aufs_migratepage:803...This operation is not supported

[B Buhlig]

   For   my   mythtv  backend,  I  followed  the  below  instructions  at
   [1]http://zackreed.me/articles/90-ubuntu-14-04-with-4-0-4-kernel-and-latest-
   aufs-from-source
   Â to setup AUFS on Ubuntu 14.04 with a 4.0.4 kernel, with the notify option
   and NFS exports, however had been noticing periodic  hangs and crashes
   which seems related to the below messages scrolling in my syslog. Â
   <snip>
   Sep    28    08:31:14    ubuntu1    kernel:    [169791.090397]    aufs
   aufs_migratepage:803:mythcommflag[26309]: This operation is not supported.
   Please report this application to aufs-users ML.
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090403] CPU: 0 PID: 26309 Comm:
   mythcommflag Tainted: G Â  Â  Â  Â  Â  OE Â  4.0.4-aufs #1
   Sep  28 08:31:14 ubuntu1 kernel: [169791.090405] Hardware name: System
   manufacturer System Product Name/M5A78L-M/USB3, BIOS 1801 Â  Â 11/12/2013
   Sep  28  08:31:14  ubuntu1  kernel: [169791.090407] Â ffffea00000d8fc0
   ffff8800034ff940 ffffffff817b4749 0000000000000001
   Sep  28  08:31:14  ubuntu1  kernel: [169791.090410] Â ffffea00022d2740
   ffff8800034ff950 ffffffffc0837834 ffff8800034ff9d0
   Sep  28  08:31:14  ubuntu1  kernel: [169791.090413] Â ffffffff811d91a6
   ffff8800034ff9d0 00000000811a14ac ffffea00022e0bc0
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090415] Call Trace:
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090422] Â [<ffffffff817b4749>]
   dump_stack+0x45/0x57
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090436] Â [<ffffffffc0837834>]
   aufs_migratepage+0x44/0x50 [aufs]
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090439] Â [<ffffffff811d91a6>]
   move_to_new_page+0x76/0x220
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090442] Â [<ffffffff811d9b61>]
   migrate_pages+0x6f1/0x770
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090445] Â [<ffffffff8119f1e0>] ?
   memcg_slab_show+0x80/0x80
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090448] Â [<ffffffff811a1290>] ?
   isolate_freepages_block+0x3c0/0x3c0
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090450] Â [<ffffffff811a1d81>]
   compact_zone+0x2c1/0x790
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090453] Â [<ffffffff811a22bd>]
   compact_zone_order+0x6d/0x90
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090456] Â [<ffffffff811a254b>]
   try_to_compact_pages+0xfb/0x240
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090459] Â [<ffffffff817b171b>]
   __alloc_pages_direct_compact+0x3d/0xe6
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090463] Â [<ffffffff811837f1>]
   __alloc_pages_nodemask+0x531/0x990
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090466] Â [<ffffffff811ca58f>] ?
   alloc_pages_vma+0xaf/0x1f0
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090468] Â [<ffffffff81183cba>]
   alloc_kmem_pages_node+0x6a/0x130
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090472] Â [<ffffffff81073223>] ?
   copy_process.part.26+0xf3/0x1b90
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090474] Â [<ffffffff81073243>]
   copy_process.part.26+0x113/0x1b90
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090477] Â [<ffffffff81074e75>]
   do_fork+0xd5/0x340
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090480] Â [<ffffffff81075166>]
   SyS_clone+0x16/0x20
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090483] Â [<ffffffff817bc54d>]
   stub_clone+0x6d/0x90
   Sep 28 08:31:14 ubuntu1 kernel: [169791.090484] Â [<ffffffff817bc24d>] ?
   system_call_fastpath+0x16/0x1b
   <snip>
   Full log at [2]http://pastebin.com/TpF1UZea ; I issued a hard reset to
   recover around 09:24, so you can see my startup logs after that point. I
   have AUFS managing only a single (4TB) disk but plan to stick with it and
   add more disks if I can get it stable.  Appreciate any advice, thanks.

References

   1. 
http://zackreed.me/articles/90-ubuntu-14-04-with-4-0-4-kernel-and-latest-aufs-from-source
   2. http://pastebin.com/TpF1UZea

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