[ILUG] Mirroring a filesystem across a network
bminish at minish.org
Thu Feb 10 18:56:49 GMT 2011
On Thu, 2011-02-10 at 16:32 +0000, Brian O'Mahony wrote:
> We are using LVM already. However, the issue I see with this is I want to offload the actual tarring to backup system. Having never implemented DRDB, would it allow the following in some sort of script:
> LVM snapshots the filesystem
> DRDB service starts up. Mirrors the snapshot to the second server.
> DRDB service shuts down
> Second server mounts the snapshot, runs tar, and compresses everything.
> Or have I misunderstood you?
We use DRDB on a couple of machines we cluster
basically it builds a mirrored RAID that is mirrored over GigE
on top of that we have LVM
Each LV is only accessed by one machine at a time so I am not sure about
how snapshotting would be handled
this guide might help
we use this as part of a 2 node proxmox cluster for KVM virtualisation
and both nodes are 'primary' DRDB keeps the guest Virtual machines
filesystems in sync to ease live migrations
> I am currently looking at about 800Gb of data, and that is from the last two-three years. So I am expecting it to grow quite quickly. What ever method I end up using, I have to be able to scale for obvious reasons.
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