[ceph-users] luminous ceph-fuse crashes with "failed to remount for kernel dentry trimming"

Patrick Donnelly pdonnell at redhat.com
Mon Nov 27 15:06:54 PST 2017


Hello Andras,

On Mon, Nov 27, 2017 at 2:31 PM, Andras Pataki
<apataki at flatironinstitute.org> wrote:
> After upgrading to the Luminous 12.2.1 ceph-fuse client, we've seen clients
> on various nodes randomly crash at the assert
>     FAILED assert(0 == "failed to remount for kernel dentry trimming")
>
> with the stack:
>
>  ceph version 12.2.1 (3e7492b9ada8bdc9a5cd0feafd42fbca27f9c38e) luminous
> (stable)
>  1: (ceph::__ceph_assert_fail(char const*, char const*, int, char
> const*)+0x110) [0x55555584ad80]
>  2: (C_Client_Remount::finish(int)+0xcf) [0x5555557e7fff]
>  3: (Context::complete(int)+0x9) [0x5555557e3dc9]
>  4: (Finisher::finisher_thread_entry()+0x198) [0x555555849d18]
>  5: (()+0x7e25) [0x7ffff60a3e25]
>  6: (clone()+0x6d) [0x7ffff4f8234d]

What kernel version are you using? We have seen instances of this
error recently. It may be related to [1]. Are you running out of
memory on these machines?

[1] http://tracker.ceph.com/issues/17517

-- 
Patrick Donnelly


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