glusterfs.git/xlators/features/snapview-server/src/snapview-server-helpers.c, branch v3.8dev

snapshot: correct error message in snapshot helper

2015-04-08T18:01:33+00:00

Change-Id: Ic01a5d4115383f1245bae3fba2bf92e23c8213ff
BUG: 1194640
Signed-off-by: Humble Devassy Chirammal 
Reviewed-on: http://review.gluster.org/9747
Reviewed-by: Shyamsundar Ranganathan 
Tested-by: Gluster Build System 
Reviewed-by: Kaleb KEITHLEY 
Reviewed-by: Niels de Vos

Avoid conflict between contrib/uuid and system uuid

2015-04-04T17:48:35+00:00

glusterfs relies on Linux uuid implementation, which
API is incompatible with most other systems's uuid. As
a result, libglusterfs has to embed contrib/uuid,
which is the Linux implementation, on non Linux systems.
This implementation is incompatible with systtem's
built in, but the symbols have the same names.

Usually this is not a problem because when we link
with -lglusterfs, libc's symbols are trumped. However
there is a problem when a program not linked with
-lglusterfs will dlopen() glusterfs component. In
such a case, libc's uuid implementation is already
loaded in the calling program, and it will be used
instead of libglusterfs's implementation, causing
crashes.

A possible workaround is to use pre-load libglusterfs
in the calling program (using LD_PRELOAD on NetBSD for
instance), but such a mechanism is not portable, nor
is it flexible. A much better approach is to rename
libglusterfs's uuid_* functions to gf_uuid_* to avoid
any possible conflict. This is what this change attempts.

BUG: 1206587
Change-Id: I9ccd3e13afed1c7fc18508e92c7beb0f5d49f31a
Signed-off-by: Emmanuel Dreyfus 
Reviewed-on: http://review.gluster.org/10017
Tested-by: Gluster Build System 
Reviewed-by: Niels de Vos

uss/gluster: Send success on parent lookup of entry-point

2014-12-05T11:22:20+00:00

When a lookup sent to snapview-server for entry-point directory
protocol server first tries to resolve gfid of a parent directory.

looking up the parent gfid from a latest snapshot can fail if the
volume is a restored volume. As this gfid is already looked-up by
snapview-client, we can return success for the parent gfid.

Change-Id: Ic9b20561ef79b93032f07c3a81eae54a94e1747b
BUG: 1162498
Signed-off-by: vmallika 
Reviewed-on: http://review.gluster.org/9229
Tested-by: Gluster Build System 
Reviewed-by: Raghavendra Bhat 
Reviewed-by: Rajesh Joseph 
Reviewed-by: Vijay Bellur

uss: CIFS gives error while accessing .snaps directory

2014-12-03T14:47:24+00:00

CIFS sends getxattr call while accessing .snaps directory.
snapview server should return ENODATA if getxattr is called
on .snaps folder. Also flush on .snaps folder should be handled.

Windows client sends and getxattr call on the parent folder
of .snaps with a special key to get the real filename of a file.
This is used by samba to do case insensitive check of files.

Fixed few FreeBSD compilation error.

bug: 1168875

Change-Id: I74d5cb4419568c8ed8709ba6d1ddff0e41392204
Signed-off-by: Rajesh Joseph 
Reviewed-on: http://review.gluster.org/9211
Reviewed-by: Raghavendra Bhat 
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

uss/gluster: creating file/directories inside .snaps should fail with

2014-11-13T14:55:11+00:00

EROFS

When an attempt is made to create file/directories inside .snaps, it
fails with wrong error message as "Stale file handle". It should fail
with "Read-only file system"

Change-Id: I3a812a0afc4762cbb71ab180b9394c866e576a66
BUG: 1159840
Signed-off-by: vmallika 
Reviewed-on: http://review.gluster.org/9039
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur

uss/gluster: Move all uss related logs into subfolder

2014-11-12T11:23:59+00:00

For USS we have 1 snapd log per volume and as many snap logs for volume.
For example if there are 4 volumes having 256 snaps each and USS is
enabled than total number of logs under /var/log/glusterfs for USS would
be 1028 logs.

Total logs = (4(snapd per volume) + 4(volumes)*256(snaps)) = 1028

Hence, it makes sense to move into into sub-folder structure like

/var/log/glusterfs/snaps//

Change-Id: I29262e6458c3906916923cd67d1145d6ae10bec3
BUG: 1160534
Signed-off-by: vmallika 
Reviewed-on: http://review.gluster.org/9050
Tested-by: Gluster Build System 
Reviewed-by: Rajesh Joseph 
Reviewed-by: Krishnan Parthasarathi 
Tested-by: Krishnan Parthasarathi

USS : Display only the activated snapshots

2014-11-12T11:20:10+00:00

Instead of displaying all the snapshots in the uss world,
it is better if we display only the activated snapshots.

Change-Id: I70d3ec212b62ec15956ae3e826bc4201d8dedd17
BUG: 1155042
Signed-off-by: Sachin Pandit 
Reviewed-on: http://review.gluster.org/8958
Tested-by: Gluster Build System 
Reviewed-by: Avra Sengupta 
Reviewed-by: Rajesh Joseph 
Reviewed-by: Krishnan Parthasarathi 
Tested-by: Krishnan Parthasarathi

snapview-server: register a callback with glusterd to get notifications

2014-09-08T14:14:19+00:00

* As of now snapview-server is polling (sending rpc requests to glusterd) to
  get the latest list of snapshots at some regular time intervals
  (non configurable). Instead of that register a callback with glusterd so that
  glusterd sends notifications to snapd whenever a snapshot is created/deleted
  and snapview-server can configure itself.

Change-Id: I17a274fd2ab487d030678f0077feb2b0f35e5896
BUG: 1119628
Signed-off-by: Raghavendra Bhat 
Reviewed-on: http://review.gluster.org/8150
Tested-by: Gluster Build System 
Reviewed-by: Vijay Bellur