UBI/UBIFS corruptions during random power-cuts
Bhuvanchandra DV
bhuvanchandra.dv at toradex.com
Thu Jan 12 05:31:20 PST 2017
Hello!,
During random power-cuts we observe consistent UBI/UBIFS issues. After multiple
random power-cuts UBIFS is getting corrupted and unable to recover from that.
NAND flash driver(vf610_nfc) passed all mtd-tests and ubi-tests. Not sure how to
trace the reason for the ubifs corruption, can any one point me to right direction
to figure out the reason for the UBIFS corruptions. We also tried disabling fastmap
(just to check) on both kernel and U-Boot but still observed the corruptions at
random power-cuts.
Hardware: Toradex Colibri VF50[0]
Kernel Version: 4.4.21-v2.6.1b1+g7ecc29c[1]
U-Boot Version: U-Boot 2016.11+fslc+g1a0e06a[2]
Log:
[ 2.442196] ubi0: default fastmap pool size: 50
[ 2.456898] ubi0: default fastmap WL pool size: 25
[ 2.471518] ubi0: attaching mtd3
[ 2.906123] ubi0: scanning is finished
[ 2.932290] ubi0: attached mtd3 (name "ubi", size 126 MiB)
[ 2.947186] ubi0: PEB size: 131072 bytes (128 KiB), LEB size: 126976 bytes
[ 2.963482] ubi0: min./max. I/O unit sizes: 2048/2048, sub-page size 2048
[ 2.979836] ubi0: VID header offset: 2048 (aligned 2048), data offset: 4096
[ 2.996544] ubi0: good PEBs: 1002, bad PEBs: 6, corrupted PEBs: 0
[ 3.012452] ubi0: user volume: 3, internal volumes: 1, max. volumes count: 128
[ 3.039141] ubi0: max/mean erase counter: 155/25, WL threshold: 4096, image sequence number: 543125357
[ 3.068568] ubi0: available PEBs: 12, total reserved PEBs: 990, PEBs reserved for bad PEB handling: 14
[ 3.098879] ubi0: background thread "ubi_bgt0d" started, PID 57
[ 3.117852] input: gpio-keys as /devices/platform/gpio-keys/input/input1
[ 3.138290] rtc-ds1307 0-0068: hctosys: unable to read the hardware clock
[ 3.174546] ALSA device list:
[ 3.189044] No soundcards f
ound.
[ 3.237056] UBIFS (ubi0:2): recovery needed
[ 3.427633] UBIFS error (ubi0:2 pid 1): ubifs_read_node: bad node type (255 but expected 3)
[ 3.459103] UBIFS error (ubi0:2 pid 1): ubifs_read_node: bad node at LEB 766:122880, LEB mapping status 1
[ 3.491918] Not a node, first 24 bytes:
[ 3.496028] 00000000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ........................
[ 3.545462] CPU: 0 PID: 1 Comm: swapper Not tainted 4.4.21-v2.6.1b1+g7ecc29c #1
[ 3.577996] Hardware name: Freescale Vybrid VF5xx/VF6xx (Device Tree)
[ 3.597521] Backtrace:
[ 3.612914] [<80013474>] (dump_backtrace) from [<8001366c>] (show_stack+0x18/0x1c)
[ 3.646116] r7:00000001 r6:000002fe r5:86b7b000 r4:0001e000
[ 3.665272] [<80013654>] (show_stack) from [<802a0d8c>] (dump_stack+0x24/0x28)
[ 3.698033] [<802a0d68>] (dump_stack) from [<80220594>] (ubifs_read
_node+0x29c/0x318)
[ 3.731419] [<802202f8>] (ubifs_read_node) from [<802206b8>] (ubifs_read_node_wbuf+0xa8/0x2d0)
[ 3.765910] r10:00000049 r9:00000003 r8:86b7b000 r7:8605c980 r6:000002fe r5:86015720
[ 3.800438] r4:0001e000
[ 3.816229] [<80220610>] (ubifs_read_node_wbuf) from [<8023db64>] (ubifs_tnc_read_node+0x50/0x144)
[ 3.852151] r10:86056b00 r9:8605c980 r8:86056b48 r7:00000003 r6:8605c980 r5:86b7b000
[ 3.887366] r4:86056b78
[ 3.903213] [<8023db14>] (ubifs_tnc_read_node) from [<80221814>] (tnc_read_node_nm+0xcc/0x1e8)
[ 3.938730] r7:86b7b1e8 r6:86b7b000 r5:8605c980 r4:86056b78
[ 3.958487] [<80221748>] (tnc_read_node_nm) from [<8022507c>] (ubifs_tnc_next_ent+0x144/0x1a8)
[ 3.993901] r7:86b7b1e8 r6:86b7b000 r5:86843c18 r4:00000048
[ 4.013594] [<80224f38>] (ubifs_tnc_next_ent) from [<80225194>] (ubifs_tnc_remove_ino+0xb4/0x144)
[ 4.049499] r10:86b7b960 r9:00008b9d r8:ffffffff r7:00000000 r6:8604b380 r5:86b7b000
[ 4.084965] r4:
8604bc60
[ 4.100908] [<802250e0>] (ubifs_tnc_remove_ino) from [<80227d28>] (ubifs_replay_journal+0xe80/0x14c8)
