On 11/18/2014 07:42 AM, Phillip Susi wrote:
On 11/18/2014 1:16 AM, Chris Murphy wrote:
(stuff about UUIDs and LVM snapshots).
> (suggestion to use LVM paths instead).
This is also an XFS+LVM+LVM_Snapshot problem going back to at least
2009. It's inherent to the block-device-level snapshot phenomonia.
q.v. http://www.miljan.org/main/2009/11/16/lvm-snapshots-and-xfs/ et al
In XFS you attack the snapshot with a command to regenerate the UUID as
soon as you take the snapshot. I don't think there is a "regenerate all
my UUIDs" command for BTRFS.
There are other places this can bone you, like old-format mdadm mirrors,
where the metadata was only at the end of the partition so you could
accidentally see two copied of your RAID1 file system if you hand't
built/started the array.
There is no really good way to prevent this other than "being really
careful" or "not doing that at all".
Sorry. Cost of doing business. Cheers...
Rob.
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