From: Eric Sandeen <sandeen@redhat.com>
To: "Amir G." <amir73il@users.sourceforge.net>
Cc: Lukas Czerner <lczerner@redhat.com>,
linux-ext4@vger.kernel.org, tytso@mit.edu,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v1 00/30] Ext4 snapshots
Date: Wed, 08 Jun 2011 09:41:33 -0500 [thread overview]
Message-ID: <4DEF8A1D.2080707@redhat.com> (raw)
In-Reply-To: <BANLkTi=T1OtyRSWNTA6xhkTy5uaHWqA_XA@mail.gmail.com>
On 6/8/11 9:04 AM, Amir G. wrote:
>> And one last note, I also think that the snapshot format change in the
>> > future, when we'll have snpashots with 64bit feature compatible seems
>> > just wrong to me. Adding some features or changing the implementation a
>> > bit is ok, but format change is different. When the code is upstream and
>> > stable it is just wrong.
> What can I say, I understand why it looks bad, but is 64bit code
> upstream and stable? Hell no! e2fsprogs 64bit is not out yet!
> There is no reason to call it 'format change'.
> It's going to be a new format used only for 64bit fs, which are not
> even out there yet. And when they are finally out there, they won't
> have
> snapshots until the new format is implemented.
Well, the on-disk format for 64-bit (48-bit?) ext4 is there & fixed; it's
just that there is no released userspace which can properly handle it, right?
I don't anticipate ext4 format changes for >16T, or am I missing something?
-Eric
next prev parent reply other threads:[~2011-06-08 14:41 UTC|newest]
Thread overview: 87+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-07 15:07 [PATCH v1 00/30] Ext4 snapshots amir73il
2011-06-07 15:07 ` [PATCH v1 01/36] ext4: EXT4 snapshots (Experimental) amir73il
2011-06-07 15:07 ` [PATCH v1 02/36] ext4: snapshot debugging support amir73il
2011-06-07 15:07 ` [PATCH v1 03/36] ext4: snapshot hooks - inside JBD hooks amir73il
2011-06-07 15:07 ` [PATCH v1 04/36] ext4: snapshot hooks - block bitmap access amir73il
2011-06-07 15:07 ` [PATCH v1 05/36] ext4: snapshot hooks - delete blocks amir73il
2011-06-07 15:07 ` [PATCH v1 06/36] ext4: snapshot hooks - move data blocks amir73il
2011-06-07 15:07 ` [PATCH v1 07/36] ext4: snapshot hooks - direct I/O amir73il
2011-06-07 15:07 ` [PATCH v1 08/36] ext4: snapshot hooks - move extent file data blocks amir73il
2011-06-07 15:07 ` [PATCH v1 09/36] ext4: snapshot file amir73il
2011-06-07 15:07 ` [PATCH v1 10/36] ext4: snapshot file - read through to block device amir73il
2011-06-07 15:07 ` [PATCH v1 11/36] ext4: snapshot file - permissions amir73il
2011-06-07 15:07 ` [PATCH v1 12/36] ext4: snapshot file - store on disk amir73il
2011-06-07 15:07 ` [PATCH v1 13/36] ext4: snapshot file - increase maximum file size limit to 16TB amir73il
2011-06-07 15:07 ` [PATCH v1 14/36] ext4: snapshot block operations amir73il
2011-06-07 15:07 ` [PATCH v1 15/36] ext4: snapshot block operation - copy blocks to snapshot amir73il
2011-06-07 15:07 ` [PATCH v1 16/36] ext4: snapshot block operation - move " amir73il
2011-06-07 15:07 ` [PATCH v1 17/36] ext4: snapshot block operation - copy block bitmap " amir73il
2011-06-07 15:07 ` [PATCH v1 18/36] ext4: snapshot control amir73il
2011-06-07 15:07 ` [PATCH v1 19/36] ext4: snapshot control - init new snapshot amir73il
