Hello,
I'm running Linux 4.3 and also btrfs-progs-v4.3
I'm replacing one drive with another in my system. Both drives are
healthy as far as I know.
I can start btrfs dev del and it will run for a while and then I get a
cpu soft lockup.
I've restarted the process a few times and each time it runs a while,
getting a bit further and then I get the cpu soft lockup again. (at
which point the I/O has stopped and I typically have to hard power the
system)
I do this to monitor the progress.
root@x1:~# while sleep 60; do /apps/src/btrfs-progs-v4.3/btrfs fi show
/mnt/btrfs-seagate2tbp3-root; done
Label: none uuid: eebd1291-7ccd-49da-b3c3-93942527ead4
Total devices 2 FS bytes used 1.48TiB
devid 1 size 0.00B used 420.04GiB path
/dev/mapper/seagate2tbp3_crypt
devid 2 size 1.82TiB used 1.08TiB path /dev/mapper/sde1_crypt
btrfs-progs v4.3
Label: none uuid: eebd1291-7ccd-49da-b3c3-93942527ead4
Total devices 2 FS bytes used 1.48TiB
devid 1 size 0.00B used 418.04GiB path
/dev/mapper/seagate2tbp3_crypt
devid 2 size 1.82TiB used 1.08TiB path /dev/mapper/sde1_crypt
Any suggestions on how to prevent this from happening?
Thanks.
Nov 8 01:02:30 x1 kernel: [22954.038620] NMI watchdog: BUG: soft lockup
- CPU#1 stuck for 22s! [btrfs:3086]
Nov 8 01:02:30 x1 kernel: [22954.038621] Modules linked in: pci_stub
vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) ipt_REJECT
nf_reject_ipv4 nf_log_ipv4 nf_log_common xt_LOG xt_limit xt_tcpudp
nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack
iptable_filter ip_tables x_tables usblp snd_hda_codec_hdmi
snd_hda_codec_realtek snd_hda_codec_generic nls_utf8 nls_cp437 vfat
intel_rapl fat iosf_mbi x86_pkg_temp_thermal intel_powerclamp coretemp
kvm_intel kvm snd_hda_intel snd_hda_codec snd_hda_core snd_pcsp
snd_hwdep serio_raw snd_pcm snd_timer snd soundcore i2c_i801 efivars
i915 evdev i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt
fb_sys_fops drm mei_me shpchp mei battery wmi video button acpi_pad
processor fuse efivarfs autofs4 algif_skcipher af_alg hid_generic usbhid
dm_crypt dm_mod sg sr_mod cdrom sd_mod crct10dif_pclmul crc32_pclmul
crc32c_intel jitterentropy_rng sha256_ssse3 sha256_generic hmac drbg
ansi_cprng aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper
cryptd ahci libahci xhci_pci libata xhci_hcd scsi_mod usbcore usb_common
fan thermal i2c_hid i2c_core hid
Nov 8 01:02:30 x1 kernel: [22954.038684] CPU: 1 PID: 3086 Comm: btrfs
Tainted: G W O 4.3.0 #1
Nov 8 01:02:30 x1 kernel: [22954.038685] Hardware name: Gigabyte
Technology Co., Ltd. To be filled by O.E.M./H170M-DS3H-CF, BIOS F2
10/14/2015
Nov 8 01:02:30 x1 kernel: [22954.038686] task: ffff8803f30e91c0 ti:
ffff8803f2e28000 task.ti: ffff8803f2e28000
Nov 8 01:02:30 x1 kernel: [22954.038687] RIP:
0010:[<ffffffff815e5060>] [<ffffffff815e5060>] _raw_spin_lock+0x10/0x20
Nov 8 01:02:30 x1 kernel: [22954.038702] RSP: 0018:ffff8803f2e2baf8
EFLAGS: 00000246
Nov 8 01:02:30 x1 kernel: [22954.038703] RAX: 0000000000000000 RBX:
ffff8803f2e2bb38 RCX: 0000000000000000
Nov 8 01:02:30 x1 kernel: [22954.038704] RDX: 0000000000000001 RSI:
