Hi,
I've upgraded my system to Fedora 27 and now I see many btrfs
warnings, although the system seems to be working fine. Is this
something I should worry about?
I have a scrub running with no errors so far:
# btrfs scrub status /mnt/btrfs
scrub status for 038b2b48-fd2d-4565-b2b1-d07847ecca8c
scrub started at Thu Oct 12 19:35:55 2017, running for 03:28:41
total bytes scrubbed: 3.35TiB with 0 errors
# uname -a
Linux xenon 4.13.5-300.fc27.x86_64 #1 SMP Thu Oct 5 16:57:11 UTC 2017
x86_64 x86_64 x86_64 GNU/Linux
# btrfs --version
btrfs-progs v4.13.2
# btrfs fi show
Label: 'btrfs_raid1' uuid: 038b2b48-fd2d-4565-b2b1-d07847ecca8c
Total devices 4 FS bytes used 1.81TiB
devid 4 size 1.82TiB used 1.19TiB path /dev/bcache32
devid 5 size 1.82TiB used 1.19TiB path /dev/bcache16
devid 6 size 1.82TiB used 1.19TiB path /dev/bcache0
devid 7 size 1.79TiB used 158.00GiB path /dev/bcache48
# btrfs fi usage /mnt/btrfs
Overall:
Device size: 7.24TiB
Device allocated: 3.72TiB
Device unallocated: 3.53TiB
Device missing: 0.00B
Used: 3.62TiB
Free (estimated): 1.81TiB (min: 1.81TiB)
Data ratio: 2.00
Metadata ratio: 2.00
Global reserve: 512.00MiB (used: 0.00B)
Data,RAID1: Size:1.85TiB, Used:1.80TiB
/dev/bcache0 1.18TiB
/dev/bcache16 1.18TiB
/dev/bcache32 1.18TiB
/dev/bcache48 157.00GiB
Metadata,RAID1: Size:7.00GiB, Used:5.78GiB
/dev/bcache0 5.00GiB
/dev/bcache16 4.00GiB
/dev/bcache32 4.00GiB
/dev/bcache48 1.00GiB
System,RAID1: Size:32.00MiB, Used:320.00KiB
/dev/bcache16 32.00MiB
/dev/bcache32 32.00MiB
Unallocated:
/dev/bcache0 647.02GiB
/dev/bcache16 647.98GiB
/dev/bcache32 645.98GiB
/dev/bcache48 1.63TiB
All my bcache devices are in writethrough mode:
# bcache-status -s
--- bcache ---
UUID d82cf90a-756c-4b8a-b871-72714cdae024
Block Size 4.00 KiB
Bucket Size 2.0 MiB
Congested? False
Read Congestion 2.0ms
Write Congestion 20.0ms
Total Cache Size 95 GiB
Total Cache Used 95 GiB (100%)
Total Cache Unused 0 B (0%)
Evictable Cache 95 GiB (100%)
Replacement Policy [lru] fifo random
Cache Mode [writethrough] writeback writearound none
Total Hits 150430 (62%)
Total Misses 90622
Total Bypass Hits 1036307 (100%)
Total Bypass Misses 0
Total Bypassed 2 GiB
--- Backing Device ---
Device File /dev/sde4 (8:68)
bcache Device File /dev/bcache48 (252:48)
Size 2 TiB
Cache Mode [writethrough] writeback writearound none
Readahead 0.0k
Sequential Cutoff 4.0 MiB
Merge sequential? False
State clean
Writeback? True
Dirty Data 0 B
Total Hits 14066 (57%)
Total Misses 10363
Total Bypass Hits 40454 (100%)
Total Bypass Misses 0
Total Bypassed 134.3 MiB
--- Cache Device ---
Device File /dev/sda4 (8:4)
Size 95 GiB
Block Size 4.00 KiB
Bucket Size 2.0 MiB
Replacement Policy [lru] fifo random
Discard? False
I/O Errors 0
Metadata Written 99.1 MiB
Data Written 6 GiB
Buckets 48432
Cache Used 95 GiB (100%)
Cache Unused 0 B (0%)
--- Backing Device ---
Device File /dev/sdb1 (8:17)
bcache Device File /dev/bcache32 (252:32)
Size 2 TiB
Cache Mode [writethrough] writeback writearound none
Readahead 0.0k
Sequential Cutoff 4.0 MiB
Merge sequential? False
State clean
Writeback? True
Dirty Data 0 B
Total Hits 28167 (40%)
Total Misses 42227
Total Bypass Hits 632707 (100%)
Total Bypass Misses 0
Total Bypassed 2 GiB
--- Backing Device ---
Device File /dev/sdc1 (8:33)
bcache Device File /dev/bcache16 (252:16)
Size 2 TiB
Cache Mode [writethrough] writeback writearound none
