FYI, I'm now running Kernel version 3.19.0-031900rc6-generic from the URL you mentioned in #4. Let's see if the issue persists.
The file system mounts fine, but I'm concerned about the output of btrfsck: Checking filesystem on /dev/mapper/ubuntu--vg-container UUID: b95b58fb-d0b2-4735-a4ed-2033537eb89a checking extents checking free space cache free space inode generation (0) did not match free space cache generation (135494) free space inode generation (0) did not match free space cache generation (135494) There is no free space entry for 11902451712-11904450560 There is no free space entry for 11902451712-12914262016 cache appears valid but isnt 11840520192 There is no free space entry for 14083878912-14084898816 There is no free space entry for 14083878912-15061745664 cache appears valid but isnt 13988003840 There is no free space entry for 15305744384-15306821632 There is no free space entry for 15305744384-16135487488 cache appears valid but isnt 15061745664 There is no free space entry for 16377102336-16378097664 There is no free space entry for 16377102336-17209229312 cache appears valid but isnt 16135487488 Wanted bytes 1957888, found 393216 for off 17210597376 Wanted bytes 1072373760, found 393216 for off 17210597376 cache appears valid but isnt 17209229312 There is no free space entry for 22839361536-22840332288 There is no free space entry for 22839361536-23651680256 cache appears valid but isnt 22577938432 There is no free space entry for 27126554624-27128291328 There is no free space entry for 27126554624-27946647552 cache appears valid but isnt 26872905728 There is no free space entry for 27985326080-27987566592 There is no free space entry for 27985326080-29020389376 cache appears valid but isnt 27946647552 There is no free space entry for 30126866432-30127960064 There is no free space entry for 30126866432-31167873024 cache appears valid but isnt 30094131200 Wanted bytes 2195456, found 12288 for off 64471998464 Wanted bytes 1055612928, found 12288 for off 64471998464 cache appears valid but isnt 64453869568 There is no free space entry for 65631424512-65632366592 There is no free space entry for 65631424512-66601353216 cache appears valid but isnt 65527611392 free space inode generation (0) did not match free space cache generation (135494) found 15376998613 bytes used err is -22 total csum bytes: 44021104 total tree bytes: 601505792 total fs tree bytes: 419954688 total extent tree bytes: 103333888 btree space waste bytes: 129058353 file data blocks allocated: 126222901248 referenced 43301400576 Btrfs v3.12 I'm not sure if the corruption is the cause or the consequence of the kernel panics, which require a hard reboot. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1415510 Title: Frequent kernel panics when doing heavy I/O in LXC containers on Btrfs To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1415510/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
