powerfailed message and LV unavailable

[Dineshkumar Surpur]

Can someone tell me that why (LVM: vg[8]: pvnum=5 (dev_t=0x1f093400) is POWERFAILED) is going into POWERFAILED state there are no scsi I/O errors reported before POWERFAILED shows up. I have even tried chaging the timeout value to 90 sec using pvchange -t /dev/dsk/ and it has not helped. The LV state for this device shows as unavailable. We had lost access to the storage device when the problem showed up but now storage is all working and we have rebooted the host (servicegurard cluster) and did ioscan and vgscan -a and still is not helping. Doing dd (reads only) we see I/O from the host to the storage. Can't understand why showing up the powerfailed messages, OS is HPUX 11i.

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vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x00000000580ee800), from raw device 0x1f0c3300 (with priority: 0, and current flags: 0xd0) to raw device 0x1f093300 (with priority: 1, and current flags: 0x0).
vmunix: LVM: Recovered Path (device 0x1f0c3300) to PV 1 in VG 8.
vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x00000000580ee800), from raw device 0x1f093300 (with priority: 1, and current flags: 0x0) to raw device 0x1f0c3300 (with priority: 0, and current flags: 0x80).
vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x000000004db45040), from raw device 0x1f093400 (with priority: 0, and current flags: 0xd0) to raw device 0x1f0c3400 (with priority: 1, and current flags: 0x0).
vmunix: LVM: Recovered Path (device 0x1f093400) to PV 5 in VG 8.
vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x000000004db45040), from raw device 0x1f0c3400 (with priority: 1, and current flags: 0x0) to raw device 0x1f093400 (with priority: 0, and current flags: 0x80).
vmunix: LVM: Restored PV 1 to VG 8.
vmunix: LVM: Restored PV 5 to VG 8.
vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x00000000580ee800), from raw device 0x1f0c3300 (with priority: 0, and current flags: 0x50) to raw device 0x1f093300 (with priority: 1, and current flags: 0x0).
vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x000000004db45040), from raw device 0x1f093400 (with priority: 0, and current flags: 0x50) to raw device 0x1f0c3400 (with priority: 1, and current flags: 0x0).
vmunix: LVM: Recovered Path (device 0x1f093400) to PV 5 in VG 8.
vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x000000004db45040), from raw device 0x1f0c3400 (with priority: 1, and current flags: 0x0) to raw device 0x1f093400 (with priority: 0, and current flags: 0x0).
vmunix: LVM: Recovered Path (device 0x1f0c3300) to PV 1 in VG 8.
vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x00000000580ee800), from raw device 0x1f093300 (with priority: 1, and current flags: 0x0) to raw device 0x1f0c3300 (with priority: 0, and current flags: 0x0).
vmunix: LVM: Restored PV 1 to VG 8.
vmunix: LVM: Restored PV 5 to VG 8.
vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x00000000580ee800), from raw device 0x1f0c3300 (with priority: 0, and current flags: 0x50) to raw device 0x1f093300 (with priority: 1, and current flags: 0x0).
vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x000000004db45040), from raw device 0x1f093400 (with priority: 0, and current flags: 0x50) to raw device 0x1f0c3400 (with priority: 1, and current flags: 0x0).
vmunix: LVM: Recovered Path (device 0x1f093400) to PV 5 in VG 8.
vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x000000004db45040), from raw device 0x1f0c3400 (with priority: 1, and current flags: 0x0) to raw device 0x1f093400 (with priority: 0, and current flags: 0x0).
vmunix: LVM: Recovered Path (device 0x1f0c3300) to PV 1 in VG 8.
vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x00000000580ee800), from raw device 0x1f093300 (with priority: 1, and current flags: 0x0) to raw device 0x1f0c3300 (with priority: 0, and current flags: 0x0).
vmunix: LVM: Restored PV 1 to VG 8.
vmunix: LVM: vg[8]: pvnum=5 (dev_t=0x1f093400) is POWERFAILED
vmunix: LVM: Restored PV 5 to VG 8.
vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x00000000580ee800), from raw device 0x1f0c3300 (with priority: 0, and current flags: 0x50) to raw device 0x1f093300 (with priority: 1, and current flags: 0x0).

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[Dineshkumar Surpur]

Can somebody look and help me here.

[Court Campbell]

what is the output from

# ioscan -fnC disk

[Dineshkumar Surpur]

Well all the disk shows up as claimed state.Why do you get a POWERFAILED message? I saw some forum comments saying that when you loose access to a device but in our case we see reads happening and if there are any scsi write failure they should show up as write errors rather then powerfailed message.

[Dineshkumar Surpur]

Figured out the problem exists on the storage side and have resolved the issue.

[Dineshkumar Surpur]

Closed for the above reason.