2011-06-07 15:07 ` [PATCH v1 20/36] ext4: snapshot control - fix " amir73il
2011-06-07 15:07 ` [PATCH v1 21/36] ext4: snapshot control - reserve disk space for snapshot amir73il
2011-06-07 15:07 ` [PATCH v1 22/36] ext4: snapshot journaled - increase transaction credits amir73il
2011-06-07 15:07 ` [PATCH v1 23/36] ext4: snapshot journaled - implement journal_release_buffer() amir73il
2011-06-07 15:07 ` [PATCH v1 24/36] ext4: snapshot journaled - bypass to save credits amir73il
2011-06-07 15:07 ` [PATCH v1 25/36] ext4: snapshot journaled - cache last COW tid in journal_head amir73il
2011-06-07 15:07 ` [PATCH v1 26/36] ext4: snapshot journaled - trace COW/buffer credits amir73il
2011-06-07 15:07 ` [PATCH v1 27/36] ext4: snapshot list support amir73il
2011-06-07 15:07 ` [PATCH v1 28/36] ext4: snapshot list - read through to previous snapshot amir73il
2011-06-07 15:07 ` [PATCH v1 29/36] ext4: snapshot race conditions - concurrent COW bitmap operations amir73il
2011-06-07 15:07 ` [PATCH v1 30/36] ext4: snapshot race conditions - concurrent COW operations amir73il
2011-06-07 15:07 ` [PATCH v1 31/36] ext4: snapshot race conditions - tracked reads amir73il
2011-06-07 15:07 ` [PATCH v1 32/36] ext4: snapshot exclude - the exclude bitmap amir73il
2011-06-07 15:08 ` [PATCH v1 33/36] ext4: snapshot cleanup amir73il
2011-06-07 15:08 ` [PATCH v1 34/36] ext4: snapshot cleanup - shrink deleted snapshots amir73il
2011-06-07 15:08 ` [PATCH v1 35/36] ext4: snapshot cleanup - merge shrunk snapshots amir73il
2011-06-07 15:08 ` [PATCH v1 36/36] ext4: snapshot rocompat - enable rw mount amir73il
2011-06-07 15:56 ` [PATCH v1 00/30] Ext4 snapshots Lukas Czerner
2011-06-07 16:31 ` Amir G.
2011-06-07 16:31 ` Amir G.
2011-06-08 10:09 ` Lukas Czerner
2011-06-08 14:04 ` Amir G.
2011-06-08 14:41 ` Eric Sandeen [this message]
2011-06-08 15:01 ` Amir G.
2011-06-08 15:22 ` Eric Sandeen
2011-06-08 15:33 ` Amir G.
2011-06-08 15:33 ` Amir G.
2011-06-08 15:38 ` Lukas Czerner
2011-06-08 15:59 ` Amir G.
2011-06-08 16:19 ` Mike Snitzer
2011-06-09 1:59 ` Yongqiang Yang
2011-06-09 3:18 ` Amir G.
2011-06-09 3:18 ` Amir G.
2011-06-09 3:51 ` Yongqiang Yang
2011-06-09 3:51 ` Yongqiang Yang
2011-06-09 6:50 ` Lukas Czerner
2011-06-09 7:57 ` Amir G.
2011-06-09 7:57 ` Amir G.
2011-06-09 8:13 ` david
2011-06-09 10:06 ` Amir G.
2011-06-09 10:06 ` Amir G.
2011-06-09 10:17 ` Lukas Czerner
2011-06-09 8:46 ` Lukas Czerner
2011-06-09 10:54 ` Amir G.
2011-06-09 10:54 ` Amir G.
2011-06-09 12:59 ` Lukas Czerner
2011-06-10 7:06 ` Amir G.
2011-06-10 7:06 ` Amir G.
2011-06-10 9:00 ` Lukas Czerner
2011-06-10 12:02 ` Amir G.
2011-06-13 9:56 ` Amir G.
2011-06-13 10:54 ` Lukas Czerner
2011-06-13 10:54 ` Lukas Czerner
2011-06-13 12:56 ` Amir G.
2011-06-13 12:56 ` Amir G.
2011-06-13 13:11 ` Lukas Czerner
2011-06-13 13:11 ` Lukas Czerner
2011-06-13 13:26 ` Amir G.
2011-06-13 13:26 ` Amir G.
2011-06-13 13:50 ` Joe Thornber
2011-06-13 13:50 ` Joe Thornber
2011-06-10 22:51 ` Valdis.Kletnieks
2011-06-11 1:09 ` Amir G.
2011-06-11 1:09 ` Amir G.
2011-06-21 11:06 ` Amir G.
2011-06-21 15:45 ` Andreas Dilger
2011-06-22 6:38 ` Amir G.
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