Re: [Libguestfs] CoreOS support

On Tue, Sep 09, 2014 at 08:22:37PM +0300, Keresztes Péter-Zoltán wrote: [...] The btrfs driver in your kernel is unable to mount one of the filesystems in the CoreOS disk image. This is not particularly surprising because you're running a relatively ancient kernel (2.6.32), and btrfs always needs the latest kernel it can get. You need to use a newer kernel. The error is below: > mount -o ro /dev/sda9 /sysroot/ > [ 7.591226] TECH PREVIEW: btrfs may not be fully supported. > [ 7.591229] Please review provided documentation for limitations. > [ 7.599995] Tainting kernel with flag 0x1d > [ 7.603207] Pid: 299, comm: modprobe veid: 0 Not tainted 2.6.32-30-pve #1 > [ 7.608315] Call Trace: > [ 7.610274] [<ffffffff81072bd9>] ? add_taint+0x69/0x70 > [ 7.614307] [<ffffffff810a8231>] ? mark_tech_preview+0x71/0xa0 > [ 7.618818] [<ffffffffa028f014>] ? init_btrfs_fs+0x14/0xb8 [btrfs] > [ 7.623787] [<ffffffff8100204c>] ? do_one_initcall+0x3c/0x1d0 > [ 7.628341] [<ffffffff810cbab6>] ? sys_init_module+0xd6/0x260 > [ 7.632789] [<ffffffff8100b182>] ? system_call_fastpath+0x16/0x1b > [ 7.638362] Btrfs loaded > [ 7.641010] device label ROOT devid 1 transid 80 /dev/sda9 > [ 7.646645] btrfs: disk space caching is enabled > [ 7.650293] BTRFS: couldn't mount because of unsupported optional features (40). > [ 7.656337] btrfs: open_ctree failed > [ 7.659225] ------------[ cut here ]------------ > [ 7.662786] WARNING: at fs/super.c:1219 vfs_kern_mount+0x168/0x180() (Tainted: G --------------- T) > [ 7.670396] Hardware name: Bochs > [ 7.672928] Modules linked in: btrfs(T) lzo_compress lzo_decompress zlib_deflate vfat fat snd_pcsp snd_pcm snd_page_alloc snd_timer snd soundcore i2c_piix4 i2c_core ext2 ext4 jbd2 virtio_balloon virtio_pci virtio_net virtio_scsi virtio_blk virtio_console virtio_rng virtio_ring virtio sym53c8xx scsi_transport_spi ata_piix mbcache crc7 crc_ccitt crc_itu_t > [ 7.696412] Pid: 297, comm: mount veid: 0 Tainted: G --------------- T 2.6.32-30-pve #1 > [ 7.701398] Call Trace: > [ 7.702810] [<ffffffff81072d27>] ? warn_slowpath_common+0x87/0xe0 > [ 7.706304] [<ffffffff81072d9a>] ? warn_slowpath_null+0x1a/0x20 > [ 7.709662] [<ffffffff811a85b8>] ? vfs_kern_mount+0x168/0x180 > [ 7.713087] [<ffffffff811a8644>] ? do_kern_mount+0x54/0x120 > [ 7.716256] [<ffffffff811cb928>] ? do_mount+0x3e8/0xb00 > [ 7.719226] [<ffffffff811564eb>] ? strndup_user+0x4b/0xb0 > [ 7.722237] [<ffffffff81156501>] ? strndup_user+0x61/0xb0 > [ 7.725305] [<ffffffff811cc0ce>] ? sys_mount+0x8e/0xe0 > [ 7.728296] [<ffffffff8100b182>] ? system_call_fastpath+0x16/0x1b > [ 7.731679] ---[ end trace e290bd6f960f7e2c ]--- > [ 7.734312] Tainting kernel with flag 0x9 > [ 7.736602] Pid: 297, comm: mount veid: 0 Tainted: G --------------- T 2.6.32-30-pve #1 > [ 7.741634] Call Trace: > [ 7.743097] [<ffffffff81072bd9>] ? add_taint+0x69/0x70 > [ 7.746039] [<ffffffff81072d49>] ? warn_slowpath_common+0xa9/0xe0 > [ 7.749514] [<ffffffff81072d9a>] ? warn_slowpath_null+0x1a/0x20 > [ 7.752894] [<ffffffff811a85b8>] ? vfs_kern_mount+0x168/0x180 > [ 