From: Josef Bacik <jbacik@fusionio.com>
To: "Swâmi Petaramesh" <swami@petaramesh.org>
Cc: Josef Bacik <JBacik@fusionio.com>,
Linux Btrfs <linux-btrfs@vger.kernel.org>
Subject: Re: "free space cache generation" ?
Date: Wed, 19 Sep 2012 14:02:24 -0400 [thread overview]
Message-ID: <20120919180224.GE2272@localhost.localdomain> (raw)
In-Reply-To: <505A06DE.1050503@petaramesh.org>
On Wed, Sep 19, 2012 at 11:54:38AM -0600, Swâmi Petaramesh wrote:
> Le 19/09/2012 19:36, Josef Bacik a écrit :
> > It can happen for all sorts of different reasons. Did you have a
> > unclean unmount at some point?
>
> Not that I'm aware of...
>
> > Do you have a particularly full file system?
>
> ~1 TB FS, 23% full...
>
> Only, I have several Linux distros installed on the same BTRFS - in
> different subvols - so I sometimes mount it with a 3.5.x kernel, and
> more rarely - but sometimes - with a 3.2.x...
>
Well I think I changed the space cache format between those releases which would
cause them all to be discarded and remade.
> => Also I have to mention that I have lost a complete BTRFS FS, that was
> a /boot with snapshots. At some point it started to fail mounting, the
> kernel complaining that some trees (corresponding to removed snapshots
> as far as I could tell) were b0rked, and btrfsck couldn't help...
>
> So I lost the FS - and lost quite a bit of confidence into BTRFS the
> same day... :-\
>
Yes well, welcome to using an experimental file system.
Josef
prev parent reply other threads:[~2012-09-19 18:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-19 8:05 "free space cache generation" ? Swâmi Petaramesh
2012-09-19 16:01 ` Josef Bacik
2012-09-19 17:30 ` Swâmi Petaramesh
2012-09-19 17:36 ` Josef Bacik
2012-09-19 17:54 ` Swâmi Petaramesh
2012-09-19 18:02 ` Josef Bacik [this message]
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