Re: Ceph - reclaim free space - aka trimrbd image

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Thanks Jason,

I need some further info, because I'm really worried about ruin my data.
On this pool I have only XEN virtual disks.
Did I have to run the command directly on the "pool" or on the "virtual disks" ?

I guess that I have to run it on the pool.
As Admin I don't have access to local filesystem of the customer's virtual disk and neither I can temporarly mount it to trim them.
Are my assumptions right?

Another info: did I need to umount the image from every device that is actually using the image while I'm trimming it?

Thanks,
Max


Il 01/03/2017 20:11, Jason Dillaman ha scritto:
You should be able to issue an fstrim against the filesystem on top of
the nbd device or run blkdiscard against the raw device if you don't
have a filesystem.

On Wed, Mar 1, 2017 at 1:26 PM, Massimiliano Cuttini <max@xxxxxxxxxxxxx> wrote:
Dear all,

i use the rbd-nbd connector.
Is there a way to reclaim free space from rbd image using this component or
not?


Thanks,
Max

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