You could use rbd info <volume_name> to see the block_name_prefix, the object name consist like <block_name_prefix>.<sequence_number>, so for example, rb.0.ff53.3d1b58ba.00000000e6ad should be the <e6ad>th object of the volume with block_name_prefix rb.0.ff53.3d1b58ba.
$ rbd info huge
rbd image 'huge':
size 1024 TB in 268435456 objects
order 22 (4096 kB objects)
block_name_prefix: rb.0.8a14.2ae8944a
format: 1
-----Original Message-----
From: ceph-users [mailto:ceph-users-bounces@xxxxxxxxxxxxxx] On Behalf Of Edwin Peer
Sent: Monday, January 5, 2015 3:55 AM
To: ceph-users@xxxxxxxxxxxxxx
Subject: Re: rbd resize (shrink) taking forever and a day
Also, which rbd objects are of interest?
<snip>
ganymede ~ # rados -p client-disk-img0 ls | wc -l
1672636
</snip>
And, all of them have cryptic names like:
rb.0.ff53.3d1b58ba.00000000e6ad
rb.0.6d386.1d545c4d.000000011461
rb.0.50703.3804823e.000000001c28
rb.0.1073e.3d1b58ba.00000000b715
rb.0.1d76.2ae8944a.00000000022d
which seem to bear no resemblance to the actual image names that the rbd command line tools understands?
Regards,
Edwin Peer
On 01/04/2015 08:48 PM, Jake Young wrote:
>
>
> On Sunday, January 4, 2015, Dyweni - Ceph-Users
> <6EXbab4FYk8H@xxxxxxxxxx <mailto:6EXbab4FYk8H@xxxxxxxxxx>> wrote:
>
> Hi,
>
> If its the only think in your pool, you could try deleting the
> pool instead.
>
> I found that to be faster in my testing; I had created 500TB when
> I meant to create 500GB.
>
> Note for the Devs: I would be nice if rbd create/resize would
> accept sizes with units (i.e. MB GB TB PB, etc).
>
>
>
>
> On 2015-01-04 08:45, Edwin Peer wrote:
>
> Hi there,
>
> I did something stupid while growing an rbd image. I accidentally
> mistook the units of the resize command for bytes instead of
> megabytes
> and grew an rbd image to 650PB instead of 650GB. This all happened
> instantaneously enough, but trying to rectify the mistake is
> not going
> nearly as well.
>
> <snip>
> ganymede ~ # rbd resize --size 665600 --allow-shrink
> client-disk-img0/vol-x318644f-0
> Resizing image: 1% complete...
> </snip>
>
> It took a couple days before it started showing 1% complete
> and has
> been stuck on 1% for a couple more. At this rate, I should be
> able to
> shrink the image back to the intended size in about 2016.
>
> Any ideas?
>
> Regards,
> Edwin Peer
> _______________________________________________
> ceph-users mailing list
> ceph-users@xxxxxxxxxxxxxx
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>
> _______________________________________________
> ceph-users mailing list
> ceph-users@xxxxxxxxxxxxxx
> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>
>
> You can just delete the rbd header. See Sebastien's excellent blog:
>
> http://www.sebastien-han.fr/blog/2013/12/12/rbd-image-bigger-than-your
> -ceph-cluster/
>
> Jake
>
>
> _______________________________________________
> ceph-users mailing list
> ceph-users@xxxxxxxxxxxxxx
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