IIRC at VMWare vSphere 5 and before, swap could not be located on their type of thin logical volume. Nor could it swap to a linux LVM volume on top of that. It just couldnt perform well. That later changed.
On Sun, Nov 29, 2020, 6:53 AM Gionatan Danti <g.da...@assyoma.it> wrote: > Il 2020-11-29 01:18 Chris Murphy ha scritto: > > What about a swapfile (on ext4 or XFS) onr a thin volume? In this > > case, I'd expect fallocate would set the LE to PE mapping, and it > > should work. But does it work for both paging and hibernation files? > > If things did not change, fallocate does *not* allocate PE space (ie: > they are not passed down to the underlying thin pool). > > Moreover, I expect for a memory-starved machine to page out pool > metadata (right?) so I would not use a thin volume for swap. > > Regards. > > -- > Danti Gionatan > Supporto Tecnico > Assyoma S.r.l. - www.assyoma.it > email: g.da...@assyoma.it - i...@assyoma.it > GPG public key ID: FF5F32A8 > > _______________________________________________ > 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/ > >
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