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From: Chris Murphy <lists@colorremedies.com>
To: "cheater00 ." <cheater00@gmail.com>
Cc: Chris Murphy <lists@colorremedies.com>,
	Btrfs BTRFS <linux-btrfs@vger.kernel.org>
Subject: Re: 6TB partition, Data only 2TB - aka When you haven't hit the "usual" problem
Date: Thu, 7 Jan 2016 14:55:59 -0700	[thread overview]
Message-ID: <CAJCQCtR3Gj5K0dsAhDBo27Z6h3ki5cs6X0SrrFhC0dPPgY=4nw@mail.gmail.com> (raw)
In-Reply-To: <CA+9GZUiWQ2tAotFuq2Svkjnk+2Quz5B8UwZSSpm4SJfhqfoStQ@mail.gmail.com>

I'm not finding much about this.

http://www.spinics.net/lists/linux-btrfs/msg46537.html
http://www.spinics.net/lists/linux-btrfs/msg46279.html

The last one Anand Jain (developer) replied:
http://www.spinics.net/lists/linux-btrfs/msg46303.html

So I'm not sure if this problem is the same, and if the cause is
known. Best I can suggest is to try a newer kernel. Even 4.4.0rc8 is
stable enough to try; but there were quite a few btrfs patches for
4.3.3 as well. I would try 4.4.0 first to see if it reproduces. If
not, then try 4.3.3.

>4.3.0-040300rc7-generic #201510260712 SMP Mon Oct 26
>11:27:59 UTC 2015 i686 i686 i686 GNU/Linux

I think the other two cases are x86-64 so I don't think i686 is related.

There are quite a few messages:
swapper/6: page allocation failure: order:0, mode:0x20
[1129393.648245] CPU: 6 PID: 0 Comm: swapper/6 Tainted: G        W  OE
  4.3.0-040300rc7-generic #201510260712

So the kernel is in a tainted state, I can't tell if that's related.

And also
usb 4-1.2: reset high-speed USB device number 7 using ehci-pci

One happens less than a minute before the first btrfs call trace. I've
had these messages also with USB drives, and they usually don't cause
a problem, and in my research it seems they can usually be ignored
except when there's subsequent problems. I ended up getting a powered
hub to put all the USB drives on and now I don't get these messages
anymore (so far anyway) and I also haven't had any Btrfs errors, which
I did rarely have happen prior to moving to the USB 3 powered hub;
even though the power shouldn't have been a factor since the drives
want 900mA at most (usually just spinning up), and standard USB 3
supplies 900mA.

Anyway, easiest is to move to a newer kernel to try to reproduce and
then start looking at hardware issues. What specific drive is
/dev/sdd? I'd make a note of that particular drive and see if it's the
same drive (not drive letter) if the problem happens again.


---
Chris Murphy

  parent reply	other threads:[~2016-01-07 21:56 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-30 21:44 6TB partition, Data only 2TB - aka When you haven't hit the "usual" problem cheater00 .
2015-12-30 22:13 ` Chris Murphy
2016-01-02  2:09   ` cheater00 .
2016-01-02  2:10     ` cheater00 .
     [not found]       ` <CA+9GZUiWQ2tAotFuq2Svkjnk+2Quz5B8UwZSSpm4SJfhqfoStQ@mail.gmail.com>
2016-01-07 21:55         ` Chris Murphy [this message]
     [not found]           ` <CA+9GZUjLcRnRX_mwO-McXWFd+G4o3jtBENMLnszg-rJTn6vL1w@mail.gmail.com>
     [not found]             ` <CAJCQCtRhYZi9nqWP_LYmZeg1yRQVkpnmUDQ-P5o1-gc-3w+Pdg@mail.gmail.com>
2016-01-09 20:00               ` cheater00 .
2016-01-09 20:26                 ` Hugo Mills
2016-01-09 20:59                   ` cheater00 .
2016-01-09 21:04                     ` Hugo Mills
2016-01-09 21:07                       ` cheater00 .
2016-01-09 21:15                         ` Hugo Mills
2016-01-10  3:59                           ` cheater00 .
2016-01-10  6:16                         ` Russell Coker
2016-01-10 22:24                           ` cheater00 .
2016-01-10 22:32                             ` Lionel Bouton
2016-01-11 13:05                         ` Austin S. Hemmelgarn
2016-01-11 13:11                           ` cheater00 .
2016-01-11 13:30                             ` cheater00 .
2016-01-11 13:45                               ` cheater00 .
2016-01-11 14:04                                 ` cheater00 .
2016-01-12  2:18                                   ` Duncan
2016-08-04 16:53                                 ` Lutz Vieweg
2016-08-04 20:30                                   ` Chris Murphy
2016-08-05 10:56                                     ` Lutz Vieweg
2016-08-05 12:12                                       ` Austin S. Hemmelgarn
2016-08-05 13:14                                         ` Lutz Vieweg
2016-08-05 20:03                                   ` Gabriel C
2016-08-25 15:48                                     ` Lutz Vieweg
2016-01-11 14:10                             ` Austin S. Hemmelgarn
2016-01-11 16:02                               ` cheater00 .
2016-01-11 16:33                                 ` cheater00 .
2016-01-11 20:29                                   ` Henk Slager
2016-01-12  1:16                                     ` Duncan
2016-01-11  0:13                       ` Chris Murphy
2016-01-11  9:03                         ` Hugo Mills
2016-01-11 13:04                           ` cheater00 .
2016-01-11 21:31                           ` Chris Murphy
2016-01-11 22:10                             ` Hugo Mills
2016-01-11 22:20                               ` Chris Murphy
2016-01-11 22:30                                 ` Hugo Mills
2016-01-11 22:39                                   ` Chris Murphy
2016-01-11 23:07                                     ` Hugo Mills
2016-01-11 23:12                                       ` cheater00 .
2016-01-11 23:05                                   ` cheater00 .
2016-01-12  2:05                                   ` Duncan
2016-01-11 22:57                             ` cheater00 .
2016-01-10 14:14                   ` Henk Slager
2016-01-10 23:47                     ` cheater00 .
2016-01-11  0:24                       ` Chris Murphy
2016-01-11  6:07                         ` cheater00 .
2016-01-11  6:24                           ` cheater00 .
2016-01-11  7:54                             ` cheater00 .
2016-01-12  0:35                               ` Duncan
2016-01-11 19:50                       ` Henk Slager
2016-01-11 23:03                         ` cheater00 .

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