Thanks a lot and sorry for the spam, I should have checked ! We are on 18.04, kernel is currently upgrading so if you don't hear back from me then it is fixed.
Thanks for the amazing support !
On Wed, 30 Oct 2019, 09:54 Lars Täuber, <taeuber@xxxxxxx> wrote:
Hi.
Sounds like you use kernel clients with kernels from canonical/ubuntu.
Two kernels have a bug:
4.15.0-66
and
5.0.0-32
Updated kernels are said to have fixes.
Older kernels also work:
4.15.0-65
and
5.0.0-31
Lars
Wed, 30 Oct 2019 09:42:16 +0000
Bob Farrell <bob@xxxxxxxxxxxxxx> ==> ceph-users <ceph-users@xxxxxxxxxxxxxx> :
> Hi. We are experiencing a CephFS client issue on one of our servers.
>
> ceph version 14.2.0 (3a54b2b6d167d4a2a19e003a705696d4fe619afc) nautilus
> (stable)
>
> Trying to access, `umount`, or `umount -f` a mounted CephFS volumes causes
> my shell to hang indefinitely.
>
> After a reboot I can remount the volumes cleanly but they drop out after <
> 1 hour of use.
>
> I see this log entry multiple times when I reboot the server:
> ```
> cache_from_obj: Wrong slab cache. inode_cache but object is from
> ceph_inode_info
> ```
> The machine then reboots after approx. 30 minutes.
>
> All other Ceph/CephFS clients and servers seem perfectly happy. CephFS
> cluster is HEALTH_OK.
>
> Any help appreciated. If I can provide any further details please let me
> know.
>
> Thanks in advance,
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