Greetings,

 

today I received a notification that one of my disks has read errors (13). I wanted to investigate but looking at the smart values, but I can't spin up the drive.

The disk log information:

May 21 19:59:05 sirbear kernel: sd 9:0:0:0: [sdg] 7814037168 512-byte logical blocks: (4.00 TB/3.64 TiB)
May 21 19:59:05 sirbear kernel: sd 9:0:0:0: [sdg] 4096-byte physical blocks
May 21 19:59:05 sirbear kernel: sd 9:0:0:0: [sdg] Write Protect is off
May 21 19:59:05 sirbear kernel: sd 9:0:0:0: [sdg] Mode Sense: 00 3a 00 00
May 21 19:59:05 sirbear kernel: sd 9:0:0:0: [sdg] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
May 21 19:59:05 sirbear kernel: sdg: sdg1
May 21 19:59:05 sirbear kernel: sd 9:0:0:0: [sdg] Attached SCSI removable disk
May 21 19:59:15 sirbear emhttpd: WDC_WD40EZRX-00SPEB0_WD-WCC4EPA9UX7P (sdg) 512 7814037168
May 21 19:59:15 sirbear kernel: mdcmd (6): import 5 sdg 64 3907018532 0 WDC_WD40EZRX-00SPEB0_WD-WCC4EPA9UX7P
May 21 19:59:15 sirbear kernel: md: import disk5: (sdg) WDC_WD40EZRX-00SPEB0_WD-WCC4EPA9UX7P size: 3907018532
May 21 19:59:17 sirbear emhttpd: shcmd (33): /usr/local/sbin/set_ncq sdg 1
May 21 19:59:17 sirbear root: set_ncq: setting sdg queue_depth to 1
May 21 19:59:17 sirbear emhttpd: shcmd (34): echo 128 > /sys/block/sdg/queue/nr_requests
May 21 20:01:17 sirbear emhttpd: shcmd (176): /usr/local/sbin/set_ncq sdg 1
May 21 20:01:17 sirbear emhttpd: shcmd (177): echo 128 > /sys/block/sdg/queue/nr_requests
May 22 03:33:07 sirbear kernel: sd 9:0:0:0: [sdg] Stopping disk
May 22 03:33:07 sirbear kernel: sd 9:0:0:0: [sdg] Start/Stop Unit failed: Result: hostbyte=0x04 driverbyte=0x00

The strange thing: the unRaid webGui shows the disk as spun up in the Main and Dashboard view, but when I click on the disk to get to the SMART values it says the disk must be spun up.

I also attached my diagnostics, but the SMART for the disk sdg isn't present.

sirbear-diagnostics-20180522-2006.zip

Disk dropped offline and reconnected with a different identifier, but since there's no parity it wasn't disabled, power down, check/replace cables, power back on and post new diags.

Thanks for the fast reply!

 

I just checked the cables, couldn't find anything amiss but changed the SATA-cable just to be sure. Booted the server back up and got a dia before and after I started the array.

The disk behaves fine right now and I for my noob knowledge the SMART-values don't look that bad.

sirbear-diagnostics-20180522-2038_before_Array_start.zip

sirbear-diagnostics-20180522-2039_after_Array_start.zip

SMART looks fine, most likely a cable/connection issue.

Thanks for looking over it, as stated above, I changed the SATA cable. Will look at this drive the next couple of days more carefully and if it acts up again I will post here. Thanks for the ultra fast help ❤️

Edited May 23, 20188 yr by Dr_Cox1911