[ 4.136758] r10:86b7b960 r9:86843cf0 r8:8604bc40 r7:86b7b000 r6:8604b380 r5:00000000
[ 4.171625] r4:8604bc60
[ 4.187099] [<80226ea8>] (ubifs_replay_journal) from [<8021ca40>] (ubifs_mount+0x118c/0x183c)
[ 4.221308] r10:00000002 r9:00000000 r8:86011580 r7:86b7b000 r6:86028800 r5:86011580
[ 4.255908] r4:86b7b7d0
[ 4.271430] [<8021b8b4>] (ubifs_mount) from [<800cd5c4>] (mount_fs+0x1c/0xac)
[ 4.291814] r10:8085d6fc r9:808550cc r8:00000000 r7:8085d6fc r6:8085d6fc r5:86011500
[ 4.325815] r4:8021b8b4
[ 4.341252] [<800cd5a8>] (mount_fs) from [<800e5554>] (vfs_kern_mount+0x50/0xfc)
[ 4.374139] r6:00008001 r5:86011500 r4:86b5ae40
[ 4.391862] [<800e5504>] (vfs_kern_mount) from [<800e8070>] (do_mount+0x1a8/0xbc4)
[ 4.424750] r9:808550cc r8:860114c0 r7:86011500 r6:00008001 r5:00000060 r4:00000000
[ 4.458487] [<800e7ec8>] (do_
mount) from [<800e8e0c>] (SyS_mount+0x9c/0xc8)
[ 4.478608] r10:87db24e0 r9:80756f74 r8:00008001 r7:80756f74 r6:00000000 r5:86011500
[ 4.512618] r4:860114c0
[ 4.528003] [<800e8d70>] (SyS_mount) from [<808142c0>] (mount_block_root+0x140/0x268)
[ 4.561158] r8:00008001 r7:86027000 r6:86027000 r5:8083e858 r4:86027000
[ 4.581212] [<80814180>] (mount_block_root) from [<808145c0>] (prepare_namespace+0xa4/0x1a0)
[ 4.615653] r10:8083e838 r9:00000008 r8:80813600 r7:8083e834 r6:80882280 r5:8083e868
[ 4.650031] r4:8083e858
[ 4.665290] [<8081451c>] (prepare_namespace) from [<80813eec>] (kernel_init_freeable+0x1d0/0x1e0)
[ 4.700190] r5:80882280 r4:8080f308
[ 4.716823] [<80813d1c>] (kernel_init_freeable) from [<805f2cb8>] (kernel_init+0x10/0xf0)
[ 4.750876] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:805f2ca8
[ 4.785419] r4:00000000
[ 4.801082] [<805f2ca8>] (kernel_init) from [<8000f7f8>] (ret_from_fork+0x14/0x3c)
[ 4
.834654] r5:805f2ca8 r4:00000000
[ 4.853272] List of all partitions:
[ 4.869394] No filesystem could mount root, tried: ubifs
[ 4.887532] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[ 4.919980] ---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
...
Complete boot log is available here[3]
mtdinfo log:
root at colibri-vf:~# mtdinfo -a
Count of MTD devices: 4
Present MTD devices: mtd0, mtd1, mtd2, mtd3
Sysfs interface supported: yes
mtd0
Name: vf-bcb
Type: nand
Eraseblock size: 131072 bytes, 128.0 KiB
Amount of eraseblocks: 1 (131072 bytes, 128.0 KiB)
Minimum input/output unit size: 2048 bytes
Sub-page size: 2048 bytes
OOB size: 64 bytes
Character device major/minor: 90:0
Bad blocks are allowed: true
Device is writable: false
mtd1
Name: u-boot
Type: nand
Eraseblock size: 131072 bytes, 128.0 KiB
Amount of eraseblocks: 11 (1441792 bytes, 1.4 MiB)
Minimum input/output unit size: 2048 bytes
Sub-page size: 2048 bytes
OOB size: 64 bytes
Character device major/minor: 90:2
Bad blocks are allowed: true
Device is writable: false
mtd2
Name: u-boot-env
Type: nand
Eraseblock size: 131072 bytes, 128.0 KiB
Amount of eraseblocks: 4 (524288 bytes, 512.0 KiB)
Minimum input/output unit size: 2048 bytes
Sub-page size: 2048 bytes
OOB size: 64 bytes
Character device major/minor: 90:4
Bad blocks are allowed: true
Device is writable: true
mtd3
Name: ubi
Type: nand
Eraseblock size: 131072 bytes, 128.0 KiB
Amount of eraseblocks: 1008 (132120576 bytes, 126.0 MiB)
Minimum input/output unit size: 2048 bytes
Sub-page size: 2048 bytes
OOB size: 64 bytes
Character device major/minor: 90:6
Bad blocks are allowed: true
Device is writable: true
[0] http://developer.toradex.com/products/colibri-vf50
[1] http://git.toradex.com/cgit/linux-toradex.git/log/?h=toradex_vf_4.4
[2] http://git.toradex.com/cgit/u-boot-toradex.git/log/?h=2016.11-toradex
[3] http://pastebin.com/JgJMpGGQ
--
Bhuvan
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