Gentoo Archives: gentoo-user

From: Dirk Heinrichs <dirk.heinrichs@××××××.de>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] [OT] RAID 1 over network
Date: Tue, 16 Jun 2009 15:54:46
Message-Id: 200906161754.39984.dirk.heinrichs@online.de
In Reply to: Re: [gentoo-user] [OT] RAID 1 over network by Philipp Riegger
1 Am Dienstag 16 Juni 2009 15:58:37 schrieb Philipp Riegger:
2 > On Tue, 2009-06-16 at 16:45 +0300, Daniel Iliev wrote:
3 > > DRBD is HA solution which is achieved by switching the role of the
4 > > nodes in case the "active node" goes offline. I think DRBD is not meant
5 > > for the schema OP has described, because only the "active node" is
6 > > accessible via FS. DRBD works between the FS and block device layers.
7 > > It catches the FS writes from the active node and sends them over the
8 > > network. DRBD on the backup node receives those and replicates them
9 > > directly to the disk driver. Thus you can't have mounted FS on the
10 > > backup node. If the active node goes offline, the backup node takes
11 > > over which means DRBD switches roles and the FS has to be mounted
12 > > afterwards.
13 >
14 > But that might be a good solution with 2.6.30, NFS and FSCACHE.
15 >
16 > Another solution would be to use ndb (network block devices), dm-raid
17 > and a cluster filesystem.
18
19 And finally, there's OpenAFS. Not really RAID, but maybe sufficient.
20
21 Bye...
22
23 Dirk

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Re: [gentoo-user] [OT] RAID 1 over network Daniel Iliev <daniel.iliev@×××××.com>