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| author | Niels de Vos <ndevos@redhat.com> | 2015-07-21 18:50:12 +0200 |
|---|---|---|
| committer | Kaleb KEITHLEY <kkeithle@redhat.com> | 2015-08-05 04:53:12 -0700 |
| commit | 64a5bf3749c67fcc00773a2716d0c7b61b0b4417 (patch) | |
| tree | 4dd5a36c66ca70f726427480a1a87c44803027a1 /doc | |
| parent | 28fc199d5dc92a69eb2b899bbea23548dc14a39b (diff) | |
fuse: add "resolve-gids" mount option to overcome 32-groups limit
Add a --resolve-gids commandline option to the glusterfs binary. This
option gets set when executing "mount -t glusterfs -o resolve-gids ...".
This option is most useful in combination with the "acl" mount option.
POSIX ACL permission checking is done on the FUSE-client side to improve
performance (in addition to the checking on the bricks).
The fuse-bridge reads /proc/$PID/status by default, and this file
contains maximum 32 groups. Any local (client-side) permission checking
that requires more than the first 32 groups will fail.
By enabling the "resolve-gids" option, the fuse-bridge will call
getgrouplist() to retrieve all the groups from the user accessing the
mountpoint. This is comparable to how "nfs.server-aux-gids" works.
Note that when a user belongs to more than ~93 groups, the volume option
server.manage-gids needs to be enabled too. Without this option, the
RPC-layer will need to reduce the number of groups to make them fit in
the RPC-header.
Change-Id: I7ede90d0e41bcf55755cced5747fa0fb1699edb2
BUG: 1246275
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Reviewed-on: http://review.gluster.org/11732
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Ravishankar N <ravishankar@redhat.com>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: jiffin tony Thottan <jthottan@redhat.com>
Reviewed-by: Kaleb KEITHLEY <kkeithle@redhat.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/glusterfsd.8 | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/glusterfsd.8 b/doc/glusterfsd.8 index 176d042367c..88b667cb463 100644 --- a/doc/glusterfsd.8 +++ b/doc/glusterfsd.8 @@ -101,6 +101,9 @@ Set entry timeout to SECONDS in fuse kernel module [default: 1] .TP \fB\-\-direct\-io\-mode=BOOL\fR Enable/Disable direct-io mode in fuse module [default: enable] +.TP +\fB\-\-resolve-gids\fR +Resolve all auxilary groups in fuse translator (max 32 otherwise) .SS "Miscellaneous Options" .PP |