Strange scsi messages

[lohmag]

Hello, I use freenas as iscsi share in windows. Recently my windows started to hang up when backup to Freenas is processing. In Windows I see this errors
In windows
http://clip2net.com/s/3v5SIFd
In Freenas

Code:

Mar  3 07:25:55 freenas (0:3:0/0): ctl_process_done: 31588 seconds
Mar  3 07:25:55 freenas (1:3:0/0): WRITE(16). CDB: 8a 00 00 00 00 04 74 9d 14 40 00 00 02 00 00 00
Mar  3 07:25:55 freenas (1:3:0/0): Tag: 0xb9002d00, type 1
Mar  3 07:25:55 freenas (1:3:0/0): ctl_process_done: 31588 seconds
Mar  3 07:25:55 freenas (1:3:0/0): WRITE(16). CDB: 8a 00 00 00 00 04 74 9d 1a 40 00 00 02 00 00 00
Mar  3 07:25:55 freenas (1:3:0/0): Tag: 0xb6002d00, type 1
Mar  3 07:25:55 freenas (1:3:0/0): ctl_process_done: 31588 seconds
Mar  3 07:25:55 freenas (1:3:0/0): WRITE(16). CDB: 8a 00 00 00 00 04 74 9d 20 40 00 00 02 00 00 00
Mar  3 07:25:55 freenas (1:3:0/0): Tag: 0xb3002d00, type 1
Mar  3 07:25:55 freenas (1:3:0/0): ctl_process_done: 31588 seconds
Mar  3 07:25:55 freenas (2:3:0/0): WRITE(16). CDB: 8a 00 00 00 00 04 74 9d 26 40 00 00 02 00 00 00
Mar  3 07:25:55 freenas (2:3:0/0): Tag: 0x29002d00, type 1

First thought that windows server failing physically under high load.
What does mean this strings - (1:3:0/0), (2:3:0/0), (0:3:0/0) ?
Maybe there is problem with hdd in freenas rack?

P.S. JUMBO is turned off

 

[mav@]

What does mean this strings - (1:3:0/0), (2:3:0/0), (0:3:0/0) ?

Those are: initiator id, target port, and target lun numbers.

Yes, make sure that your ZFS pool is operational and not overloaded. It is quite usual cause for delays. Though 10 hours is probably too much.