Public bug reported:
After clients have upgraded to 4.4.0-103.126 they can no longer connect
to the Ceph network.
Using the Grub menu to boot the previous kernel fixes the issue.
The error in dmesg is:
[ 46.811897] FS-Cache: Loaded
[ 46.843670] Key type ceph registered
[ 46.844177] libceph: loaded (mon/osd proto 15/24)
[ 46.863107] FS-Cache: Netfs 'ceph' registered for caching
[ 46.863116] ceph: loaded (mds proto 32)
[ 46.884392] libceph: client3354099 fsid 2efbeab1-4903-4c4c-8365-6778afecbcbd
[ 46.886856] libceph: mon0 10.10.2.111:6789 session established
[ 46.897487] ceph: problem parsing mds trace -5
[ 46.897491] ceph: mds parse_reply err -5
[ 46.897492] ceph: mdsc_handle_reply got corrupt reply mds0(tid:1)
All clients are running ceph client version:
ii ceph-fs-common 10.2.9-0ubuntu0.16.04.1
Server nodes are running 10.2.6 packages as supplied by Ceph.
All 10.2.* versions are compatible. Using the previous kernel allows the
connection to work.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Tags: ceph cephfs
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https://bugs.launchpad.net/bugs/1737033
Title:
upgrading linux-image package to 4.4.0-103.126 breaks Ceph network
file system connection
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