Re: 3.16 Managed to ENOSPC with <80% used

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On Thu, Sep 25, 2014 at 5:21 PM, Holger Hoffstätte
<holger.hoffstaette@xxxxxxxxxxxxxx> wrote:
> That's why I mentioned adding a second device - that will immediately
> allow cleanup with headroom. An additional 8GB tmpfs volume can works
> wonders.
>

If you add a single 8GB tmpfs to a RAID1 btrfs array, is it safe to
assume that you'll still always have a redundant copy of everything on
a disk somewhere during the recovery?  Would only a single tmpfs
volume actually help in this case?  I get a bit nervous about doing a
cleanup that involves moving metadata to tmpfs of all places, since
some kind of deadlock/etc could result in unrecoverable data loss.

Doing the same thing with an actual hard drive would concern me less.

--
Rich
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