Readahead 0.0k
Sequential Cutoff 4.0 MiB
Merge sequential? False
State clean
Writeback? True
Dirty Data 0 B
Total Hits 67948 (74%)
Total Misses 23356
Total Bypass Hits 201077 (100%)
Total Bypass Misses 0
Total Bypassed 576.0 MiB
--- Backing Device ---
Device File /dev/sdd1 (8:49)
bcache Device File /dev/bcache0 (252:0)
Size 2 TiB
Cache Mode [writethrough] writeback writearound none
Readahead 0.0k
Sequential Cutoff 4.0 MiB
Merge sequential? False
State clean
Writeback? True
Dirty Data 0 B
Total Hits 40249 (73%)
Total Misses 14676
Total Bypass Hits 162406 (100%)
Total Bypass Misses 0
Total Bypassed 590.3 MiB
[ 337.813416] ------------[ cut here ]------------
[ 337.813453] WARNING: CPU: 5 PID: 459 at fs/btrfs/ctree.h:1559
btrfs_update_device+0x1be/0x1d0 [btrfs]
[ 337.813454] Modules linked in: rfcomm fuse vhost_net vhost tap
xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun
nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter
ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat
ebtable_broute ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6
nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack
libcrc32c iptable_mangle iptable_raw iptable_security bridge stp llc
ebtable_filter ebtables ip6table_filter ip6_tables cmac bnep vfat fat
intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel
kvm irqbypass snd_hda_codec_realtek snd_hda_codec_generic
snd_usb_audio snd_hda_codec_hdmi snd_hda_intel snd_hda_codec
snd_hda_core snd_usbmidi_lib eeepc_wmi
[ 337.813494] btusb btrtl uvcvideo snd_hwdep crct10dif_pclmul
crc32_pclmul videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_seq
videobuf2_core ghash_clmulni_intel videodev intel_cstate asus_wmi
snd_rawmidi intel_uncore btbcm snd_seq_device btintel bluetooth
intel_rapl_perf sparse_keymap media ecdh_generic joydev wmi_bmof
snd_pcm rfkill i2c_i801 video iTCO_wdt iTCO_vendor_support mei_me mei
snd_timer wmi snd soundcore shpchp lpc_ich nfsd auth_rpcgss nfs_acl
lockd grace sunrpc binfmt_misc btrfs xor raid6_pq amdkfd amd_iommu_v2
radeon bcache i2c_algo_bit drm_kms_helper crc32c_intel ttm r8169
serio_raw drm mii
[ 337.813534] CPU: 5 PID: 459 Comm: btrfs-cleaner Not tainted
4.13.5-300.fc27.x86_64 #1
[ 337.813535] Hardware name: System manufacturer System Product
Name/P8Z68-V LE, BIOS 4102 09/09/2013
[ 337.813537] task: ffff9e98479ecc80 task.stack: ffffb3a4c2290000
[ 337.813561] RIP: 0010:btrfs_update_device+0x1be/0x1d0 [btrfs]
[ 337.813563] RSP: 0018:ffffb3a4c2293d28 EFLAGS: 00010206
[ 337.813565] RAX: 0000000000000fff RBX: ffff9e9844f3ad20 RCX: 000001c97480fe00
[ 337.813566] RDX: 0000000000000004 RSI: 0000000000003e98 RDI: ffff9e9821e5e000
[ 337.813567] RBP: ffffb3a4c2293d70 R08: 0000000000003e9c R09: ffffb3a4c2293ce0
[ 337.813568] R10: 0000000000001000 R11: 0000000000000003 R12: ffff9e9843aed000
[ 337.813569] R13: 0000000000000000 R14: 0000000000003e78 R15: ffff9e9821e5e000
[ 337.813572] FS: 0000000000000000(0000) GS:ffff9e985ed40000(0000)
knlGS:0000000000000000
[ 337.813573] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 337.813574] CR2: 00001f89b1c4d000 CR3: 000000037ce09000 CR4: 00000000000426e0
[ 337.813576] Call Trace:
[ 337.813603] btrfs_remove_chunk+0x365/0x870 [btrfs]
[ 337.813624] btrfs_delete_unused_bgs+0x30d/0x3d0 [btrfs]
[ 337.813644] cleaner_kthread+0x165/0x180 [btrfs]
