Hi,
[ceph@ceph1 my-cluster]$ ceph -v
ceph version 10.2.2 (45107e21c568dd033c2f0a3107dec8f0b0e58374)
[ceph@ceph1 my-cluster]$ rados -p mypool ls
hello.txt
[ceph@ceph1 my-cluster]$ rados -p mypool mksnap snap01
created pool mypool snap snap01
[ceph@ceph1 my-cluster]$ rados -p mypool lssnap
5 snap01 2016.08.21 03:59:28
1 snaps
[ceph@ceph1 my-cluster]$ rados -p mypool listsnaps hello.txt
hello.txt:
cloneid snaps size overlap
head - 13
Is this normal? Why is snap01 not listed in the above output? It is also having 'hello.txt', then why does snap01 not feature in the above list? I assume 'head' refers to the pool itself?
[ceph@ceph1 my-cluster]$ rados -p mypool rm hello.txt
[ceph@ceph1 my-cluster]$ rados -p mypool ls
[ceph@ceph1 my-cluster]$ rados -p mypool listsnaps hello.txt
hello.txt:
cloneid snaps size overlap
5 5 13 []
So, only after removing the object from pool does the snapshot id shows up.
[ceph@ceph1 my-cluster]$ rados -p mypool rollback hello.txt snap01
rolled back pool mypool to snapshot snap01
[ceph@ceph1 my-cluster]$ rados -p mypool ls
hello.txt
[ceph@ceph1 my-cluster]$ rados -p mypool listsnaps hello.txt
hello.txt:
cloneid snaps size overlap
5 5 13 []
head - 13
After roll back of the deleted object from snapshot to pool, both snapshot id and 'head' are listed! Isn't this same as the first case?
More over, on checking the 'man' page of rados, I realise that 'listsnaps' and 'rollback' options are missing. Is there a better / recommended way to deal with pool snapshots?
Thank you!
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