[linux-lvm] strange usage stats for thin LV
Mike Snitzer
snitzer at redhat.com
Wed Nov 7 22:24:30 UTC 2012
On Wed, Nov 07 2012 at 5:03pm -0500,
Andres Toomsalu <andres at active.ee> wrote:
> Apparently that does not work - FITRIM ioctl not backported to RHEL6 kernel perhaps?
>
> fstrim -v /backup
> fstrim: /backup: FITRIM ioctl failed: Operation not supported
>
> df -h
> /dev/mapper/VolGroupL0-thin_backup 591G 104G 458G 19% /backup
>
> mount (added discard option today)
> /dev/mapper/VolGroupL0-thin_backup on /backup type ext4 (rw,discard)
ext4's FITRIM support was updated in RHEL6.3. Which version of RHEL6
are you running?
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