First, the required information
~ $ uname -a
Linux auswscs9903 3.10.0-693.21.1.el7.x86_64 #1 SMP Wed Mar 7 19:03:37 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux
~ $ btrfs --version
btrfs-progs v4.9.1
~ $ sudo btrfs fi show
Label: none uuid: 77afc2bb-f7a8-4ce9-9047-c031f7571150
Total devices 34 FS bytes used 89.06TiB
devid 1 size 5.46TiB used 4.72TiB path /dev/sdb
devid 2 size 5.46TiB used 4.72TiB path /dev/sda
devid 3 size 5.46TiB used 4.72TiB path /dev/sdx
devid 4 size 5.46TiB used 4.72TiB path /dev/sdt
devid 5 size 5.46TiB used 4.72TiB path /dev/sdz
devid 6 size 5.46TiB used 4.72TiB path /dev/sdv
devid 7 size 5.46TiB used 4.72TiB path /dev/sdab
devid 8 size 5.46TiB used 4.72TiB path /dev/sdw
devid 9 size 5.46TiB used 4.72TiB path /dev/sdad
devid 10 size 5.46TiB used 4.72TiB path /dev/sdaa
devid 11 size 5.46TiB used 4.72TiB path /dev/sdr
devid 12 size 5.46TiB used 4.72TiB path /dev/sdy
devid 13 size 5.46TiB used 4.72TiB path /dev/sdj
devid 14 size 5.46TiB used 4.72TiB path /dev/sdaf
devid 15 size 5.46TiB used 4.72TiB path /dev/sdag
devid 16 size 5.46TiB used 4.72TiB path /dev/sdh
devid 17 size 5.46TiB used 4.72TiB path /dev/sdu
devid 18 size 5.46TiB used 4.72TiB path /dev/sdac
devid 19 size 5.46TiB used 4.72TiB path /dev/sdk
devid 20 size 5.46TiB used 4.72TiB path /dev/sdah
devid 21 size 5.46TiB used 4.72TiB path /dev/sdp
devid 22 size 5.46TiB used 4.72TiB path /dev/sdae
devid 23 size 5.46TiB used 4.72TiB path /dev/sdc
devid 24 size 5.46TiB used 4.72TiB path /dev/sdl
devid 25 size 5.46TiB used 4.72TiB path /dev/sdo
devid 26 size 5.46TiB used 4.72TiB path /dev/sdd
devid 27 size 5.46TiB used 4.72TiB path /dev/sdi
devid 28 size 5.46TiB used 4.72TiB path /dev/sdn
devid 29 size 5.46TiB used 4.72TiB path /dev/sds
devid 30 size 5.46TiB used 4.72TiB path /dev/sdm
devid 31 size 5.46TiB used 4.72TiB path /dev/sdf
devid 32 size 5.46TiB used 4.72TiB path /dev/sdq
devid 33 size 5.46TiB used 4.72TiB path /dev/sdg
devid 34 size 5.46TiB used 4.72TiB path /dev/sde
~ $ sudo btrfs fi df /gpfs_backups
Data, RAID6: total=150.82TiB, used=88.88TiB
System, RAID6: total=512.00MiB, used=19.08MiB
Metadata, RAID6: total=191.00GiB, used=187.38GiB
GlobalReserve, single: total=512.00MiB, used=0.00B
I was running a btrfs balance, which crashed. Since then, I cannot do anything
on the filesystems that does any real i/o, or it quickly goes read only.
