Hi! What kind of client (kernel vs. FUSE) do you use? I experience a lot of the following problems with the most recent ubuntu 18.04.3 kernel 4.15.0-66-generic : kernel: [260144.644232] cache_from_obj: Wrong slab cache. inode_cache but object is from ceph_inode_info Other clients with older kernels (e.g. 4.15.0-47-generic) work without interruption on the same CephFS. Lars Mon, 28 Oct 2019 22:10:25 +0000 Kári Bertilsson <karibertils@gmail.com> ==> Patrick Donnelly <pdonnell@redhat.com> :
Any ideas or tips on how to debug further ?
On Mon, Oct 28, 2019 at 7:17 PM Kári Bertilsson <karibertils@gmail.com> wrote:
Hello Patrick,
Here is output from those commands https://pastebin.com/yUmuQuYj
5 clients have the file system mounted, but only 2 of them have most of the activity.
On Mon, Oct 28, 2019 at 6:54 PM Patrick Donnelly <pdonnell@redhat.com> wrote:
Hello Kári,
This seems to happen mostly when listing folders containing 10k+ folders.
The dirlisting hangs indefinitely or until i restart the active MDS and
On Mon, Oct 28, 2019 at 11:14 AM Kári Bertilsson <karibertils@gmail.com> wrote: then the hanging "ls" command will finish running.
Every time restarting the active MDS fixes the problem for a while.
Please share details about your cluster. `fs dump`, `ceph status`, and `ceph versions`. How many clients are using the file system?
-- Patrick Donnelly, Ph.D. He / Him / His Senior Software Engineer Red Hat Sunnyvale, CA GPG: 19F28A586F808C2402351B93C3301A3E258DD79D
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