Autopath Errors

[Ty Roberts]

I have been getting some autopath errors in my syslog, and even though they appear to have corrected themselves, I was wondering if someone could help me determine how to trace back the disk & Volume Group that was having problems. I have attached a sample from the syslog and would especially like to know how to determine how to link back "VG 34" to one on the system.

Jun 30 11:36:11 wcores10 vmunix:
Jun 30 11:36:11 wcores10 vmunix: AUTOPATH: Path 0x1f3bd100 failed! Rerouting IO to alternate path
Jun 30 11:36:11 wcores10 vmunix: LVM: Recovered Path (device 0x1f44d100) to PV 0 in VG 34.
Jun 30 11:36:16 wcores10 vmunix: LVM: Restored PV 0 to VG 34.
Jun 30 11:36:18 wcores10 vmunix: AUTOPATH: Path 0x1f3bd100 recovered
Jun 30 11:36:59 wcores10 vmunix: AUTOPATH: Path 0x1f44d100 failed! Rerouting IO to alternate path
Jun 30 11:37:00 wcores10 vmunix: LVM: Recovered Path (device 0x1f44d100) to PV 0 in VG 34.
Jun 30 11:37:00 wcores10 vmunix: LVM: Restored PV 0 to VG 34.
Jun 30 11:37:08 wcores10 vmunix: AUTOPATH: Path 0x1f44d100 recovered
Jun 30 11:37:08 wcores10 vmunix:
Jun 30 11:50:20 wcores10 vmunix:
Jun 30 11:50:20 wcores10 vmunix: AUTOPATH: Path 0x1f44d100 failed! Rerouting IO to alternate path
Jun 30 11:50:20 wcores10 vmunix: LVM: Recovered Path (device 0x1f44d100) to PV 0 in VG 34.
Jun 30 11:50:20 wcores10 vmunix: LVM: Restored PV 0 to VG 34.
Jun 30 11:50:29 wcores10 vmunix: AUTOPATH: Path 0x1f44d100 recovered



Thanks!

[Sundar_7 · Accepted solution]

Hi,

I could be wrong here but I will tell you my understanding.

Recovered Path (device 0x1f44d100) to PV 0 in VG 34.

To find the device file

# cd /dev/dsk
# ls -lrt | grep 44d100

Remove the 0x1f from the error message and grep for it.

To find out the VG, run pvdisplay on the device file you get from the above command

# pvdisplay /dev/dsk/ | grep "VG"

the VG number it refers in the message must match the minor number of the group control file of the VG

# cd /dev
# find . -name group -exec ls -lrt {} \;

Take the minor number of the group control file and convert it to decimal from hex and you will get the VG number displayed in the error message.

Hope this helps