Hi Hartwig,
I’m in a similar situation, did you ever get this fixed?
-TJ
On 29 Jan 2020, at 11:16, Hartwig Hauschild
<ml-ceph@hauschild.it<mailto:ml-ceph@hauschild.it>> wrote:
Hi,
I had looked at the output of `ceph health detail` which told me to search
for 'incomplete' in the docs.
Since that said to file a bug (and I was sure that filing a bug did not
help) I continued to purge the Disks that we hat overwritten and ceph then
did some magic and told me that the PGs were again available on three OSDs
but were incomplete.
I have now gone ahead and marked all three of the OSDs where one of my
incomplete PGs is (according to `ceph pg ls incomplete`) as lost one by
one, waiting for ceph status to settle in between and that lead to the PG
now being incomplete on three different OSDs.
Also, force-create-pg tells me "already created".
Am 29.01.2020 schrieb Gregory Farnum:
There should be docs on how to mark an OSD lost, which I would expect to be
linked from the troubleshooting PGs page.
There is also a command to force create PGs but I don’t think that will
help in this case since you already have at least one copy.
On Tue, Jan 28, 2020 at 5:15 PM Hartwig Hauschild
<ml-ceph@hauschild.it<mailto:ml-ceph@hauschild.it>>
wrote:
Hi.
before I descend into what happened and why it happened: I'm talking about
a
test-cluster so I don't really care about the data in this case.
We've recently started upgrading from luminous to nautilus, and for us that
means we're retiring ceph-disk in favour of ceph-volume with lvm and
dmcrypt.
Our setup is in containers and we've got DBs separated from Data.
When testing our upgrade-path we discovered that running the host on
ubuntu-xenial and the containers on centos-7.7 leads to lvm inside the
containers not using lvmetad because it's too old. That in turn means that
not running `vgscan --cache` on the host before adding a LV to a VG
essentially zeros the metadata for all LVs in that VG.
That happened on two out of three hosts for a bunch of OSDs and those OSDs
are gone. I have no way of getting them back, they've been overwritten
multiple times trying to figure out what went wrong.
So now I have a cluster that's got 16 pgs in 'incomplete', 14 of them with
0
objects, 2 with about 150 objects each.
I have found a couple of howtos that tell me to use ceph-objectstore-tool
to
find the pgs on the active osds and I've given that a try, but
ceph-objectstore-tool always tells me it can't find the pg I am looking
for.
Can I tell ceph to re-init the pgs? Do I have to delete the pools and
recreate them?
There's no data I can't get back in there, I just don't feel like
scrapping and redeploying the whole cluster.
--
Cheers,
Hardy
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--
Cheers,
Hardy
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