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From: devzero@web.de
To: linux-btrfs@vger.kernel.org
Subject: multiple device usage
Date: Sat, 27 Dec 2008 00:15:18 +0100	[thread overview]
Message-ID: <556243856@web.de> (raw)

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hello,

i have some difficulty in understanding multi-device handling in depth.

as http://btrfs.wiki.kernel.org/index.php/Using_Btrfs_with_Multiple_Devices 
tells,

btrfs can span over multiple devices at the same time. (great feature, btw !)

ok then:
 
mkfs.btrfs -m single -d single  /dev/sdb /dev/sdc - creates a btrfs spanning 
over /dev/sdb and sdc

mount /dev/sdb /btrfs - mounts it

btrfs-vol -b /btrfs - does a rebalancing of all data and metadata

btrfs-vol -r /dev/sdc - removes one of the volumes and redistributes any 
extends in use on sdc to sdb (killer feature!!!)

but what if i want to remove /dev/sdb ? (as that one is in use for the 
mount)

regards
roland
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             reply	other threads:[~2008-12-26 23:15 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-12-26 23:15 devzero [this message]
2008-12-27  2:44 ` multiple device usage Yan Zheng
2008-12-27 14:12   ` Roland
2008-12-28 13:26     ` yanhai zhu
2008-12-29 10:49       ` Stephan von Krawczynski
2008-12-29 12:31       ` Roland
2008-12-29 12:35         ` Yan Zheng
2008-12-30 21:43           ` Chris Mason
2008-12-27  6:45 ` Chris Samuel
2008-12-29 11:32   ` Chris Samuel
2008-12-29 12:33     ` Yan Zheng
2008-12-29 12:52       ` Chris Samuel
2008-12-29 15:16         ` Yan Zheng
2008-12-30 21:25           ` Chris Mason
2009-01-01  1:02             ` Chris Samuel

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