has quorum checks.

Fix:
Add quorum checks to open & opendir fops to avoid inconsistency.

Change-Id: If8fcb82072a6dc45ea6d4a6754b79763215eba2a
fixes: bz#1634664
Signed-off-by: karthik-us

libglusterfs: Move devel headers under glusterfs directory

2018-12-05T21:47:04+00:00

libglusterfs devel package headers are referenced in code using
include semantics for a program, this while it works can be better
especially when dealing with out of tree xlator builds or in
general out of tree devel package usage.

Towards this, the following changes are done,
- moved all devel headers under a glusterfs directory
- Included these headers using system header notation <> in all
code outside of libglusterfs
- Included these headers using own program notation "" within
libglusterfs

This change although big, is just moving around the headers and
making it correct when including these headers from other sources.

This helps us correctly include libglusterfs includes without
namespace conflicts.

Change-Id: Id2a98854e671a7ee5d73be44da5ba1a74252423b
Updates: bz#1193929
Signed-off-by: ShyamsundarR

afr: open_ftruncate_cbk should read fd from local->cont.open struct

2018-11-15T05:07:23+00:00

afr_open stores the fd as part of its local->cont.open struct
but when it calls ftruncate (if open flags contain O_TRUNC), the
corresponding cbk function (afr_ open_ftruncate_cbk) is
incorrectly referencing uninitialized local->fd. This patch fixes
the same.

Change-Id: Icbdedbd1b8cfea11d8f41b6e5c4cb4b44d989aba
updates: bz#1648687
Signed-off-by: Soumya Koduri

Land part 2 of clang-format changes

2018-09-12T12:22:45+00:00

Change-Id: Ia84cc24c8924e6d22d02ac15f611c10e26db99b4
Signed-off-by: Nigel Babu

afr: don't update readables if inode refresh failed on all children

2018-06-18T11:21:46+00:00

Problem:
If inode refresh failed on all children of afr due to ENOENT (say file
migrated by dht), it resets the readables to zero. Any inflight txn which
then later comes on the inode fails with EIO because no readable
children present for the inode.

Fix:
Don't update readables when inode refresh fails on *all* children of
afr. In that way any inflight txns will either proceed with its own inode
refresh if needed and fail it with the right errno or use the old value
of readables and continue with the txn.

Also, add quorum checks to the beginning of afr_transaction(). Otherwise, we
seem to be winding the lock and checking for quorum only in pre-op pahse.

Note: This should ideally fix BZ 1329505 since the stop gap fix for
it is has been reverted at https://review.gluster.org/#/c/20028.

Change-Id: Ia638c092d8d12dc27afb3cdad133394845061319
updates: bz#1584483
Signed-off-by: Ravishankar N

Coverity Issue: PW.INCLUDE_RECURSION in several files

2017-11-09T13:21:11+00:00

Coverity ID: 407, 408, 409, 410, 411, 412, 413, 414, 415, 416, 417,
418, 419, 423, 424, 425, 426, 427, 428, 429, 436, 437, 438, 439,
440, 441, 442, 443

Issue: Event include_recursion

Removed redundant, recursive includes from the files.

Change-Id: I920776b1fa089a2d4917ca722d0075a9239911a7
BUG: 789278
Signed-off-by: Girjesh Rajoria

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/afr: Give option to do consistent-io

2016-08-22T20:55:42+00:00

Problem:
When tiering/rebalance does migrations and afr with 2-way replica is in
picture, migration can read stale data if the source brick goes down and writes
to the destination. After this deletion of the file leads to permanent loss of
data after migration.

Fix:
Rebalance/tiering should migrate only when the data is definitely not stale. So
introduce an option in afr called consistent-io which will be enabled in
migration daemons.

BUG: 1306398
Change-Id: I750f65091cc70a3ed4bf3c12f83d0949af43920a
Signed-off-by: Pranith Kumar K 
Reviewed-on: http://review.gluster.org/13425
Reviewed-by: Anuradha Talur 
Reviewed-by: Krutika Dhananjay 
Smoke: Gluster Build System 
NetBSD-regression: NetBSD Build System 
CentOS-regression: Gluster Build System

afr: Porting messages to new logging framework

2015-06-27T12:25:05+00:00

     updated

Change-Id: I94ac7b2cb0d43a82cf0eeee21407cff9b575c458
BUG: 1194640
Signed-off-by: arao 
Signed-off-by: Mohamed Ashiq 
Reviewed-on: http://review.gluster.org/9897
Tested-by: Gluster Build System 
Tested-by: NetBSD Build System 
Reviewed-by: Pranith Kumar Karampuri