[ 337.813650] kthread+0x125/0x140
[ 337.813667] ? __btree_submit_bio_start+0x20/0x20 [btrfs]
[ 337.813670] ? kthread_park+0x60/0x60
[ 337.813675] ret_from_fork+0x25/0x30
[ 337.813677] Code: 4c 89 ff 45 31 c0 ba 10 00 00 00 4c 89 f6 e8 fa
20 ff ff 4c 89 ff e8 f2 ee fc ff e9 d3 fe ff ff 41 bd f4 ff ff ff e9
d0 fe ff ff <0f> ff eb b6 e8 29 bd ab ca 66 0f 1f 84 00 00 00 00 00 66
66 66
[ 337.813713] ---[ end trace 3609a7da677d8844 ]---
[ 337.814256] ------------[ cut here ]------------
[ 337.814281] WARNING: CPU: 5 PID: 459 at fs/btrfs/ctree.h:1559
btrfs_update_device+0x1be/0x1d0 [btrfs]
[ 337.814281] Modules linked in: rfcomm fuse vhost_net vhost tap
xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun
nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter
ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat
ebtable_broute ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6
nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack
libcrc32c iptable_mangle iptable_raw iptable_security bridge stp llc
ebtable_filter ebtables ip6table_filter ip6_tables cmac bnep vfat fat
intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel
kvm irqbypass snd_hda_codec_realtek snd_hda_codec_generic
snd_usb_audio snd_hda_codec_hdmi snd_hda_intel snd_hda_codec
snd_hda_core snd_usbmidi_lib eeepc_wmi
[ 337.814316] btusb btrtl uvcvideo snd_hwdep crct10dif_pclmul
crc32_pclmul videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_seq
videobuf2_core ghash_clmulni_intel videodev intel_cstate asus_wmi
snd_rawmidi intel_uncore btbcm snd_seq_device btintel bluetooth
intel_rapl_perf sparse_keymap media ecdh_generic joydev wmi_bmof
snd_pcm rfkill i2c_i801 video iTCO_wdt iTCO_vendor_support mei_me mei
snd_timer wmi snd soundcore shpchp lpc_ich nfsd auth_rpcgss nfs_acl
lockd grace sunrpc binfmt_misc btrfs xor raid6_pq amdkfd amd_iommu_v2
radeon bcache i2c_algo_bit drm_kms_helper crc32c_intel ttm r8169
serio_raw drm mii
[ 337.814352] CPU: 5 PID: 459 Comm: btrfs-cleaner Tainted: G W
4.13.5-300.fc27.x86_64 #1
[ 337.814353] Hardware name: System manufacturer System Product
Name/P8Z68-V LE, BIOS 4102 09/09/2013
[ 337.814354] task: ffff9e98479ecc80 task.stack: ffffb3a4c2290000
[ 337.814375] RIP: 0010:btrfs_update_device+0x1be/0x1d0 [btrfs]
[ 337.814376] RSP: 0018:ffffb3a4c2293d28 EFLAGS: 00010206
[ 337.814378] RAX: 0000000000000fff RBX: ffff9e9844f3ad20 RCX: 000001d1c100fe00
[ 337.814379] RDX: 0000000000000004 RSI: 0000000000003f5c RDI: ffff9e9821e5e000
[ 337.814380] RBP: ffffb3a4c2293d70 R08: 0000000000003f60 R09: ffffb3a4c2293ce0
[ 337.814381] R10: 0000000000001000 R11: 0000000000000003 R12: ffff9e9844995800
[ 337.814382] R13: 0000000000000000 R14: 0000000000003f3c R15: ffff9e9821e5e000
[ 337.814384] FS: 0000000000000000(0000) GS:ffff9e985ed40000(0000)
knlGS:0000000000000000
[ 337.814385] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 337.814387] CR2: 00001f89b1c4d000 CR3: 000000037ce09000 CR4: 00000000000426e0
[ 337.814388] Call Trace:
[ 337.814410] btrfs_remove_chunk+0x365/0x870 [btrfs]
[ 337.814443] btrfs_delete_unused_bgs+0x30d/0x3d0 [btrfs]
[ 337.814462] cleaner_kthread+0x165/0x180 [btrfs]
[ 337.814466] kthread+0x125/0x140
[ 337.814483] ? __btree_submit_bio_start+0x20/0x20 [btrfs]
[ 337.814485] ? kthread_park+0x60/0x60
[ 337.814488] ret_from_fork+0x25/0x30
