[linux-lvm] Snapshot behavior on classic LVM vs ThinLVM
list at xenhideout.nl
Fri Apr 14 15:17:55 UTC 2017
Stuart D. Gathman schreef op 13-04-2017 19:32:
> On Thu, 13 Apr 2017, Xen wrote:
>> Stuart Gathman schreef op 13-04-2017 17:29:
>>> IMO, the friendliest thing to do is to freeze the pool in read-only
>>> just before running out of metadata.
>> It's not about metadata but about physical extents.
>> In the thin pool.
> Ok. My understanding is that *all* the volumes in the same thin-pool
> would have to be frozen when running out of extents, as writes all
> pull from
> the same pool of physical extents.
Yes, I simply tested with a small thin pool not used for anything else.
The volumes were not more than a few hundred megabytes big, so easy to
Putting a file copy to one of the volumes that the pool couldn't handle,
the system quickly crashed.
Upon reboot it was neatly filled 100% and I could casually remove the
volumes or whatever.
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