Re: cephfs: recovering from transport endpoint not connected?

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On Mon, Apr 27, 2015 at 3:42 PM, Burkhard Linke
<Burkhard.Linke@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> Hi,
>
> I've deployed ceph on a number of nodes in our compute cluster (Ubuntu 14.04
> Ceph Firefly 0.80.9). /ceph is mounted via ceph-fuse.
>
> From time to time some nodes loose their access to cephfs with the following
> error message:
>
> # ls /ceph
> ls: cannot access /ceph: Transport endpoint is not connected

looks like ceph-fuse was crashed. please check if there is any crash
related information in the client log files

>
> The ceph client log contains the entries like:
> 2015-04-22 14:25:42.834607 7fcca6fa07c0  0 ceph version 0.80.9
> (b5a67f0e1d15385bc0d60a6da6e7fc810bde6047), process ceph-fuse, pid 156483
>
> 2015-04-26 17:23:15.430052 7f08570777c0  0 ceph version 0.80.9
> (b5a67f0e1d15385bc0d60a6da6e7fc810bde6047), process ceph-fuse, pid 140778
> 2015-04-26 17:23:15.625731 7f08570777c0 -1 fuse_parse_cmdline failed.
> 2015-04-26 17:23:18.921788 7f5bc299b7c0  0 ceph version 0.80.9
> (b5a67f0e1d15385bc0d60a6da6e7fc810bde6047), process ceph-fuse, pid 140807
> 2015-04-26 17:23:19.166199 7f5bc299b7c0 -1 fuse_parse_cmdline failed.
>
> Re-mounting resolves the problem, but it may not be possible due to
> processes with (now stale) access to the mount point. Is there a better way
> to resolve this problem (especially without remounting)?
>
> Best regards,
> Burkhard
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