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Sun, 29 Nov 2020 13:52:30 +0100 Received: from webmail.assyoma.it (localhost [IPv6:::1]) by plutone.assyoma.it (Postfix) with ESMTPA id 00FF7C09A802; Sun, 29 Nov 2020 13:52:29 +0100 (CET) MIME-Version: 1.0 Date: Sun, 29 Nov 2020 13:52:29 +0100 From: Gionatan Danti To: LVM general discussion and development In-Reply-To: References: User-Agent: Roundcube Webmail/1.4.9 Message-ID: <608365664c2a18db4e756f524c0e76da@assyoma.it> X-Sender: g.danti@assyoma.it X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-loop: linux-lvm@redhat.com Cc: Chris Murphy Subject: Re: [linux-lvm] swap on thin-provisioning X-BeenThere: linux-lvm@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-lvm-bounces@redhat.com Errors-To: linux-lvm-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=linux-lvm-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" 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.danti@assyoma.it - info@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/