On Thu, 23 May 2013, James Harper <james.harper@bendigoit.com.au> wrote:
You say "One is to use a single BTRFS filesystem with RAID-1 for all the storage and then have each VM use a file on that big BTRFS filesystem for all it's storage" - when you do this, what fs do you use on domU? (and is that the right "it's"?)
Ext3, Ext4, any filesystem that you like.
Also, does btrfs have error detection or correction without using raid?
By default a BTRFS filesystem will use RAID-1 for metadata on a single device by writing the data to two blocks. So a failure that results in one metadata block becoming corrupt or unreadable will result in the other being read. But if a data block becomes corrupt then you lose. You can configure BTRFS to use RAID-1 for data on a single device in theory at least, but last time I tried it the mkfs program didn't want to do that. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/