hi, cephers
I want to upgrade my ceph cluster from firefly(0.80.11) to hammer,
when i successfully install hammer deb package on all my hosts, then i
update monitor first, and it success.
but when i restart osds on one host to upgrade, it failed, osds
cannot startup, then i want to downgrade to firefly again to keep my
cluster going on, after i reinstall firefly deb package, i failed to
start osds on the host, here is the log:
2016-03-07 09:47:14.704242 7f2f11ba87c0 0 ceph version 0.80.11
(8424145d49264624a3b0a204aedb127835161070), process ceph-osd, pid
37459
2016-03-07 09:47:14.709159 7f2f11ba87c0 -1
filestore(/var/lib/ceph/osd/ceph-0) FileStore::mount : stale version
stamp 4. Please run the FileStore update script before starting the
OSD, or set filestore_update_to to 3
2016-03-07 09:47:14.709176 7f2f11ba87c0 -1 ** ERROR: error converting
store /var/lib/ceph/osd/ceph-0: (22) Invalid argument
2016-03-07 09:47:18.385399 7f98478187c0 0 ceph version 0.80.11
(8424145d49264624a3b0a204aedb127835161070), process ceph-osd, pid
39041
2016-03-07 09:47:18.390320 7f98478187c0 -1
filestore(/var/lib/ceph/osd/ceph-0) FileStore::mount : stale version
stamp 4. Please run the FileStore update script before starting the
OSD, or set filestore_update_to to 3
2016-03-07 09:47:18.390337 7f98478187c0 -1 ** ERROR: error converting
store /var/lib/ceph/osd/ceph-0: (22) Invalid argument
how can i downgrade to firefly successfully?
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