From: "Amir G." <amir73il@users.sourceforge.net>
To: Valdis.Kletnieks@vt.edu
Cc: Lukas Czerner <lczerner@redhat.com>,
Yongqiang Yang <xiaoqiangnk@gmail.com>,
linux-ext4@vger.kernel.org, tytso@mit.edu,
linux-kernel@vger.kernel.org, sandeen@redhat.com
Subject: Re: [PATCH v1 00/30] Ext4 snapshots
Date: Sat, 11 Jun 2011 04:09:27 +0300 [thread overview]
Message-ID: <BANLkTik2qGZaKFZwKsHidde+uhS1j+kFuw@mail.gmail.com> (raw)
In-Reply-To: <52699.1307746288@turing-police.cc.vt.edu>
On Sat, Jun 11, 2011 at 1:51 AM, <Valdis.Kletnieks@vt.edu> wrote:
> On Thu, 09 Jun 2011 13:54:13 +0300, "Amir G." said:
>
>> Why do you keep saying 'backup only'?
>> There is a huge difference between having long lived snapshots,
>> like CTERA products have, and temporary snapshot for backup
>> purpose (for which LVM is adequate).
>
> I must have blinked somewhere - I'm not convinced LVM is even "adequate" for
> backup purposes. In particular, how does an LVM-level snapshot deal with the
> "metadata in memory" problem (basically the exact same problem as running fsck
> on a disk partition that is already mounted)?
>
>
It uses the filesystem freeze API.
Same as ext4 snapshots.
Amir.
prev parent reply other threads:[~2011-06-11 1:09 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1307459283-22130-1-git-send-email-amir73il@users.sourceforge.net>
2011-06-07 15:56 ` Lukas Czerner
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
2011-06-08 15:01 ` Amir G.
2011-06-08 15:22 ` Eric Sandeen
2011-06-08 15:33 ` Amir G.
2011-06-08 15:38 ` 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 3:51 ` Yongqiang Yang
2011-06-09 6:50 ` Lukas Czerner
2011-06-09 7:57 ` Amir G.
2011-06-09 8:13 ` david
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 12:59 ` Lukas Czerner
2011-06-10 7:06 ` Amir G.
2011-06-10 9:00 ` Lukas Czerner
2011-06-10 12:02 ` Amir G.
2011-06-10 22:51 ` Valdis.Kletnieks
2011-06-11 1:09 ` Amir G. [this message]
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