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From: Marc MERLIN <marc@merlins.org>
To: Chris Mason <clm@fb.com>
Cc: Martin Steigerwald <Martin@lichtvoll.de>,
	Cody P Schafer <dev@codyps.com>, Chris Samuel <chris@csamuel.org>,
	linux-btrfs@vger.kernel.org
Subject: Re: Blocked tasks on 3.15.1
Date: Tue, 22 Jul 2014 09:46:46 -0700	[thread overview]
Message-ID: <20140722164646.GB27916@merlins.org> (raw)
In-Reply-To: <53CE7ACF.7070109@fb.com>

On Tue, Jul 22, 2014 at 10:53:03AM -0400, Chris Mason wrote:
> Thanks for the help in tracking this down everyone.  We'll get there!
> Are you all running multi-disk systems (from a btrfs POV, more than one
> device?)  I don't care how many physical drives this maps to, just does
> btrfs think there's more than one drive.

In the bugs I sent you, it was a mix of arrays that were
mdraid / dmcrypt / btrfs

I have also one array with:
disk1 / dmcrypt \
                 - btrfs (2 drives visible by btrfs)
disk2 / dmcrypt /

The multidrive setup seemed a bit worse, I just destroyed it and went
back to putting all the drives together with mdadm and showing a single
dmcrypted device to btrfs.

But that is still super unstable on my server with 3.15, while being
somewhat usable with my laptop (it still hangs, but more rarely)
The one difference is that my laptop actually does
disk > dmcrypt > btrfs
while my server does 
disks > mdadm > dmcrypt > btrfs

Marc
-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
                                      .... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/                         | PGP 1024R/763BE901

  parent reply	other threads:[~2014-07-22 16:47 UTC|newest]

Thread overview: 49+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-27 10:02 Blocked tasks on 3.15.1 Tomasz Chmielewski
2014-06-27 13:06 ` Duncan
2014-06-27 15:14   ` Rich Freeman
2014-06-27 15:52     ` Chris Murphy
2014-06-27 17:20       ` Duncan
2014-06-28  0:22         ` Chris Samuel
2014-06-29 20:02           ` Cody P Schafer
2014-06-29 22:22             ` Cody P Schafer
2014-06-30 18:11             ` Chris Mason
2014-06-30 18:30               ` Chris Mason
2014-06-30 23:42                 ` Cody P Schafer
2014-07-01 21:04                   ` Chris Mason
2014-07-01 23:05                     ` Cody P Schafer
2014-07-02 12:27                       ` Cody P Schafer
2014-07-02 13:58                         ` Chris Mason
2014-07-02 14:15                           ` Chris Mason
2014-07-17 13:18                             ` Chris Mason
2014-07-19  0:33                               ` Blocked tasks on 3.15.1, raid1 btrfs is no ends of trouble for me Marc MERLIN
2014-07-19  0:44                                 ` Marc MERLIN
2014-07-19  1:58                                   ` Marc MERLIN
2014-07-19  1:59                                   ` Chris Samuel
2014-07-19  5:40                                     ` Marc MERLIN
2014-07-19 17:38                               ` Blocked tasks on 3.15.1 Cody P Schafer
2014-07-19 18:23                                 ` Martin Steigerwald
2014-07-22 14:53                                   ` Chris Mason
2014-07-22 15:14                                     ` Torbjørn
2014-07-22 16:46                                     ` Marc MERLIN [this message]
2014-07-22 19:42                                     ` Torbjørn
2014-07-22 19:50                                       ` Chris Mason
2014-07-22 20:10                                         ` Torbjørn
2014-07-22 21:13                                     ` Martin Steigerwald
2014-07-22 21:15                                       ` Chris Mason
2014-07-23 11:13                                         ` Martin Steigerwald
2014-07-23  1:06                                     ` Rich Freeman
2014-07-23  6:38                                       ` Felix Seidel
2014-07-23 13:20                                     ` Charles Cazabon
2014-07-25  2:27                                     ` Cody P Schafer
2014-08-07 15:12                                       ` Tobias Holst
2014-08-07 16:05                                         ` Duncan
2014-08-12  2:55                                     ` Charles Cazabon
2014-08-12  2:56                                       ` Liu Bo
2014-08-12  4:18                                         ` Duncan
2014-08-12  4:49                                       ` Marc MERLIN
2014-08-18 20:34                                         ` James Cloos
2014-07-01  3:06               ` Charles Cazabon
2014-06-30  2:33           ` Rich Freeman
2014-06-27 18:33       ` Rich Freeman
  -- strict thread matches above, loose matches on Subject: below --
2014-07-20 21:34 Matt
2014-06-27  1:37 Rich Freeman

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