[ 337.814490] Code: 4c 89 ff 45 31 c0 ba 10 00 00 00 4c 89 f6 e8 fa
20 ff ff 4c 89 ff e8 f2 ee fc ff e9 d3 fe ff ff 41 bd f4 ff ff ff e9
d0 fe ff ff <0f> ff eb b6 e8 29 bd ab ca 66 0f 1f 84 00 00 00 00 00 66
66 66
[ 337.814529] ---[ end trace 3609a7da677d8845 ]---
[ 337.822161] ------------[ cut here ]------------
[ 337.822185] WARNING: CPU: 5 PID: 459 at fs/btrfs/ctree.h:1559
btrfs_update_device+0x1be/0x1d0 [btrfs]
[ 337.822185] Modules linked in: rfcomm fuse vhost_net vhost tap
xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun
nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter
ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat
ebtable_broute ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6
nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack
libcrc32c iptable_mangle iptable_raw iptable_security bridge stp llc
ebtable_filter ebtables ip6table_filter ip6_tables cmac bnep vfat fat
intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel
kvm irqbypass snd_hda_codec_realtek snd_hda_codec_generic
snd_usb_audio snd_hda_codec_hdmi snd_hda_intel snd_hda_codec
snd_hda_core snd_usbmidi_lib eeepc_wmi
[ 337.822221] btusb btrtl uvcvideo snd_hwdep crct10dif_pclmul
crc32_pclmul videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_seq
videobuf2_core ghash_clmulni_intel videodev intel_cstate asus_wmi
snd_rawmidi intel_uncore btbcm snd_seq_device btintel bluetooth
intel_rapl_perf sparse_keymap media ecdh_generic joydev wmi_bmof
snd_pcm rfkill i2c_i801 video iTCO_wdt iTCO_vendor_support mei_me mei
snd_timer wmi snd soundcore shpchp lpc_ich nfsd auth_rpcgss nfs_acl
lockd grace sunrpc binfmt_misc btrfs xor raid6_pq amdkfd amd_iommu_v2
radeon bcache i2c_algo_bit drm_kms_helper crc32c_intel ttm r8169
serio_raw drm mii
[ 337.822256] CPU: 5 PID: 459 Comm: btrfs-cleaner Tainted: G W
4.13.5-300.fc27.x86_64 #1
[ 337.822257] Hardware name: System manufacturer System Product
Name/P8Z68-V LE, BIOS 4102 09/09/2013
[ 337.822258] task: ffff9e98479ecc80 task.stack: ffffb3a4c2290000
[ 337.822278] RIP: 0010:btrfs_update_device+0x1be/0x1d0 [btrfs]
[ 337.822279] RSP: 0018:ffffb3a4c2293d28 EFLAGS: 00010206
[ 337.822281] RAX: 0000000000000fff RBX: ffff9e9844f3ad20 RCX: 000001c97480fe00
[ 337.822282] RDX: 0000000000000004 RSI: 0000000000003e98 RDI: ffff9e9821e5e000
[ 337.822283] RBP: ffffb3a4c2293d70 R08: 0000000000003e9c R09: ffffb3a4c2293ce0
[ 337.822284] R10: 0000000000001000 R11: 0000000000000003 R12: ffff9e9843aed000
[ 337.822285] R13: 0000000000000000 R14: 0000000000003e78 R15: ffff9e9821e5e000
[ 337.822287] FS: 0000000000000000(0000) GS:ffff9e985ed40000(0000)
knlGS:0000000000000000
[ 337.822288] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 337.822289] CR2: 00001f89b1c4d000 CR3: 000000037ce09000 CR4: 00000000000426e0
[ 337.822290] Call Trace:
[ 337.822328] btrfs_remove_chunk+0x365/0x870 [btrfs]
[ 337.822347] btrfs_delete_unused_bgs+0x30d/0x3d0 [btrfs]
[ 337.822373] cleaner_kthread+0x165/0x180 [btrfs]
[ 337.822376] kthread+0x125/0x140
[ 337.822392] ? __btree_submit_bio_start+0x20/0x20 [btrfs]
[ 337.822394] ? kthread_park+0x60/0x60
[ 337.822409] ret_from_fork+0x25/0x30
[ 337.822410] Code: 4c 89 ff 45 31 c0 ba 10 00 00 00 4c 89 f6 e8 fa
20 ff ff 4c 89 ff e8 f2 ee fc ff e9 d3 fe ff ff 41 bd f4 ff ff ff e9
d0 fe ff ff <0f> ff eb b6 e8 29 bd ab ca 66 0f 1f 84 00 00 00 00 00 66
66 66
