Le mercredi 19 octobre 2011 à 13:56 +0100, Alasdair G Kergon a écrit : > On Wed, Oct 19, 2011 at 02:48:20PM +0200, Yann Droneaud wrote: > > Is there any tool for LVM like fstrim(8) (which would likely be called > > "lvmtrim") ? > > vgtrim > > > This tool would discard currently unused PE of an active VG like > > fstrim(8) is doing on ext4,btrfs,xfs blocks (depending on filesystem > > support). > > Sounds a reasonable idea to me, although I question how the PEs that > would benefit from it would have got into that state in the first place, > given that lvreduce already has trim support if you had > devices/issue_discards = 1 in your lvm.conf. > Perhaps when you forgot to discard/TRIM the whole SSD before re-using it in an active VG. Perhaps in the case you're migrating from an older version of the LVM2 tools ? Or issue_discards was set to 0. Regards. -- Yann Droneaud _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
