From: Rich Freeman <r-btrfs@thefreemanclan.net>
To: "Holger Hoffstätte" <holger.hoffstaette@googlemail.com>
Cc: Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Subject: Re: 3.16 Managed to ENOSPC with <80% used
Date: Fri, 26 Sep 2014 10:18:37 -0400 [thread overview]
Message-ID: <CAGfcS_koxt3d4kBv1o+5FnpDj-6+WA6tsPbPkBdehNnWcYnaKA@mail.gmail.com> (raw)
In-Reply-To: <pan.2014.09.25.21.21.47@googlemail.com>
On Thu, Sep 25, 2014 at 5:21 PM, Holger Hoffstätte
<holger.hoffstaette@googlemail.com> 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
next prev parent reply other threads:[~2014-09-26 14:18 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-24 20:43 3.16 Managed to ENOSPC with <80% used Dan Merillat
2014-09-24 22:23 ` Holger Hoffstätte
2014-09-25 21:05 ` Dan Merillat
2014-09-25 21:21 ` Holger Hoffstätte
2014-09-26 14:18 ` Rich Freeman [this message]
2014-09-27 2:36 ` Duncan
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