Re: [dm-devel] do not disable ext4 discards on first discard failure? [was: Re: dm snapshot: ignore discards issued to the snapshot-origin target]

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To: Lukas Czerner <lczerner@redhat.com>, Mike Snitzer <snitzer@redhat.com>, sandeen@redhat.com, Christoph Hellwig <hch@infradead.org>, dm-devel@redhat.com, DarkNovaNick@gmail.com, linux-lvm@redhat.com, linux-ext4@vger.kernel.org
Subject: Re: [dm-devel] do not disable ext4 discards on first discard failure? [was: Re: dm snapshot: ignore discards issued to the snapshot-origin target]
From: Christoph Hellwig <hch@infradead.org>
Date: Fri, 29 Apr 2011 08:29:06 -0400
In-reply-to: <20110429122454.GL32370@agk-dp.fab.redhat.com>
References: <20110412234706.GA11244@redhat.com> <20cf301cbef67d323104a0c2ff52@google.com> <20110413224025.GA18589@redhat.com> <20110413234854.GA19793@redhat.com> <20110426173213.GA19604@redhat.com> <20110428001912.GA14659@redhat.com> <20110428075355.GA2190@infradead.org> <20110428205935.GA24979@redhat.com> <alpine.LFD.2.00.1104291117510.5496@dhcp-27-109.brq.redhat.com> <20110429122454.GL32370@agk-dp.fab.redhat.com>
Reply-to: LVM general discussion and development <linux-lvm@redhat.com>
User-agent: Mutt/1.5.21 (2010-09-15)

FYI, that disable discard on failure seems to be an ext4 special and no
one else picked up that stupid idea.  If ext4 wants to misbehave for
that just let them..

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Follow-Ups:
- Re: [dm-devel] do not disable ext4 discards on first discard failure? [was: Re: dm snapshot: ignore discards issued to the snapshot-origin target]
  - From: Eric Sandeen

References:
- Re: Testing TRIM with LVM
  - From: Mike Snitzer
- Re: Testing TRIM with LVM
  - From: DarkNovaNick
- [PATCH] dm snapshot: add discard support to the snapshot-origin target [was: Re: Testing TRIM with LVM]
  - From: Mike Snitzer
- Re: dm snapshot: add discard support to the snapshot-origin target [was: Re: Testing TRIM with LVM]
  - From: Mike Snitzer
- Re: dm snapshot: add discard support to the snapshot-origin target [was: Re: Testing TRIM with LVM]
  - From: Mike Snitzer
- [PATCH] dm snapshot: ignore discards issued to the snapshot-origin target
  - From: Mike Snitzer
- Re: [dm-devel] [PATCH] dm snapshot: ignore discards issued to the snapshot-origin target
  - From: Christoph Hellwig
- do not disable ext4 discards on first discard failure? [was: Re: dm snapshot: ignore discards issued to the snapshot-origin target]
  - From: Mike Snitzer
- Re: do not disable ext4 discards on first discard failure? [was: Re: dm snapshot: ignore discards issued to the snapshot-origin target]
  - From: Lukas Czerner
- Re: [dm-devel] do not disable ext4 discards on first discard failure? [was: Re: dm snapshot: ignore discards issued to the snapshot-origin target]
  - From: Alasdair G Kergon

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