ffff880471c9cf00 RDI: ffff88028d94dd70
Nov 8 01:02:30 x1 kernel: [22954.038704] RBP: ffff880131e94800 R08:
ffff88046108a000 R09: 00000000ffffffe2
Nov 8 01:02:30 x1 kernel: [22954.038705] R10: 000000000000002a R11:
000000000000000b R12: ffff88028d94d800
Nov 8 01:02:30 x1 kernel: [22954.038706] R13: ffff8803f2e2bb38 R14:
ffff8801e6a48800 R15: ffff88028d94dd78
Nov 8 01:02:30 x1 kernel: [22954.038706] FS: 00007f9ad24948c0(0000)
GS:ffff880471c80000(0000) knlGS:0000000000000000
Nov 8 01:02:30 x1 kernel: [22954.038707] CS: 0010 DS: 0000 ES: 0000
CR0: 0000000080050033
Nov 8 01:02:30 x1 kernel: [22954.038708] CR2: 00000000014e2d38 CR3:
00000003d8989000 CR4: 00000000003406e0
Nov 8 01:02:30 x1 kernel: [22954.038709] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Nov 8 01:02:30 x1 kernel: [22954.038709] DR3: 0000000000000000 DR6:
00000000fffe0ff0 DR7: 0000000000000400
Nov 8 01:02:30 x1 kernel: [22954.038710] Stack:
Nov 8 01:02:30 x1 kernel: [22954.038710] ffffffff812f41e7
ffff8803f2e2bb38 ffff880131e94800 ffff88028d94d800
Nov 8 01:02:30 x1 kernel: [22954.038711] ffffffff812f42dd
ffff880131e94bc0 ffffffff812f8b00 000000005698f3c0
Nov 8 01:02:30 x1 kernel: [22954.038713] ffff880131e94bc0
ffff880131e94bc0 ffff88028d94d8e8 ffff8802a77e6f50
Nov 8 01:02:30 x1 kernel: [22954.038714] Call Trace:
Nov 8 01:02:30 x1 kernel: [22954.038716] [<ffffffff812f41e7>] ?
__del_reloc_root+0x27/0x100
Nov 8 01:02:30 x1 kernel: [22954.038718] [<ffffffff812f42dd>] ?
free_reloc_roots+0x1d/0x30
Nov 8 01:02:30 x1 kernel: [22954.038719] [<ffffffff812f8b00>] ?
merge_reloc_roots+0x170/0x230
Nov 8 01:02:30 x1 kernel: [22954.038720] [<ffffffff812f8ffc>] ?
relocate_block_group+0x43c/0x670
Nov 8 01:02:30 x1 kernel: [22954.038721] [<ffffffff812f93d0>] ?
btrfs_relocate_block_group+0x1a0/0x280
Nov 8 01:02:30 x1 kernel: [22954.038723] [<ffffffff812d1691>] ?
btrfs_relocate_chunk.isra.36+0x41/0xc0
Nov 8 01:02:30 x1 kernel: [22954.038724] [<ffffffff812d203b>] ?
btrfs_shrink_device+0x19b/0x520
Nov 8 01:02:30 x1 kernel: [22954.038725] [<ffffffff812d6058>] ?
btrfs_rm_device+0x2a8/0x820
Nov 8 01:02:30 x1 kernel: [22954.038727] [<ffffffff812e1869>] ?
btrfs_ioctl+0x19d9/0x27b0
Nov 8 01:02:30 x1 kernel: [22954.038729] [<ffffffff811b605a>] ?
filename_lookup+0xda/0x150
Nov 8 01:02:30 x1 kernel: [22954.038731] [<ffffffff810ee1ae>] ?
from_kgid_munged+0xe/0x20
Nov 8 01:02:30 x1 kernel: [22954.038733] [<ffffffff811ac053>] ?
cp_new_stat+0x143/0x160
Nov 8 01:02:30 x1 kernel: [22954.038734] [<ffffffff811b9943>] ?
do_vfs_ioctl+0x2c3/0x490
Nov 8 01:02:30 x1 kernel: [22954.038735] [<ffffffff811ac099>] ?
SYSC_newstat+0x29/0x40
Nov 8 01:02:30 x1 kernel: [22954.038737] [<ffffffff811b9b4b>] ?
SyS_ioctl+0x3b/0x70
Nov 8 01:02:30 x1 kernel: [22954.038738] [<ffffffff815e53b6>] ?
entry_SYSCALL_64_fastpath+0x16/0x75
Nov 8 01:02:30 x1 kernel: [22954.038739] Code: 8b 07 85 c0 74 03 31 c0
c3 ba 01 00 00 00 f0 0f b1 17 85 c0 75 f0 b0 01 c3 66 90 0f 1f 44 00 00
31 c0 ba 01 00 00 00 f0 0f b1 17 <85> c0 75 01 c3 89 c6 e9 a4 34 ac ff
0f 1f 40 00 0f 1f 44 00 00
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