FreeBSD HA file cluster possibilities
mister.olli at googlemail.com
Tue Jul 7 12:49:46 UTC 2009
I'm curious about your solution. Let me know if you have one :-)
I'm wondering if d) is possible in FreeBSD as from my view it would be
the best solution. Wether you use synchronous (assuming you have
sufficient bandwith) or asynchronous writes.
A wonderful solution would be if AFS would provide in-time replication.
However at the moment replication is hand-task in AFS.
Another solution would be possible but I'm not sure that it has decent
performance. You could use subversion with autoversioning and let it
write into a mysql DB (or any other FS that writes into a database) and
configure database replication between the two fileservers.
Has anyone setup this and is capable of providing information on data
On Tue, 2009-07-07 at 14:17 +0200, RIck van der Zwet wrote:
> I been (re)searching and reading what the options are with regards to
> H(igh) A(vailablility) file storage using FreeBSD, but cannot yet find a
> proper working solution. Any advice welcome!
> I like to be able to mirror a full identical disk between two server. So
> in case of hardware failure of server A (Master). Server B (Slave)
> immediately takes over, without any loss of data. The Network
> configuration is easy using ucarp/vppr. But the file system is the hard
> part. Paths I have investigated:
> a) ggate & gmirror: Export system on Server B to Server A. Use gmirror
> on Server A to keep identical disks. When the ggated on Server B
> actually goes down, the whole setup freezes, until the ggated is back up
> again. Second on network delays gmirror looses, having to sync all over
> again. Leaving the machine at risk.
> b) SAN/iSCSI targets/gmirror: [Brainstorm] Have 2 iSCSI storage boxes
> namely C and D. Have Server A run gmirror on the C and D. And let B
> pickup on failure? Does this work?
> c) ssync/rsync: This does not suit the needs as it does not provide
> realtime mirroring. Causing data-loss on failure. As rsync/ssync does
> not run in realtime.
> d) drbd: http://www.drbd.org/ - Does anyone has a working (alternative)
> setup on FreeBSD?
> Any other solution/setup I am missing? Using external hardware/software
> is all-right as long I am able to connect to FreeBSD with it and it
> leaves no single point of failure.
> Thanks in advance!
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