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Forum Discussion
volume degraded
Hi, I took over our ReadyNAS environment and one ReadyNAS is in degraded state.It's configured in RAID 6. First such error was: "Volume: volume data health changed from Redundant to Degraded"...
What do you see in disk_info.log and smart_history.log for that disk?
Hi,
I don't see anything unusual for sdm in the disk_info.log:
Device: sdm
Controller: 0
Channel: 3
Model: WDC WD4000F9YZ-09N20L1
Serial: WD-WCC5D0HH7DHH
Firmware: 01.01A02
Class: SATA
RPM: 7200
Sectors: 7814037168
Pool: data
PoolType: RAID 6
PoolState: 3
PoolHostId: 43f68b06
Health data
ATA Error Count: 0
Reallocated Sectors: 0
Reallocation Events: 0
Spin Retry Count: 0
Current Pending Sector Count: 0
Uncorrectable Sector Count: 0
Temperature: 41
Start/Stop Count: 7
Power-On Hours: 16538
Power Cycle Count: 7
Load Cycle Count: 4
and no error in smart_history.log:
model serial realloc_sect realloc_evnt spin_retry_cnt ioedc cmd_timeouts pending_sect uncorrectable_err ata_errors timestamp time
-------------------- -------------------- ------------ ------------ -------------- ---------- ------------ ------------ ----------------- ---------- ---------- -------------------
WDC WD4000F9YZ-09N20 WD-WCC5D0HH7DHH 0 0 0 -1 -1 0 0 0 1448002169 2015-11-20 06:49:29
However, there have been bunch of errors for sdm in messages.log file.
I have a tough time attaching the messages.log file. Tried messages.log, messages.txt, and even converted to pdf. Will try attach again after this post.
Please advise. Thanks,
Please see attached.
I suggest powering down the NAS, and then testing sdm in a Windows PC with Western Digital's lifeguard program.
Thanks but this NAS is at a remote site so it's a bit difficult to do at this moment.
I also found in kernel.log, there are alot of entries like below logged every second. Does it pretty much imply the disk is due to be replaced?
~~~~~~
Mar 20 14:34:02 ut-backup03 kernel: blk_update_request: I/O error, dev sdm, sector 9437257
Mar 20 14:34:02 ut-backup03 kernel: Buffer I/O error on dev sdm3, logical block 1, async page read
Mar 20 14:34:02 ut-backup03 kernel: ata8: EH complete
Mar 20 14:34:02 ut-backup03 kernel: ata8.00: exception Emask 0x0 SAct 0x2000040 SErr 0x0 action 0x0
Mar 20 14:34:02 ut-backup03 kernel: ata8.00: irq_stat 0x40000008
Mar 20 14:34:02 ut-backup03 kernel: ata8.00: failed command: READ FPDMA QUEUED
Mar 20 14:34:02 ut-backup03 kernel: ata8.00: cmd 60/08:30:48:00:90/00:00:00:00:00/40 tag 6 ncq 4096 in
Mar 20 14:34:02 ut-backup03 kernel: res 41/40:00:49:00:90/00:00:00:00:00/40 Emask 0x409 (media error) <F>
Mar 20 14:34:02 ut-backup03 kernel: ata8.00: status: { DRDY ERR }
Mar 20 14:34:02 ut-backup03 kernel: ata8.00: error: { UNC }
Mar 20 14:34:02 ut-backup03 kernel: ata8.00: configured for UDMA/133
Mar 20 14:34:02 ut-backup03 kernel: sd 8:0:0:0: [sdm] tag#6 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Mar 20 14:34:02 ut-backup03 kernel: sd 8:0:0:0: [sdm] tag#6 Sense Key : Medium Error [current] [descriptor]
Mar 20 14:34:02 ut-backup03 kernel: sd 8:0:0:0: [sdm] tag#6 Add. Sense: Unrecovered read error - auto reallocate failed
Mar 20 14:34:02 ut-backup03 kernel: sd 8:0:0:0: [sdm] tag#6 CDB: Read(16) 88 00 00 00 00 00 00 90 00 48 00 00 00 08 00 00
Mar 20 14:34:02 ut-backup03 kernel: blk_update_request: I/O error, dev sdm, sector 9437257
Mar 20 14:34:02 ut-backup03 kernel: Buffer I/O error on dev sdm3, logical block 1, async page read
Mar 20 14:34:02 ut-backup03 kernel: ata8: EH complete
Mar 20 14:34:02 ut-backup03 kernel: BTRFS: could not find root 8
Mar 20 14:34:02 ut-backup03 kernel: BTRFS: could not find root 8~~~~~~
thanks.
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