scsi errors

From: McMullen, Anthony (mcmullen@setonhill.edu)
Date: Tue Oct 29 2002 - 21:23:04 EST


Running Solaris 5.8 on a Sun Ultra 10. System has two external scsi disks
that are auto-terminated and striped with RAID 0. We have been receiving
read and write errors in /var/adm/messages for some time now... Read /
Write errors sometimes point to target 3, sometimes target 4. also, we
sometimes see and error message indicating a reduction in transfer rate (see
below).

Disks, cables, scsi controller, disk enclosures have been replaced several
times. Errors persist.....

Any ideas?

Oct 29 03:40:41 reeveslib m64: [ID 308573 kern.info] m64#0: 1152x900, 4M
mappable, rev 4750.7c
Oct 29 08:43:46 reeveslib scsi: [ID 107833 kern.warning] WARNING:
/pci@1f,0/pci@1/scsi@1,1 (glm1):
Oct 29 08:43:46 reeveslib Target 4 reducing sync. transfer rate
Oct 29 08:43:46 reeveslib glm: [ID 923092 kern.warning] WARNING:
ID[SUNWpd.glm.sync_wide_backoff.6014]
Oct 29 08:43:46 reeveslib scsi: [ID 107833 kern.warning] WARNING:
/pci@1f,0/pci@1/scsi@1,1/sd@4,0 (sd19):
Oct 29 08:43:46 reeveslib Error for Command: write(10)
Error Level: Retryable
Oct 29 08:43:46 reeveslib scsi: [ID 107833 kern.notice] Requested
Block: 6341646 Error Block: 6341646
Oct 29 08:43:46 reeveslib scsi: [ID 107833 kern.notice] Vendor:
FUJITSU Serial Number: 9718056577
Oct 29 08:43:46 reeveslib scsi: [ID 107833 kern.notice] Sense Key:
Aborted Command
Oct 29 08:43:46 reeveslib scsi: [ID 107833 kern.notice] ASC: 0x47
(<vendor unique code 0x47>), ASCQ: 0xa1, FRU: 0x0
Oct 29 19:09:52 reeveslib scsi: [ID 107833 kern.warning] WARNING:
/pci@1f,0/pci@1/scsi@1,1/sd@3,0 (sd18):
Oct 29 19:09:52 reeveslib Error for Command: read(10)
Error Level: Retryable
Oct 29 19:09:52 reeveslib scsi: [ID 107833 kern.notice] Requested
Block: 12261710 Error Block: 12261725
Oct 29 19:09:52 reeveslib scsi: [ID 107833 kern.notice] Vendor:
FUJITSU Serial Number: 9704015351
Oct 29 19:09:52 reeveslib scsi: [ID 107833 kern.notice] Sense Key:
Media Error
Oct 29 19:09:52 reeveslib scsi: [ID 107833 kern.notice] ASC: 0x11
(unrecovered read error), ASCQ: 0x0, FRU: 0x0
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