[SOLVED] various HDD problems

tl;dr: PSU problem.

Hi,

I've had a metric ton of problems with my unRAID box. Fortunately it turned out that it was just the PSU was aging and it could no longer support all the HDDs in the same 12V lane. I'm posting this so that others who might google for  this can get one more search result.

So, problems:

-write errors

-hangups

-parity disk getting disabled

-disks getting frozen

-links getting reset

-reiserfs i/o failures

-cannot complete a parity resync without getting so many errors the sync stops and the parity disk gets disabled

Oct 17 03:42:31 Storage kernel: end_request: I/O error, dev sdf, sector 77024392 (Errors)
Oct 17 03:42:31 Storage kernel: md: disk0 write error (Errors)
Oct 17 03:42:31 Storage kernel: handle_stripe write error: 77024328/0, count: 1 (Errors)
Oct 17 03:42:31 Storage kernel: md: disk0 write error (Errors)

Oct 17 03:12:47 Storage kernel: ata6.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0 (Errors)
Oct 17 03:12:47 Storage kernel: ata6.00: irq_stat 0x40000001 (Drive related)
Oct 17 03:12:47 Storage kernel: ata6.00: failed command: WRITE DMA EXT (Minor Issues)
Oct 17 03:12:47 Storage kernel: ata6.00: cmd 35/00:00:c8:54:0e/00:04:00:00:00/e0 tag 0 dma 524288 out (Drive related)
Oct 17 03:12:47 Storage kernel:          res 51/10:00:c8:54:0e/00:04:00:00:00/e0 Emask 0x81 (invalid argument) (Errors)
Oct 17 03:12:47 Storage kernel: ata6.00: status: { DRDY ERR } (Drive related)
Oct 17 03:12:47 Storage kernel: ata6.00: error: { IDNF } (Errors)
Oct 17 03:12:47 Storage kernel: ata6.00: configured for UDMA/133 (Drive related)
Oct 17 03:12:47 Storage kernel: ata6: EH complete (Drive related)

Oct 17 03:24:09 Storage kernel: ata4.00: exception Emask 0x12 SAct 0x0 SErr 0x400501 action 0x6 frozen (Errors)
Oct 17 03:24:09 Storage kernel: ata4.00: irq_stat 0x08000000, interface fatal error (Errors)
Oct 17 03:24:09 Storage kernel: ata4: SError: { RecovData UnrecovData Proto Handshk } (Errors)
Oct 17 03:24:09 Storage kernel: ata4.00: failed command: READ DMA EXT (Minor Issues)
Oct 17 03:24:09 Storage kernel: ata4.00: cmd 25/00:00:30:b9:f0/00:04:01:00:00/e0 tag 0 dma 524288 in (Drive related)
Oct 17 03:24:09 Storage kernel:          res 50/00:00:2f:b9:f0/00:00:01:00:00/e0 Emask 0x12 (ATA bus error) (Errors)
Oct 17 03:24:09 Storage kernel: ata4.00: status: { DRDY } (Drive related)
Oct 17 03:24:09 Storage kernel: ata4: hard resetting link (Minor Issues)
Oct 17 03:24:10 Storage kernel: ata4: SATA link up 6.0 Gbps (SStatus 133 SControl 300) (Drive related)
Oct 17 03:24:10 Storage kernel: ata4.00: configured for UDMA/133 (Drive related)
Oct 17 03:24:10 Storage kernel: ata4: EH complete (Drive related)

Oct 17 04:20:10 Storage kernel: REISERFS error (device md6): vs-13070 reiserfs_read_locked_inode: i/o failure occurred trying to find stat data of [15 17 0x0 SD] (Errors)
Oct 17 04:20:10 Storage kernel: REISERFS error (device md6): vs-13070 reiserfs_read_locked_inode: i/o failure occurred trying to find stat data of [15 66 0x0 SD] (Errors)

All these repeating for pages and pages and pages and pages. I thought my WD RED 3TBs were dying, but they were just dying for a bit more juice.

The solution was actually simple, as it turned out: I put 3 of my 7 disks on another 12V lane, and the problems went away. Yes, the more permanent solution will be getting another PSU. (I'm looking at the Seasonic X-400, as I have another and I've had very good experience with it, and it can actually supply up to 600W, and has one 12V lane only.)