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authorNiels de Vos <ndevos@redhat.com>2015-07-21 18:50:12 +0200
committerKaleb KEITHLEY <kkeithle@redhat.com>2015-08-05 04:53:12 -0700
commit64a5bf3749c67fcc00773a2716d0c7b61b0b4417 (patch)
tree4dd5a36c66ca70f726427480a1a87c44803027a1 /doc
parent28fc199d5dc92a69eb2b899bbea23548dc14a39b (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.83
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