[Gluster-users] parallel-readdir prevents directories and files listing - Bug 1670382

[Amar Tumballi Suryanarayan]

On Mon, Apr 29, 2019 at 3:56 PM João Baúto <
joao.bauto at neuro.fchampalimaud.org> wrote:

> Hi,
>
> I have an 8 brick distributed volume where Windows and Linux clients mount
> the volume via samba and headless compute servers using gluster native
> fuse. With parallel-readdir on, if a Windows client creates a new folder,
> the folder is indeed created but invisible to the Windows client. Accessing
> the same samba share in a Linux client, the folder is again visible and
> with normal behavior. The same folder is also visible when mounting via
> gluster native fuse.
>
> The Windows client can list existing directories and rename them while,
> for files, everything seems to be working fine.
>
> Gluster servers: CentOS 7.5 with Gluster 5.3 and Samba 4.8.3-4.el7.0.1
> from @fasttrack
> Clients tested: Windows 10, Ubuntu 18.10, CentOS 7.5
>
> https://bugzilla.redhat.com/show_bug.cgi?id=1670382
>

Thanks for the bug report. Will look into this, and get back.

Last I knew, we recommended to avoid fuse and samba shares on same volume
(Mainly as we couldn't spend a lot of effort on testing the configuration).
Anyways, we would treat the behavior as bug for sure. One possible path
looking at below volume info is to disable 'stat-prefetch' option and see
if it helps. Next option I would try is to disable readdir-ahead.

Regards,
Amar


> <https://bugzilla.redhat.com/show_bug.cgi?id=1670382>
>
> Volume Name: tank
> Type: Distribute
> Volume ID: 9582685f-07fa-41fd-b9fc-ebab3a6989cf
> Status: Started
> Snapshot Count: 0
> Number of Bricks: 8
> Transport-type: tcp
> Bricks:
> Brick1: swp-gluster-01:/tank/volume1/brick
> Brick2: swp-gluster-02:/tank/volume1/brick
> Brick3: swp-gluster-03:/tank/volume1/brick
> Brick4: swp-gluster-04:/tank/volume1/brick
> Brick5: swp-gluster-01:/tank/volume2/brick
> Brick6: swp-gluster-02:/tank/volume2/brick
> Brick7: swp-gluster-03:/tank/volume2/brick
> Brick8: swp-gluster-04:/tank/volume2/brick
> Options Reconfigured:
> performance.parallel-readdir: on
> performance.readdir-ahead: on
> performance.cache-invalidation: on
> performance.md-cache-timeout: 600
> storage.batch-fsync-delay-usec: 0
> performance.write-behind-window-size: 32MB
> performance.stat-prefetch: on
> performance.read-ahead: on
> performance.read-ahead-page-count: 16
> performance.rda-request-size: 131072
> performance.quick-read: on
> performance.open-behind: on
> performance.nl-cache-timeout: 600
> performance.nl-cache: on
> performance.io-thread-count: 64
> performance.io-cache: off
> performance.flush-behind: on
> performance.client-io-threads: off
> performance.write-behind: off
> performance.cache-samba-metadata: on
> network.inode-lru-limit: 0
> features.cache-invalidation-timeout: 600
> features.cache-invalidation: on
> cluster.readdir-optimize: on
> cluster.lookup-optimize: on
> client.event-threads: 4
> server.event-threads: 16
> features.quota-deem-statfs: on
> nfs.disable: on
> features.quota: on
> features.inode-quota: on
> cluster.enable-shared-storage: disable
>
> Cheers,
>
> João Baúto
> _______________________________________________
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> Gluster-users at gluster.org
> https://lists.gluster.org/mailman/listinfo/gluster-users



-- 
Amar Tumballi (amarts)
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