openSUSE 13.1 i686 8 device raid 10 when replacing a failed disk (new device is added) ~ # uname -r 3.11.6-4-pae ~ # btrfs --version Btrfs v3.12+20131125 ~ # mount -o degraded /pool ~ # journalctl | tail Feb 06 12:22:51 store03 kernel: device label pool devid 4 transid 55050 /dev/sde Feb 06 12:22:53 store03 kernel: btrfs: allowing degraded mounts Feb 06 12:22:53 store03 kernel: btrfs: disk space caching is enabled Feb 06 12:22:53 store03 kernel: btrfs: bdev (null) errs: wr 353, rd 1, flush 17, corrupt 0, gen 0 Feb 06 12:23:16 store03 kernel: BTRFS debug (device sde): unlinked 1 orphans ~ # btrfs filesystem show /dev/disk/by-label/pool Label: pool uuid: 3e6ba20f-a4d0-40e4-88e7-a31c4930bcfe Total devices 9 FS bytes used 5.19TiB devid 1 size 1.36TiB used 169.50GiB path devid 2 size 1.82TiB used 1.62TiB path /dev/sdc devid 3 size 931.51GiB used 931.51GiB path /dev/sdd devid 4 size 931.51GiB used 931.51GiB path /dev/sde devid 6 size 1.82TiB used 1.62TiB path /dev/sdg devid 7 size 1.82TiB used 1.62TiB path /dev/sdh devid 8 size 931.51GiB used 931.51GiB path /dev/sdi devid 9 size 1.82TiB used 1.62TiB path /dev/sdf devid 10 size 1.82TiB used 1.01TiB path /dev/sdb ~ # btrfs device delete missing /pool ~ # journalctl -l | tail Feb 06 12:25:43 store03 kernel: btrfs: relocating block group 10590585618432 flags 68 ... Feb 06 12:47:23 store03 kernel: [<c025ebd2>] kthread+0x92/0xa0 Feb 06 12:47:23 store03 kernel: [<c06ece67>] ret_from_kernel_thread+0x1b/0x28 Feb 06 12:47:23 store03 kernel: [<c025eb40>] kthread_create_on_node+0xd0/0xd0 Feb 06 12:47:23 store03 kernel: DWARF2 unwinder stuck at kthread+0x0/0xa0 Feb 06 12:47:23 store03 kernel: Feb 06 12:47:23 store03 kernel: Leftover inexact backtrace: Feb 06 12:47:23 store03 kernel: ---[ end trace c47f82d03f79250d ]--- Feb 06 12:47:23 store03 kernel: ------------[ cut here ]------------ Feb 06 12:47:23 store03 kernel: WARNING: CPU: 0 PID: 3028 at /home/abuild/rpmbuild/BUILD/kernel-pae-3.11.6/linux-3.11/fs/btrfs/disk-io.c:482 btree_csum_one_bio.isra.48+0x93/0x110 [btrfs]() Feb 06 12:47:23 store03 kernel: Modules linked in: bonding hwmon_vid btrfs raid6_pq zlib_deflate xor libcrc32c joydev hid_generic iTCO_wdt iTCO_vendor_support coretemp pcspkr serio_raw i2c_i801 ata_generic lpc_ich mfd_core usbhid mvsas libsas scsi_transport_sas e1000e ptp pps_core shpchp mperf sg dm_mod autofs4 ata_piix uhci_hcd ehci_pci ehci_hcd usbcore usb_common i915 fan thermal processor drm_kms_helper drm i2c_algo_bit button video thermal_sys scsi_dh_hp_sw scsi_dh_emc scsi_dh_rdac scsi_dh_alua scsi_dh Feb 06 12:47:23 store03 kernel: CPU: 0 PID: 3028 Comm: btrfs-worker-2 Tainted: G W 3.11.6-4-pae #1 Feb 06 12:47:23 store03 kernel: Hardware name: PhoenixAward 945GM/945GM, BIOS 6.00 PG 08/13/2008 Feb 06 12:47:23 store03 kernel: 00000009 c06e075a 00000000 c0242c5e c085dbc8 00000000 00000bd4 f8a06e34 Feb 06 12:47:23 store03 kernel: 000001e2 f8985503 f8985503 00000002 f5c60304 f2e606d8 c14ca4f0 c0242d1b Feb 06 12:47:23 store03 kernel: 00000009 00000000 f8985503 ef93d4a0 f5c60304 e62a6c00 16c1f682 f46fe86c Feb 06 12:47:23 store03 kernel: Call Trace: Feb 06 12:47:23 store03 kernel: [<c0204ef9>] try_stack_unwind+0x179/0x190 Feb 06 12:47:23 store03 kernel: [<c0203e17>] dump_trace+0x47/0xf0 Feb 06 12:47:23 store03 kernel: [<c0204f4f>] show_trace_log_lvl+0x3f/0x50 Feb 06 12:47:23 store03 kernel: [<c0203f10>] show_stack_log_lvl+0x50/0xd0 Feb 06 12:47:23 store03 kernel: [<c0204f9f>] show_stack+0x1f/0x40 Feb 06 12:47:23 store03 kernel: [<c06e075a>] dump_stack+0x3e/0x4e Feb 06 12:47:23 store03 kernel: [<c0242c5e>] warn_slowpath_common+0x7e/0xa0 Feb 06 12:47:23 store03 kernel: [<c0242d1b>] warn_slowpath_null+0x1b/0x20 Feb 06 12:47:23 store03 kernel: [<f8985503>] btree_csum_one_bio.isra.48+0x93/0x110 [btrfs] Feb 06 12:47:23 store03 kernel: [<f898261f>] run_one_async_start+0x2f/0x40 [btrfs] Feb 06 12:47:23 store03 kernel: [<f89bdcb7>] worker_loop+0x107/0x470 [btrfs] Feb 06 12:47:23 store03 kernel: [<c025ebd2>] kthread+0x92/0xa0 Feb 06 12:47:23 store03 kernel: [<c06ece67>] ret_from_kernel_thread+0x1b/0x28 Feb 06 12:47:23 store03 kernel: [<c025eb40>] kthread_create_on_node+0xd0/0xd0 Feb 06 12:47:23 store03 kernel: DWARF2 unwinder stuck at kthread+0x0/0xa0 Feb 06 12:47:23 store03 kernel: Feb 06 12:47:23 store03 kernel: Leftover inexact backtrace: Feb 06 12:47:23 store03 kernel: ---[ end trace c47f82d03f79250e ]--- Feb 06 12:47:23 store03 kernel: ------------[ cut here ]------------ ... kernel soon locks up, any advice on how to proceed? any other info needed? -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html