Gentoo Archives: gentoo-user

From: Philipp Riegger <lists@××××××××××××.de>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] [OT] RAID 1 over network
Date: Tue, 16 Jun 2009 13:58:39
In Reply to: Re: [gentoo-user] [OT] RAID 1 over network by Daniel Iliev
1 On Tue, 2009-06-16 at 16:45 +0300, Daniel Iliev wrote:
2 > DRBD is HA solution which is achieved by switching the role of the
3 > nodes in case the "active node" goes offline. I think DRBD is not meant
4 > for the schema OP has described, because only the "active node" is
5 > accessible via FS. DRBD works between the FS and block device layers.
6 > It catches the FS writes from the active node and sends them over the
7 > network. DRBD on the backup node receives those and replicates them
8 > directly to the disk driver. Thus you can't have mounted FS on the
9 > backup node. If the active node goes offline, the backup node takes
10 > over which means DRBD switches roles and the FS has to be mounted
11 > afterwards.
13 But that might be a good solution with 2.6.30, NFS and FSCACHE.
15 Another solution would be to use ndb (network block devices), dm-raid
16 and a cluster filesystem.
18 Philipp


Subject Author
Re: [gentoo-user] [OT] RAID 1 over network Dirk Heinrichs <dirk.heinrichs@××××××.de>
Re: [gentoo-user] [OT] RAID 1 over network Daniel Iliev <daniel.iliev@×××××.com>