Re: CephFS is not maintianing conistency

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On Tue, Feb 2, 2016 at 8:28 PM, Mykola Dvornik <mykola.dvornik@xxxxxxxxx> wrote:
> No, I've never seen this issue on the Fedora stock kernels.
>
> So either my workflow is not triggering it on the Fedora software stack or
> the issues is CentOS / RHEL - specific.

I mean did you encounter this problem when using ceph-fuse on 4.3.5
kernel ? (fuse mount can also be affected by kernel bug)

Regards
Yan, Zheng

>
> Anyway I will file the ceph-fuse bug then.
>
> On Tue, Feb 2, 2016 at 12:43 PM, Yan, Zheng <ukernel@xxxxxxxxx> wrote:
>
> On Tue, Feb 2, 2016 at 5:32 PM, Mykola Dvornik <mykola.dvornik@xxxxxxxxx>
> wrote:
>
> One of my clients is using 4.3.5-300.fc23.x86_64 (Fedora release 23)
>
> did you encounter this problem on client using 4.3.5 kernel? If you did,
> this issue should be ceph-fuse bug.
>
> while all the other clients reply on 3.10.0-327.4.4.el7.x86_64 (CentOS Linux
> release 7.2.1511) Should I file report a bug on the RedHat bugzilla?
>
> you can open a bug at http://tracker.ceph.com/projects/cephfs/issues Regards
> Yan, Zheng
>
> On Tue, Feb 2, 2016 at 8:57 AM, Yan, Zheng <ukernel@xxxxxxxxx> wrote: On
> Tue, Feb 2, 2016 at 2:27 AM, Mykola Dvornik <mykola.dvornik@xxxxxxxxx>
> wrote: What version are you running on your servers and clients? Are you
> using 4.1 or 4.2 kernel? https://bugzilla.kernel.org/show_bug.cgi?id=104911.
> Upgrade to 4.3+ kernel or 4.1.17 kernel or 4.2.8 kernel can resolve this
> issue. On the clients: ceph-fuse --version ceph version 9.2.0
> (bb2ecea240f3a1d525bcb35670cb07bd1f0ca299) MDS/OSD/MON: ceph --version ceph
> version 9.2.0 (bb2ecea240f3a1d525bcb35670cb07bd1f0ca299) Exactly what
> changes are you making that aren't visible? I am creating some new files in
> non-root folders. What's the output of "ceph -s"? ceph -s cluster
> 98d72518-6619-4b5c-b148-9a781ef13bcb health HEALTH_OK monmap e1: 1 mons at
> {000-s-ragnarok=XXX.XXX.XXX.XXX:6789/0} election epoch 1, quorum 0
> 000-s-ragnarok mdsmap e576: 1/1/1 up {0=000-s-ragnarok=up:active} osdmap
> e233: 16 osds: 16 up, 16 in flags sortbitwise pgmap v1927636: 1088 pgs, 2
> pools, 1907 GB data, 2428 kobjects 3844 GB used, 25949 GB / 29793 GB avail
> 1088 active+clean client io 4381 B/s wr, 2 op In addition on the clients'
> side I have cat /etc/fuse.conf user_allow_other auto_cache large_read
> max_write = 16777216 max_read = 16777216 -Mykola On Mon, Feb 1, 2016 at 5:06
> PM, Gregory Farnum <gfarnum@xxxxxxxxxx> wrote: On Monday, February 1, 2016,
> Mykola Dvornik <mykola.dvornik@xxxxxxxxx> wrote: Hi guys, This is sort of
> rebuttal. I have a CephFS deployed and mounted on a couple of clients via
> ceph-fuse (due to quota support and possibility to kill the ceph-fuse
> process to avoid stale mounts). So the problems is that some times the
> changes made on one client are not visible on the others. It appears to me
> as rather random process. The only solution is to touch a new file in any
> particular folder that apparently triggers synchronization. I've been using
> a kernel-side client before with no such kind of problems. So the questions
> is it expected behavior of ceph-fuse? What version are you running on your
> servers and clients? Exactly what changes are you making that aren't
> visible? What's the output of "ceph -s"? We see bugs like this occasionally
> but I can't think of any recent ones in ceph-fuse -- they're actually seen a
> lot more often in the kernel client. -Greg Regards, Mykola
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