HP-UX vPars and Integrity VM V6.3 Administrator Guide

If you are loading the VSP drivers, the devices must show up in ioscan with device files, after the
VSP reboot.
Commands that operate on attachable storage devices appear to hang
Accessing some attachable devices involve multiple system calls which altogether consume
observable time before completing. Commands such as hpvmcreate(1M) and hpvmmodify(1M)
that operate on such devices may appear to hang; such commands usually complete in about a
minute. The following are the examples of such usage:
# hpvmcreate -P guest -a dvd:avio_stor::disk:/dev/rdisk/disk5
# hpvmcreate -P guest -a dvd:avio_stor::null:/dev/rdisk/disk5
# hpvmmodify -P guest -a dvd:avio_stor::disk:/dev/rdisk/disk5
# hpvmmodify -P guest -a dvd:avio_stor::null:/dev/rdisk/disk5
Access errors on storage devices
The following are the access errors and suggestions for resolving the errors that are reported by
storage devices on both VSP and within guests.
• VSP error messages
The VSP's attempt to access a shared tape is denied when it is in use by any guests; a busy
error is returned. The following example describes the behavior of diskinfo on a tape which
is being used by a guest:
# diskinfo /dev/rtape/tape1_BEST
diskinfo: can't open /dev/rtape/tape1_BEST: Device busy
• Guest error messages
11i v3 guest — access error on a shared attached device
The attempt of a guest to access a shared tape is denied when it is in use by the VSP or
other guests. Applications receive a busy error in such cases. The following example
describes the behavior of diskinfo on a tape that is being used by another guest.
# diskinfo /dev/rtape/tape1_BEST
diskinfo: can't open /dev/rtape/tape1_BEST: Device busy
◦
◦ 11i v2 guest — access error on a shared attached device
The attempt of a guest to access a shared tape is denied when it is in use by the VSP or
other guests. Applications receive a no-device error in such cases. The following example
describes the behavior of diskinfo on a tape that is being used by another guest.
# diskinfo /dev/rmt/c7t0d0BEST
diskinfo: can't open /dev/rmt/c7t0d0BEST: No such device or address
A.2.2 NPIV storage devices
NPIV devices are not visible from guest EFI shell after being successfully added to guest
The EFI functionality to enumerate FC (NPIV) LUNs is switched off by default. For instructions to
turn it on, see Section 7.4.3.5 (page 106).
Guests with large number of NPIV HBAs take a long time to boot
The EFI setting that enumerates the FC devices might have been switched ON to obtain a list of
all NPIV devices at EFI shell. If the guests are configured with a large number of FC (NPIV) LUNs,
enumeration of these devices at the EFI shell might require a substantial time. The option to
enumerate FC LUNs at the EFI shell must be enabled only if required; it must (preferably) be disabled
after the purpose is met. For more information about EFI, see Section 7.4.3.5 (page 106).
268 Troubleshooting