Problem : When a file is migrated, dht attempts to re-open all open
fds on the new cached subvol. Earlier, if dht had not opened the fd,
the client xlator would be unable to find the remote fd and would
fall back to using an anon fd for the fop. That behavior changed with
https://review.gluster.org/#/c/glusterfs/+/15804, causing fops to fail
with EBADFD if the fd was not available on the cached subvol.
The client xlator returns EBADFD if the remote fd is not found but
dht only checks for EBADF before re-opening fds on the new cached subvol.
Solution: Handle EBADFD at dht code path to avoid the issue
> Change-Id: I43c51995cdd48d05b12e4b2889c8dbe2bb2a72d8
> Fixes: bz#1758579
> (cherry picked from commit 9314a9fbf487614c736cf6c4c1b93078d37bb9df)
> (Reviewed on upstream link https://review.gluster.org/23518)
Change-Id: I43c51995cdd48d05b12e4b2889c8dbe2bb2a72d8
Fixes: bz#1761910
After add-brick and rebalance, the ctime xattr is not present on rebalanced directories on new brick. This patch fixes the same. Note that ctime still doesn't support consistent time across distribute sub-volume. This patch also fixes the in-memory inconsistency of time attributes when metadata is self healed. Backport of: > Patch: https://review.gluster.org/23127/ > Change-Id: Ia20506f1839021bf61d4753191e7dc34b31bb2df > BUG: 1734026 > Signed-off-by: Kotresh HR <khiremat@redhat.com> (cherry picked from commit 304640e55c0f3c6d15f4e230dc6376e4f5020fea) Change-Id: Ia20506f1839021bf61d4753191e7dc34b31bb2df Signed-off-by: Kotresh HR <khiremat@redhat.com> fixes: bz#1752429
get_real_filename is implemented as a virtual extended attribute to help Samba implement the case-insensitive but case preserving SMB protocol more efficiently. It is implemented as a getxattr call on the parent directory with the virtual key of "get_real_filename:<entryname>" by looking for a spelling with different case for the provided file/dir name (<entryname>) and returning this correct spelling as a result if the entry is found. Originally (05aaec645a6262d431486eb5ac7cd702646cfcfb), the implementation used the ENOENT errno to return the authoritative answer that <entryname> does not exist in any case folding. Now this implementation is actually a violation or misuse of the defined API for the getxattr call which returns ENOENT for the case that the dir that the call is made against does not exist and ENOATTR (or the synonym ENODATA) for the case that the xattr does not exist. This was not a problem until the gluster fuse-bridge was changed to do map ENOENT to ESTALE in 59629f1da9dca670d5dcc6425f7f89b3e96b46bf, after which we the getxattr call for get_real_filename returned an ESTALE instead of ENOENT breaking the expectation in Samba. It is an independent problem that ESTALE should not leak out to user space but is intended to trigger retries between fuse and gluster. But nevertheless, the semantics seem to be incorrect here and should be changed. This patch changes the implementation of the get_real_filename virtual xattr to correctly return ENOATTR instead of ENOENT if the file/directory being looked up is not found. The Samba glusterfs_fuse vfs module which takes advantage of the get_real_filename over a fuse mount will receive a corresponding change to map ENOATTR to ENOENT. Without this change, it will still work correctly, but the performance optimization for nonexisting files is lost. On the other hand side, this change removes the distinction between the old not-implemented case and the implemented case. So Samba changed to treat ENOATTR like ENOENT will not work correctly any more against old servers that don't implement get_real_filename. I.e. existing files will be reported as non-existing Change-Id: I971b427ab8410636d5d201157d9af70e0d075b67 fixes: bz#1745914 Signed-off-by: Michael Adam <obnox@samba.org> (cherry picked from commit dc1b87fcfef08c9497b0c02b2410c9d18bbc2dba)
Some internal DHT xattrs were not being removed when calling getxattr in pass-through mode. This has been fixed. Change-Id: If7e3dbc7b495db88a566bd560888e3e9c167defa fixes: bz#1721435 Signed-off-by: N Balachandran <nbalacha@redhat.com>
dht-common.c: because there was a 'goto err' before assigning
the 'local' variable, there is possibility of NULL
dereference. As the check which was done wouldn't
ever be true, removed the check.
glusterd-geo-rep.c: a possible path where 'slave_host' could be
NULL when it gets passed to strcmp() is found.
strcmp() expects a valid string. Add a NULL check.
Updates: bz#1622665
Change-Id: I64c280bc1beac9a2b109e8fa88f2a5ce8b823c3a
Signed-off-by: Amar Tumballi <amarts@redhat.com>
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 <ykaul@redhat.com>
Fixed a bug in the revalidate code path that wiped out directory permissions if no mds subvol was found. Change-Id: I8b4239ffee7001493c59d4032a2d3062586ea115 fixes: bz#1716830 Signed-off-by: N Balachandran <nbalacha@redhat.com>
Part 2: Modify dht_revalidate_cbk to call dht_selfheal_directory instead of separate calls to heal attrs and xattrs. Change-Id: Id41ac6c4220c2c35484812bbfc6157fc3c86b142 updates: bz#1590385 Signed-off-by: N Balachandran <nbalacha@redhat.com>
Part 1: refactor the dht_lookup_dir_cbk and dht_selfheal_directory functions. Added a simple dht selfheal directory test Change-Id: I1410c26359e3c14b396adbe751937a52bd2fcff9 updates: bz#1590385 Signed-off-by: N Balachandran <nbalacha@redhat.com>
Function dht_common_mark_mdsxattr blindly setting value for an integer pointer without validating it. In fact there are two callers of this function that passes NULL value to the same pointer which leads to a crash. Change-Id: Id94ffe216f6a21f007b3291bff0b1e1c1989075c fixes: bz#1687811 Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com>