7.756186] [<ffffffff811a8644>] ? do_kern_mount+0x54/0x120 > [ 7.759292] [<ffffffff811cb928>] ? do_mount+0x3e8/0xb00 > [ 7.762249] [<ffffffff811564eb>] ? strndup_user+0x4b/0xb0 > [ 7.765346] [<ffffffff81156501>] ? strndup_user+0x61/0xb0 > [ 7.768388] [<ffffffff811cc0ce>] ? sys_mount+0x8e/0xe0 > [ 7.771317] [<ffffffff8100b182>] ? system_call_fastpath+0x16/0x1b > [ 7.774816] BUG: unable to handle kernel paging request at fffffffffffffffa > [ 7.775735] IP: [<ffffffff811c9f3d>] do_add_mount_unlocked+0x5d/0xe0 > [ 7.775735] PGD 1a87067 PUD 1a88067 PMD 0 > [ 7.775735] Oops: 0000 [#1] SMP > [ 7.775735] last sysfs file: /sys/devices/virtual/bdi/btrfs-1/uevent > [ 7.775735] CPU 0 > [ 7.775735] Modules linked in: btrfs(T) lzo_compress lzo_decompress zlib_deflate vfat fat snd_pcsp snd_pcm snd_page_alloc snd_timer snd soundcore i2c_piix4 i2c_core ext2 ext4 jbd2 virtio_balloon virtio_pci virtio_net virtio_scsi virtio_blk virtio_console virtio_rng virtio_ring virtio sym53c8xx scsi_transport_spi ata_piix mbcache crc7 crc_ccitt crc_itu_t > [ 7.775735] > [ 7.775735] Pid: 297, comm: mount veid: 0 Tainted: G W --------------- T 2.6.32-30-pve #1 042stab090_5 Bochs Bochs > [ 7.775735] RIP: 0010:[<ffffffff811c9f3d>] [<ffffffff811c9f3d>] do_add_mount_unlocked+0x5d/0xe0 > [ 7.775735] RSP: 0018:ffff88001ce67e58 EFLAGS: 00010206 > [ 7.775735] RAX: ffffffffffffffea RBX: ffff88001ce67eb8 RCX: ffff88001ed08ac0 > [ 7.775735] RDX: ffff88001e7df600 RSI: ffffffff81aa6fa0 RDI: ffff88001daa5898 > [ 7.775735] RBP: ffff88001ce67e78 R08: ffff88001ce66000 R09: ffffffff81e661c0 > [ 7.775735] R10: 0000000000000000 R11: ffff88001ec2d810 R12: ffff88001e7df500 > [ 7.775735] R13: 0000000000000060 R14: 0000000000000001 R15: 0000000000000001 > [ 7.775735] FS: 00007f8d9e47a7e0(0000) GS:ffff880002600000(0000) knlGS:0000000000000000 > [ 7.775735] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 7.775735] CR2: fffffffffffffffa CR3: 000000001d4a9000 CR4: 00000000000006f0 > [ 7.775735] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > [ 7.775735] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > [ 7.775735] Process mount (pid: 297, veid: 0, threadinfo ffff88001ce66000, task ffff88001e682f70) > [ 7.775735] Stack: > [ 7.775735] ffff88001ce67e78 ffff88001e7df500 0000000000000060 0000000000000000 > [ 7.775735] <d> ffff88001ce67f18 ffffffff811cb95b ffff88001ce67eb8 ffffffff811564eb > [ 7.775735] <d> 0000000000000001 ffff88001ddedc00 000000000000000a 0000000000001000 > [ 7.775735] Call Trace: > [ 7.775735] [<ffffffff811cb95b>] do_mount+0x41b/0xb00 > [ 7.775735] [<ffffffff811564eb>] ? strndup_user+0x4b/0xb0 > [ 7.775735] [<ffffffff81156501>] ? strndup_user+0x61/0xb0 > [ 7.775735] [<ffffffff811cc0ce>] sys_mount+0x8e/0xe0 > [ 7.775735] [<ffffffff8100b182>] system_call_fastpath+0x16/0x1b > [ 7.775735] Code: 4f 48 8b 13 41 f7 c5 00 01 00 01 48 8b 8a c0 00 00 00 74 4a 48 85 c9 0f 84 81 00 00 00 41 f7 c5 00 00 00 01 74 58 49 8b 44 24 20 <48> 8b 40 10 0f b7 80 ae 00 00 00 66 25 00 f0 66 3d 00 a0 74 5e > [ 7.775735] RIP [<ffffffff811c9f3d>] do_add_mount_unlocked+0x5d/0xe0 > [ 