Legacy device file errors for SAN attached tape drives

[Tom Wolf_3]

Hello. We are using version C.7.11.444 of IUX-Recovery on our HP-UX 11.31 ia64 servers.

When we execute make_net_recovery, one of our HP-UX 11.31 hosts always generates the following error.

* Scanning system for IO devices...
ERROR: Unable to open device special file /dev/rmt/c11t0d1BEST: Device busy (errno = 16)


Another HP-UX 11.31 host generates this error when make_net_recovery is executed.

* Scanning system for IO devices...
ERROR: Unable to open device special file /dev/rmt/c12t0d1BEST: No such device or address (errno = 6)
ERROR: Unable to open device special file /dev/rmt/c9t0d0BEST: No such device or address (errno = 6)
ERROR: Unable to open device special file /dev/rmt/c12t0d0BEST: Device busy (errno = 16)


The make_net_recovery completes successfully on both hosts but we're concerned by these legacy device file errors from our SAN attached tape drives. The ioscan output for these devices doesn't show anything unusual.

Any thoughts on why these errors are occurring and how to clear them?

Thanks in advance.

Tom Wolf

[Duncan Edmonstone]

Stale device files?

Whats' the output of

lssf /dev/rmt/c11t0d1BEST


and

lssf /dev/rmt/c12t0d1BEST
lssf /dev/rmt/c9t0d0BEST
lssf /dev/rmt/c12t0d0BEST

If it shows a HW path of ??? you can just rmsf the device files...

HTH

Duncan

[Tom Wolf_3]

Hello.
The devices look fine.


# lssf /dev/rmt/c11t0d1BEST
stape card instance 11 SCSI target 0 SCSI LUN 1 AT&T best density available at address 0/3/1/1.32.4.255.0.0.1 /dev/rmt/c11t0d1BEST

# lssf /dev/rmt/c12t0d1BEST
stape card instance 12 SCSI target 0 SCSI LUN 1 AT&T best density available at address 0/3/1/1.32.8.255.0.0.1 /dev/rmt/c12t0d1BEST

# lssf /dev/rmt/c9t0d0BEST
stape card instance 9 SCSI target 0 SCSI LUN 0 AT&T best density available at address 0/3/1/1.32.15.255.0.0.0 /dev/rmt/c9t0d0BEST

[Tom Wolf_3]

Oops...missed one.

# lssf /dev/rmt/c12t0d0BEST
stape card instance 12 SCSI target 0 SCSI LUN 0 AT&T best density available at address 0/3/1/1.32.8.255.0.0.0 /dev/rmt/c12t0d0BEST

[Bertrand Doye]

This is expected if norewind on close is disabled:

# scsimgr get_attr -d estape -a norewind_close_disabled  

        DRIVER estape GLOBAL ATTRIBUTES:

name = norewind_close_disabled

current = 1

default = 0

saved = 1

check out of IUX:

# mt -f  /dev/rmt/c18t11d0BEST status 

on tape open: No such device or address

# mt -f  /dev/rmt/c18t11d0BESTnb status

Drive:  HP Ultrium 3-SCSI

Format:

Status: Tape media is not present

File:   0

Block:  0