From: Carl Cook <CACook@quantum-sci.com>
To: linux-btrfs@vger.kernel.org
Subject: Adding a disk fails
Date: Thu, 20 Jan 2011 13:18:40 -0800 [thread overview]
Message-ID: <201101201318.40686.CACook@quantum-sci.com> (raw)
Well I've just tried to add a disk to another, but it fails. I created the first (starting with no traditional partitions) with:
# mkfs.btrfs /dev/sdb
Then I mounted it to /media/backups and put lots of files on it. I shut down the system, added another disk. Set it up with:
# mkfs.btrfs /dev/sdc
WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL
WARNING! - see http://btrfs.wiki.kernel.org before using
fs created label (null) on /dev/sdc
nodesize 4096 leafsize 4096 sectorsize 4096 size 1.82TB
Btrfs Btrfs v0.19
# btrfs device scan
Scanning for Btrfs filesystems
#
(... Nothing? Not even my known mounted sdb drive?)
# btrfs device add /dev/sdc /media/backups
ERROR: error adding the device '/dev/sdc'
It gives no clue as to what might possibly be the problem. I want raid0.
Also I can not understand this:
"Note: While subvolumes can be created anywhere in the filesystem tree, in order to be mounted by name a subvolume or snapshot must be in the root of the btrfs filesystem."
I want to do this, but do not know what this means. Tentatively I've created a BTRFS volume and mounted it on /media/backups. I then created subvolumes as backup-hex, backup-droog, snaps-hex and snaps-droog. When I created a snapshot it created a subdir under snaps-hex called hex-root.
It won't allow me to remove snapshots. (Debian Testing)
Also does anyone know how to create a shapshot with the current date in the name?
next reply other threads:[~2011-01-20 21:18 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-20 21:18 Carl Cook [this message]
2011-01-20 22:13 ` Adding a disk fails Goffredo Baroncelli
2011-01-20 23:10 ` Carl Cook
2011-01-21 6:55 ` Hubert Kario
2011-01-21 10:16 ` CACook
2011-01-21 10:41 ` Hubert Kario
2011-01-21 7:00 ` Helmut Hullen
2011-01-21 8:00 ` Fajar A. Nugraha
2011-01-21 18:42 ` Goffredo Baroncelli
2011-01-21 19:16 ` CACook
2011-01-21 6:57 ` Helmut Hullen
2011-01-21 10:51 ` Helmut Hullen
2011-01-21 13:23 ` Helmut Hullen
2011-01-20 22:31 ` Carl Cook
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