7.775735] RSP <ffff88001ce67e58> > [ 7.775735] CR2: fffffffffffffffa > [ 7.775735] Tainting kernel with flag 0x7 > [ 7.775735] Pid: 297, comm: mount veid: 0 Tainted: G W --------------- T 2.6.32-30-pve #1 > [ 7.775735] Call Trace: > [ 7.775735] [<ffffffff81072bd9>] ? add_taint+0x69/0x70 > [ 7.775735] [<ffffffff8155c443>] ? oops_end+0x53/0xf0 > [ 7.775735] [<ffffffff8154f0c7>] ? no_context+0x1eb/0x216 > [ 7.775735] [<ffffffff810cc22e>] ? is_module_text_address+0xe/0x20 > [ 7.775735] [<ffffffff8154f260>] ? __bad_area_nosemaphore+0x16e/0x18d > [ 7.775735] [<ffffffff8154f292>] ? bad_area_nosemaphore+0x13/0x15 > [ 7.775735] [<ffffffff81047bee>] ? __do_page_fault+0x2fe/0x490 > [ 7.775735] [<ffffffff81056d03>] ? perf_event_task_sched_out+0x33/0x70 > [ 7.775735] [<ffffffff810522cf>] ? __dequeue_entity+0x2f/0x50 > [ 7.775735] [<ffffffff810097ef>] ? __switch_to+0x1df/0x2f0 > [ 7.775735] [<ffffffff8155e3cb>] ? do_page_fault+0x3b/0xa0 > [ 7.775735] [<ffffffff8155b7e5>] ? page_fault+0x25/0x30 > [ 7.775735] [<ffffffff811c9f3d>] ? do_add_mount_unlocked+0x5d/0xe0 > [ 7.775735] [<ffffffff811c9f0f>] ? do_add_mount_unlocked+0x2f/0xe0 > [ 7.775735] [<ffffffff811cb95b>] ? do_mount+0x41b/0xb00 > [ 7.775735] [<ffffffff811564eb>] ? strndup_user+0x4b/0xb0 > [ 7.775735] [<ffffffff81156501>] ? strndup_user+0x61/0xb0 > [ 7.775735] [<ffffffff811cc0ce>] ? sys_mount+0x8e/0xe0 > [ 7.775735] [<ffffffff8100b182>] ? system_call_fastpath+0x16/0x1b > [ 7.775735] ---[ end trace e290bd6f960f7e2d ]--- > [ 7.775735] Kernel panic - not syncing: Fatal exception > [ 7.775735] Pid: 297, comm: mount veid: 0 Tainted: G D W --------------- T 2.6.32-30-pve #1 > [ 7.775735] Call Trace: > [ 7.775735] [<ffffffff8154f744>] ? panic+0xa7/0x167 > [ 7.775735] [<ffffffff8155c4c4>] ? oops_end+0xd4/0xf0 > [ 7.775735] [<ffffffff8154f0c7>] ? no_context+0x1eb/0x216 > [ 7.775735] [<ffffffff810cc22e>] ? is_module_text_address+0xe/0x20 > [ 7.775735] [<ffffffff8154f260>] ? __bad_area_nosemaphore+0x16e/0x18d > [ 7.775735] [<ffffffff8154f292>] ? bad_area_nosemaphore+0x13/0x15 > [ 7.775735] [<ffffffff81047bee>] ? __do_page_fault+0x2fe/0x490 > [ 7.775735] [<ffffffff81056d03>] ? perf_event_task_sched_out+0x33/0x70 > [ 7.775735] [<ffffffff810522cf>] ? __dequeue_entity+0x2f/0x50 > [ 7.775735] [<ffffffff810097ef>] ? __switch_to+0x1df/0x2f0 > [ 7.775735] [<ffffffff8155e3cb>] ? do_page_fault+0x3b/0xa0 > [ 7.775735] [<ffffffff8155b7e5>] ? page_fault+0x25/0x30 > [ 7.775735] [<ffffffff811c9f3d>] ? do_add_mount_unlocked+0x5d/0xe0 > [ 7.775735] [<ffffffff811c9f0f>] ? do_add_mount_unlocked+0x2f/0xe0 > [ 7.775735] [<ffffffff811cb95b>] ? do_mount+0x41b/0xb00 > [ 7.775735] [<ffffffff811564eb>] ? strndup_user+0x4b/0xb0 > [ 7.775735] [<ffffffff81156501>] ? strndup_user+0x61/0xb0 > [ 7.775735] [<ffffffff811cc0ce>] ? sys_mount+0x8e/0xe0 > [ 7.775735] [<ffffffff8100b182>] ? system_call_fastpath+0x16/0x1b > [ 7.775735] Rebooting in 1 seconds..libguestfs: child_cleanup: 0x246f780: child process died Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 100 libraries supported. http://fedoraproject.org/wiki/MinGW