So.. I have been running rc3 since release and today this has happened twice:

Any ideas?  It seems to require a reboot to get it to recover.. all shares stop working and file access stops

 

 

May 29 21:20:26 unraid kernel: sas: command 0xe94ef240, task 0xf1b58140, timed out: BLK_EH_NOT_HANDLED

May 29 21:20:26 unraid kernel: sas: Enter sas_scsi_recover_host

May 29 21:20:26 unraid kernel: sas: trying to find task 0xf1b58140

May 29 21:20:26 unraid kernel: sas: sas_scsi_find_task: aborting task 0xf1b58140

May 29 21:20:26 unraid kernel: drivers/scsi/mvsas/mv_sas.c 1818:<7>mv_abort_task() mvi=f7580000 task=f1b58140 slot=f7591710 slot_idx=x6

May 29 21:20:26 unraid kernel: sas: sas_scsi_find_task: querying task 0xf1b58140

May 29 21:20:26 unraid kernel: drivers/scsi/mvsas/mv_sas.c 1747:mvs_query_task:rc= 5

May 29 21:20:26 unraid kernel: sas: sas_scsi_find_task: task 0xf1b58140 failed to abort

May 29 21:20:26 unraid kernel: sas: task 0xf1b58140 is not at LU: I_T recover

May 29 21:20:26 unraid kernel: sas: I_T nexus reset for dev 0600000000000000

May 29 21:20:26 unraid kernel: drivers/scsi/mvsas/mv_sas.c 2198:port 6 ctrl sts=0x89800.

May 29 21:20:26 unraid kernel: drivers/scsi/mvsas/mv_sas.c 2200:Port 6 irq sts = 0x1001001

May 29 21:20:26 unraid kernel: drivers/scsi/mvsas/mv_sas.c 2226:phy6 Unplug Notice

May 29 21:20:26 unraid kernel: drivers/scsi/mvsas/mv_sas.c 2198:port 6 ctrl sts=0x199800.

May 29 21:20:26 unraid kernel: drivers/scsi/mvsas/mv_sas.c 2200:Port 6 irq sts = 0x1001081

May 29 21:20:26 unraid kernel: drivers/scsi/mvsas/mv_sas.c 2198:port 6 ctrl sts=0x199800.

May 29 21:20:26 unraid kernel: drivers/scsi/mvsas/mv_sas.c 2200:Port 6 irq sts = 0x10000

May 29 21:20:26 unraid kernel: drivers/scsi/mvsas/mv_sas.c 2253:notify plug in on phy[6]

May 29 21:20:26 unraid kernel: drivers/scsi/mvsas/mv_sas.c 1338:port 6 attach dev info is 0

May 29 21:20:26 unraid kernel: drivers/scsi/mvsas/mv_sas.c 1340:port 6 attach sas addr is 6

May 29 21:20:26 unraid kernel: drivers/scsi/mvsas/mv_sas.c 379:phy 6 byte dmaded.

May 29 21:20:26 unraid kernel: sas: sas_form_port: phy6 belongs to port5 already(1)!

May 29 21:20:28 unraid kernel: drivers/scsi/mvsas/mv_sas.c 1701:mvs_I_T_nexus_reset for device[5]:rc= 0

May 29 21:20:28 unraid kernel: sas: I_T 0600000000000000 recovered

May 29 21:20:28 unraid kernel: sas: sas_ata_task_done: SAS error 8d

May 29 21:20:28 unraid kernel: ata9: sas eh calling libata port error handler

May 29 21:20:28 unraid kernel: ata10: sas eh calling libata port error handler

May 29 21:20:28 unraid kernel: ata11: sas eh calling libata port error handler

May 29 21:20:28 unraid kernel: ata12: sas eh calling libata port error handler

May 29 21:20:28 unraid kernel: ata13: sas eh calling libata port error handler

May 29 21:20:28 unraid kernel: ata14: sas eh calling libata port error handler

May 29 21:20:28 unraid kernel: ata14.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x0 t0

May 29 21:20:28 unraid kernel: ata14.00: failed command: READ FPDMA QUEUED

May 29 21:20:28 unraid kernel: ata14.00: cmd 60/00:00:c7:bd:d7/02:00:2d:00:00/40 tag 0 ncq 262144 in

May 29 21:20:28 unraid kernel:          res 41/40:00:3a:be:d7/00:00:2d:00:00/40 Emask 0x409 (media error) <F>

May 29 21:20:28 unraid kernel: ata14.00: status: { DRDY ERR }

May 29 21:20:28 unraid kernel: ata14.00: error: { UNC }

May 29 21:20:28 unraid kernel: ata14.00: configured for UDMA/133

May 29 21:20:28 unraid kernel: ata14: EH complete

May 29 21:20:28 unraid kernel: ata15: sas eh calling libata port error handler

May 29 21:20:28 unraid kernel: sas: --- Exit sas_scsi_recover_host

May 29 21:20:59 unraid kernel: sas: command 0xe94ef240, task 0xf1b58000, timed out: BLK_EH_NOT_HANDLED

I think more information is going to be required. Could you please describe what you are/were doing when the crash occured and post a full syslog. Also, try running memtest for at least 2-3 passes to ensure your memory is OK. Are you running ANY addons with rc3?