ada drives keep timing out!

[Dr Josef Karthauser]

Hi there,

I reported this last year, but I’d like to revisit it as it must have a software remedy. I know that I’m not the only one to have reported the problem.

I have a ZFS pool with a number of western digital drives in it (WDC WD1000FYPS-01ZKB0 02.01B01).

Periodically a drive times out with this error:

(ada2:ahcich2:0:0:0): Periph destroyed
(aprobe0:ahcich2:0:0:0): NOP. ACB: 00 00 00 00 00 00 00 00 00 00 00 00
(aprobe0:ahcich2:0:0:0): CAM status: ATA Status Error
(aprobe0:ahcich2:0:0:0): ATA status: d1 (BSY DRDY SERV ERR), error: 04 (ABRT )
(aprobe0:ahcich2:0:0:0): RES: d1 04 ff ff ff ff ff ff ff ff ff
(aprobe0:ahcich2:0:0:0): Error 5, Retries exhausted

and drops out of the pool.

I have to reset the bus to get it to reattach:

    camcontrol scan 2
    camcontrol rescan 2

I have four drives and recently they detached with this frequency:

	Jan 12 13:25:23 server kernel: (ada3:ahcich3:0:0:0): Periph destroyed
	Jan 22 22:07:57 server kernel: (ada0:ahcich0:0:0:0): Periph destroyed
	Jan 29 08:12:28 server kernel: (ada1:ahcich1:0:0:0): Periph destroyed
	Jan 30 02:16:45 server kernel: (ada3:ahcich3:0:0:0): Periph destroyed
	Feb  8 20:07:39 server kernel: (ada1:ahcich1:0:0:0): Periph destroyed
	Feb 19 02:27:18 server kernel: (ada0:ahcich0:0:0:0): Periph destroyed
	Feb 20 08:24:40 server kernel: (ada2:ahcich2:0:0:0): Periph destroyed

The box is a:

      FreeBSD server 9.2-STABLE FreeBSD 9.2-STABLE #1 r253253M: Mon Mar 10 22:53:08 GMT 2014

Is this likely to have been address in a more recent FreeBSD or is it still an issue today and can I work with someone to find a remedy?

Many thanks
Joe