Date: Thu, 16 Jul 2020 10:45:28 -0600 From: Alan Somers <asomers@freebsd.org> To: Allan Jude <allanjude@freebsd.org> Cc: src-committers <src-committers@freebsd.org>, svn-src-all <svn-src-all@freebsd.org>, svn-src-head <svn-src-head@freebsd.org> Subject: Re: svn commit: r363255 - head/sys/dev/virtio/block Message-ID: <CAOtMX2g1Eu5ZH-3S5MbF_OLyohSNYXquW00D7f83Pu%2Bpsna2uQ@mail.gmail.com> In-Reply-To: <202007161632.06GGWGIR034870@repo.freebsd.org> References: <202007161632.06GGWGIR034870@repo.freebsd.org>
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On Thu, Jul 16, 2020 at 10:32 AM Allan Jude <allanjude@freebsd.org> wrote: > Author: allanjude > Date: Thu Jul 16 16:32:16 2020 > New Revision: 363255 > URL: https://svnweb.freebsd.org/changeset/base/363255 > > Log: > Add VIRTIO_BLK_T_DISCARD support to the virtio-blk driver > > If the hypervisor advertises support for the DISCARD command then the > guest can perform TRIM commands, freeing space on the backing store. > > If VIRTIO_BLK_F_DISCARD is enabled, advertise DISKFLAG_CANDELETE > > Tested with FreeBSD guests on bhyve and KVM > +1
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