Running btrfs scrub results in this crash:
Mar 15 11:10:43 auswscs9903 kernel: WARNING: CPU: 1 PID: 4588 at
fs/btrfs/extent-tree.c:10367 btrfs_create_pending_block_groups+0x23e/0x240
[btrfs]
Mar 15 11:10:43 auswscs9903 kernel: Modules linked in: nfsv3 nfs fscache
mpt3sas mpt2sas raid_class mptctl mptbase binfmt_misc ipt_REJECT nf_reject_ipv4
nf_conntrack_ipv4 nf_defrag_ipv4 xt_comment xt_multiport xt_conntrack
nf_conntrack libcrc32c iptable_filter dm_mirror dm_region_hash dm_log dm_mod
iTCO_wdt iTCO_vendor_support btrfs sb_edac edac_core intel_powerclamp coretemp
intel_rapl iosf_mbi kvm_intel kvm irqbypass crc32_pclmul ghash_clmulni_intel
aesni_intel lrw gf128mul glue_helper ablk_helper cryptd raid6_pq xor pcspkr
joydev ses enclosure scsi_transport_sas sg mei_me i2c_i801 mei lpc_ich ioatdma
shpchp wmi ipmi_si ipmi_devintf ipmi_msghandler acpi_power_meter acpi_pad nfsd
nfs_acl lockd auth_rpcgss grace sunrpc ip_tables ext4 mbcache jbd2 sd_mod
crc_t10dif crct10dif_generic ast drm_kms_helper syscopyarea sysfillrect
Mar 15 11:10:43 auswscs9903 kernel: sysimgblt fb_sys_fops ttm drm ahci igb
libahci libata crct10dif_pclmul crct10dif_common crc32c_intel megaraid_sas ptp
pps_core i2c_algo_bit myri10ge i2c_core dca
Mar 15 11:10:43 auswscs9903 kernel: CPU: 1 PID: 4588 Comm: btrfs Tainted: G
W ------------ 3.10.0-693.21.1.el7.x86_64 #1
Mar 15 11:10:43 auswscs9903 kernel: Hardware name: Supermicro Super
Server/X10DRL-i, BIOS 1.1b 09/11/2015
Mar 15 11:10:43 auswscs9903 kernel: Call Trace:
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffff816ae7c8>] dump_stack+0x19/0x1b
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffff8108ae58>] __warn+0xd8/0x100
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffff8108aedf>]
warn_slowpath_fmt+0x5f/0x80
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffffc0ac2fd2>] ?
btrfs_finish_chunk_alloc+0x222/0x5e0 [btrfs]
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffffc0a7cb7e>]
btrfs_create_pending_block_groups+0x23e/0x240 [btrfs]
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffffc0a7d215>]
do_chunk_alloc+0x2f5/0x330 [btrfs]
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffffc0a816ee>]
btrfs_inc_block_group_ro+0x18e/0x1b0 [btrfs]
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffffc0afad47>]
scrub_enumerate_chunks+0x207/0x6a0 [btrfs]
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffff810c79ec>] ?
try_to_wake_up+0x18c/0x350
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffff816b2c00>] ?
__ww_mutex_lock+0x40/0xa0
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffffc0afc5f3>]
btrfs_scrub_dev+0x233/0x5a0 [btrfs]
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffffc0ad2a00>] ?
btrfs_ioctl+0xdc0/0x2d30 [btrfs]
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffffc0ad2a59>]
btrfs_ioctl+0xe19/0x2d30 [btrfs]
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffffc026b1f1>] ?
ext4_filemap_fault+0x41/0x50 [ext4]
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffff81186deb>] ? unlock_page+0x2b/0x30
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffff811b1f16>] ?
do_read_fault.isra.44+0xe6/0x130
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffff811e4629>] ?
kmem_cache_alloc_node+0x109/0x200
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffff811b6781>] ?
handle_mm_fault+0x691/0xfa0
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffff81121930>] ?
audit_filter_rules.isra.8+0x280/0xf90
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffff81219e90>]
do_vfs_ioctl+0x350/0x560
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffff8121a141>] SyS_ioctl+0xa1/0xc0
Mar 15 11:10:43 auswscs9903 kernel: [<ffffffff816c0715>]
system_call_fastpath+0x1c/0x21
As far as I can tell the hardware seem fine. I've updated from CentOS 7.2 to
the most current version, but the problem persists. How best to address this
problem?
Freundliche Grüße / Best regards,
Mike Stevens
Senior Systems Administrator - SC3
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