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You can access offline OSD using ceph-objectstore-tool which
allows to enumerate and access specific objects.
Not sure this makes sense for any purposes other than low-level
debugging though..
Thanks,
Igor
On 6/28/2018 5:42 AM, Yu Haiyang wrote:
Hi All,
Previously I read this article about how to locate
an object on the OSD disk.
Apparently it was on a FileStore-back disk
partition.
Now I have upgraded my Ceph to Luminous and hosted
my OSDs on BlueStore partition, the OSD directory structure has
completely changed.
The data is mapped to a block device as below and
that’s as far as I can trace.
lrwxrwxrwx 1 ceph ceph 93 Jun 24 17:03
block ->
/dev/ceph-0ec01ce9-d397-43e7-ad62-93cd1c62f75a/osd-block-f590b656-e40c-42f7-8cf9-ca846632d046
Hence is there still a way to pinpoint an object on
a BlueStore disk partition?
Best,
Haiyang
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