From: Chris Mason <clm@fb.com>
To: Sam Thursfield <sam.thursfield@codethink.co.uk>,
<linux-btrfs@vger.kernel.org>
Cc: <baserock-dev@baserock.org>
Subject: Re: Unable to mount multiple subvolumes of a single disk
Date: Mon, 15 Sep 2014 11:54:50 -0400 [thread overview]
Message-ID: <54170BCA.7070900@fb.com> (raw)
In-Reply-To: <5417022A.5000101@codethink.co.uk>
On 09/15/2014 11:13 AM, Sam Thursfield wrote:
> Hi!
>
> I'm having an issue with the 3.17rc5 kernel which prevents having
> multiple subvolumes of the same disk mounted.
>
> I'm not sure exactly the cause. I thought it might be because in my
> system the root file system is itself a subvolume of the disk I'm trying
> to mount. But if I create a second disk image with two subvolumes, the
> same thing occurs -- I can only mount one of them at a time.
>
> I've attached the output of a few commands, please let me know if you
> want more info (I'm not subscribed to the list, please keep me in To:).
>
> We've bisected and found that the exact commit that changed the
> behaviour is this one:
> https://urldefense.proofpoint.com/v1/url?u=https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id%3Db96de000bc8bc9688b3a2abea4332bd57648a49f&k=ZVNjlDMF0FElm4dQtryO4A%3D%3D%0A&r=6%2FL0lzzDhu0Y1hL9xm%2BQyA%3D%3D%0A&m=qVtp3yxxUd8uElAkp118K4Bd0oZfeUOC%2BKUy3e6rRlA%3D%0A&s=0d2623956de100adc1185d2b75e9114384572b88c0330e74924baa1a2bce8d02
>
>
> I'm afraid I'm not familiar with the Btrfs code base and so I don't
> understand the exact meaning of the comments in that commit.
Anand Jain is working on this in a separate thread. I'll make sure the
fix goes into the next rc, thanks for all the time spent bisecting.
-chris
next prev parent reply other threads:[~2014-09-15 15:55 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-15 15:13 Unable to mount multiple subvolumes of a single disk Sam Thursfield
2014-09-15 15:54 ` Chris Mason [this message]
2014-09-15 16:09 ` Anand Jain
2014-09-15 17:13 ` Sam Thursfield
2014-09-15 17:21 ` Anand Jain
2014-09-15 17:42 ` Anand Jain
2014-09-16 7:46 ` Paul Sherwood
2014-09-16 21:08 ` Stefan G. Weichinger
2014-09-16 21:53 ` Anand Jain
2014-09-17 4:41 ` Anand Jain
2014-09-15 20:38 ` xavier.gnata
2014-09-16 13:23 ` Chris Mason
2014-09-17 9:47 ` Anand Jain
2014-09-17 13:21 ` Chris Mason
2014-09-22 12:04 ` Stefan G. Weichinger
2014-09-15 16:42 ` Anand Jain
2014-09-15 17:15 ` Sam Thursfield
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