[ 337.822446] ---[ end trace 3609a7da677d8846 ]---
[ 337.822868] ------------[ cut here ]------------
[ 337.822890] WARNING: CPU: 5 PID: 459 at fs/btrfs/ctree.h:1559
btrfs_update_device+0x1be/0x1d0 [btrfs]
[ 337.822891] Modules linked in: rfcomm fuse vhost_net vhost tap
xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun
nf_conntrack_netbios_ns nf_conntrack_broadcast xt_CT ip6t_rpfilter
ip6t_REJECT nf_reject_ipv6 xt_conntrack ip_set nfnetlink ebtable_nat
ebtable_broute ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6
nf_nat_ipv6 ip6table_mangle ip6table_raw ip6table_security iptable_nat
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack
libcrc32c iptable_mangle iptable_raw iptable_security bridge stp llc
ebtable_filter ebtables ip6table_filter ip6_tables cmac bnep vfat fat
intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel
kvm irqbypass snd_hda_codec_realtek snd_hda_codec_generic
snd_usb_audio snd_hda_codec_hdmi snd_hda_intel snd_hda_codec
snd_hda_core snd_usbmidi_lib eeepc_wmi
[ 337.822928] btusb btrtl uvcvideo snd_hwdep crct10dif_pclmul
crc32_pclmul videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_seq
videobuf2_core ghash_clmulni_intel videodev intel_cstate asus_wmi
snd_rawmidi intel_uncore btbcm snd_seq_device btintel bluetooth
intel_rapl_perf sparse_keymap media ecdh_generic joydev wmi_bmof
snd_pcm rfkill i2c_i801 video iTCO_wdt iTCO_vendor_support mei_me mei
snd_timer wmi snd soundcore shpchp lpc_ich nfsd auth_rpcgss nfs_acl
lockd grace sunrpc binfmt_misc btrfs xor raid6_pq amdkfd amd_iommu_v2
radeon bcache i2c_algo_bit drm_kms_helper crc32c_intel ttm r8169
serio_raw drm mii
[ 337.822963] CPU: 5 PID: 459 Comm: btrfs-cleaner Tainted: G W
4.13.5-300.fc27.x86_64 #1
[ 337.822964] Hardware name: System manufacturer System Product
Name/P8Z68-V LE, BIOS 4102 09/09/2013
[ 337.822965] task: ffff9e98479ecc80 task.stack: ffffb3a4c2290000
[ 337.822983] RIP: 0010:btrfs_update_device+0x1be/0x1d0 [btrfs]
[ 337.822984] RSP: 0018:ffffb3a4c2293d28 EFLAGS: 00010206
[ 337.822986] RAX: 0000000000000fff RBX: ffff9e9844f3ad20 RCX: 000001d1c100fe00
[ 337.822987] RDX: 0000000000000004 RSI: 0000000000003efa RDI: ffff9e9821e5e000
[ 337.822988] RBP: ffffb3a4c2293d70 R08: 0000000000003efe R09: ffffb3a4c2293ce0
[ 337.822989] R10: 0000000000001000 R11: 0000000000000003 R12: ffff9e9844999c00
[ 337.822990] R13: 0000000000000000 R14: 0000000000003eda R15: ffff9e9821e5e000
[ 337.822994] FS: 0000000000000000(0000) GS:ffff9e985ed40000(0000)
knlGS:0000000000000000
[ 337.822995] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 337.822996] CR2: 00001f89b1c4d000 CR3: 000000037ce09000 CR4: 00000000000426e0
[ 337.822997] Call Trace:
[ 337.823017] btrfs_remove_chunk+0x365/0x870 [btrfs]
[ 337.823036] btrfs_delete_unused_bgs+0x30d/0x3d0 [btrfs]
[ 337.823054] cleaner_kthread+0x165/0x180 [btrfs]
[ 337.823057] kthread+0x125/0x140
[ 337.823074] ? __btree_submit_bio_start+0x20/0x20 [btrfs]
[ 337.823078] ? kthread_park+0x60/0x60
[ 337.823081] ret_from_fork+0x25/0x30
[ 337.823083] Code: 4c 89 ff 45 31 c0 ba 10 00 00 00 4c 89 f6 e8 fa
20 ff ff 4c 89 ff e8 f2 ee fc ff e9 d3 fe ff ff 41 bd f4 ff ff ff e9
d0 fe ff ff <0f> ff eb b6 e8 29 bd ab ca 66 0f 1f 84 00 00 00 00 00 66
66 66
[ 337.823118] ---[ end trace 3609a7da677d8847 ]---
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