From: Christoph Hellwig <hch@infradead.org>
To: LVM general discussion and development <linux-lvm@redhat.com>,
"lvm-devel@redhat.com" <lvm-devel@redhat.com>,
"dm-devel@redhat.com" <dm-devel@redhat.com>
Subject: Re: [linux-lvm] ??????: New LVM2 release 2.02.89: Thinly-provisioned logical?volumes
Date: Mon, 30 Jan 2012 09:30:48 -0500 [thread overview]
Message-ID: <20120130143048.GA11766@infradead.org> (raw)
In-Reply-To: <20120130094336.GA4264@ubuntu>
On Mon, Jan 30, 2012 at 09:43:37AM +0000, Joe Thornber wrote:
> On Mon, Jan 30, 2012 at 06:29:54AM +0000, Kirby Zhou wrote:
> > Can the thinly-provisioned logical volume automatically return its owned space to the pool?
> > I mean, if I create a huge file on the logical volume, then delete it, will the logical volume actual space size be reduced automatically?
> > If not, how can it be shrinked?
>
>
> Discard support is currently in testing. Should go upstream soon.
Note that you'll also need filesystem support for that, too. Currently
no filesystem enables online discard by default, and at least directly
on SSDs the impact is rather bad on all Linux filesystems.
next prev parent reply other threads:[~2012-01-30 14:30 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-27 2:57 New LVM2 release 2.02.89: Thinly-provisioned logical volumes Alasdair G Kergon
2012-01-30 6:29 ` 答复: " Kirby Zhou
2012-01-30 9:43 ` [linux-lvm] 答复: New LVM2 release 2.02.89: Thinly-provisioned logical?volumes Joe Thornber
2012-01-30 14:30 ` Christoph Hellwig [this message]
2012-01-31 9:52 ` [linux-lvm] New LVM2 release 2.02.89: Thinly-provisioned logical volumes Busby.Cheung
2012-01-31 13:23 ` Alasdair G Kergon
2012-02-01 1:42 ` Busby.Cheung
2012-02-01 8:40 ` Busby.Cheung
2012-02-01 12:41 ` Alasdair G Kergon
2012-02-02 1:36 ` Busby.Cheung
2012-02-02 9:41 ` Zdenek Kabelac
2012-02-03 2:54 ` Busby.Cheung
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