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From: Stefan Priebe - Profihost AG <s.priebe@profihost.ag>
To: Wido den Hollander <wido@widodh.nl>
Cc: "ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>
Subject: Re: RBD Backup
Date: Thu, 22 Nov 2012 11:57:57 +0100	[thread overview]
Message-ID: <50AE0535.8080904@profihost.ag> (raw)
In-Reply-To: <50ACDB85.4020006@widodh.nl>

Hi,

Am 21.11.2012 14:47, schrieb Wido den Hollander:
> The snapshot isn't consistent since it has no way of telling the VM to
> flush it's buffers.
>
> To make it consistent you have to run "sync" (In the VM) just prior to
> creating the snapshot.

Mhm but between executing sync and executing snap is again time to store 
data.

> rbd export --snap BACKUP image1 /mnt/backup/image1.img
> losetup /mnt/backup/image1.img
>
> kpartx -a /dev/loop0
>
> Now you will have the partitions from the RBD image available in
> /dev/mapper/loop0pX
Works fine!

Greets,
Stefan

  parent reply	other threads:[~2012-11-22 19:58 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-11-21 13:37 RBD Backup Stefan Priebe - Profihost AG
2012-11-21 13:47 ` Wido den Hollander
2012-11-21 13:56   ` Stefan Priebe - Profihost AG
2012-11-21 14:29     ` Wido den Hollander
2012-11-22 10:57   ` Stefan Priebe - Profihost AG [this message]
2012-11-22 13:13     ` Wido den Hollander
2012-11-22 21:08       ` Josh Durgin
2012-11-22 21:23         ` Stefan Priebe - Profihost AG

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