topic PV device ID mapping in Operating System - HP-UX

PV device ID mapping

Ralph Grothe — Wed, 30 Jun 2004 05:59:02 GMT

Hi,

trying to identify powerfailed disks.
syslog.log is suggesting a VG No. that doesn't exist.
So I would cling to the hex device IDs.
Is a direct translation to /dev/dsk/c?t?d? valid, which would yield the three disks in our vgbz (see below)?

# grep -i 'LVM.*fail' /var/adm/syslog/syslog.log
Jun 24 23:01:15 saturn vmunix: LVM: Path (device 0x1f075700) to PV 1 in VG 21 Failed!
Jun 24 23:01:15 saturn vmunix: LVM: Path (device 0x1f076000) to PV 2 in VG 21 Failed!
Jun 24 23:01:15 saturn vmunix: LVM: vg[21]: pvnum=0 (dev_t=0x1f075600) is POWERFAILED
Jun 24 23:01:15 saturn vmunix: LVM: vg[21]: pvnum=1 (dev_t=0x1f075700) is POWERFAILED
Jun 24 23:01:15 saturn vmunix: LVM: vg[21]: pvnum=2 (dev_t=0x1f076000) is POWERFAILED

# strings /etc/lvmtab |grep 21

# vgdisplay -v vgbz|grep PV\ Name
PV Name /dev/dsk/c7t5d6
PV Name /dev/dsk/c7t5d7
PV Name /dev/dsk/c7t6d0

Re: PV device ID mapping

Robert-Jan Goossens — Wed, 30 Jun 2004 06:06:35 GMT

Hi Ralph,

Correct all three disks powerfailed.

Jun 24 23:01:15 saturn vmunix: LVM: vg[21]: pvnum=0 (dev_t=0x1f075600) is POWERFAILED -->c7t5d6
Jun 24 23:01:15 saturn vmunix: LVM: vg[21]: pvnum=1 (dev_t=0x1f075700) is POWERFAILED -->c7t5d7
Jun 24 23:01:15 saturn vmunix: LVM: vg[21]: pvnum=2 (dev_t=0x1f076000) is POWERFAILED -->c7t6d0

Regards,
Robert-Jan

Re: PV device ID mapping

Cheryl Griffin — Wed, 30 Jun 2004 07:01:25 GMT

The system is referring to the 21st volume group, but not by it's name. It should correspond to the 0xNN in the group and (r)lvol minor number.