[Gluster-users] Gluster problems permission denied LOOKUP () /etc/samba/private/msg.sock

[Poornima Gurusiddaiah]

On Tue, Oct 2, 2018 at 5:26 PM Diego Remolina <dijuremo at gmail.com> wrote:

> Dear all,
>
> I have a two node setup running on Centos and gluster version
> glusterfs-3.10.12-1.el7.x86_64
>
> One of my nodes died (motherboard issue). Since I had to continue
> being up, I modified the quorum to below 50% to make sure I could
> still run on one server.
>
> The server runs ovirt and 2 VMs on top of a volume called vmstorage. I
> also had a third node in the peer list, but never configured it as an
> arbiter, so it just comes up in gluster v status. The server also run
> a file server with samba to serve files to windows machines.
>
> The issue is that since starting the server on it's own as the samba
> server, I am seeing permission denied errors for the "export" volume
> in /var/log/glusterfs/export.log
>
> The errors look like this and repeat over and over:
>
> [2018-10-02 11:46:56.327925] I [MSGID: 139001]
> [posix-acl.c:269:posix_acl_log_permit_denied] 0-posix-acl-autoload:
> client: -, gfid: 5b5bed22-ace0-410d-8623-4f1a31069b81,
> req(uid:1051,gid:513,perm:1,ngrps:2),
> ctx(uid:0,gid:0,in-groups:0,perm:700,updated-fop:LOOKUP, acl:-)
> [Permission denied]
> [2018-10-02 11:46:56.328004] W [fuse-bridge.c:490:fuse_entry_cbk]
> 0-glusterfs-fuse: 20599112: LOOKUP() /etc/samba/private/msg.sock/15149
> => -1 (Permission denied)
> [2018-10-02 11:46:56.328185] W [fuse-bridge.c:490:fuse_entry_cbk]
> 0-glusterfs-fuse: 20599113: LOOKUP() /etc/samba/private/msg.sock/15149
> => -1 (Permission denied)
> [2018-10-02 11:47:53.766562] W [fuse-bridge.c:490:fuse_entry_cbk]
> 0-glusterfs-fuse: 20600590: LOOKUP() /etc/samba/private/msg.sock/15149
> => -1 (Permission denied)
>
> The gluster volume export is mounted on /export, samba and ctdb are
> instructed to use /export/etc/samba/private and /export/lock which is
> on the gluster file system for the clustered tdb, etc. However, I keep
> getting the log messages that fuse seems to try to access a folder
> that does not exist, /etc/samba/private/msg.sock
>

This is an unconventional setup, the suggested way of clustering samba is
as mentioned in [1]. Sharing tdbs using gluster volume can lead to more
issues. Has the setup ever worked? Was this setup suggested somewhere?

[1]
https://access.qa.redhat.com/documentation/en-us/red_hat_gluster_storage/3.3/html-single/administration_guide/#sect-SMB_CTDB


> Why is this, how can I fix it?
>
> [root at ysmha01 export]# gluster v status export
> Status of volume: export
> Gluster process                             TCP Port  RDMA Port  Online
> Pid
>
> ------------------------------------------------------------------------------
> Brick 10.0.1.6:/bricks/hdds/brick           49153     0          Y
>  3516
> Self-heal Daemon on localhost               N/A       N/A        Y
>  3710
> Self-heal Daemon on 10.0.1.5                N/A       N/A        Y
>  4380
>
> Task Status of Volume export
>
> ------------------------------------------------------------------------------
> There are no active volume tasks
>
> These are all the volume options currently set:
>
> http://termbin.com/1xm5
>
> Diego
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> Gluster-users at gluster.org
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>
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