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Showing posts with label device error. Show all posts
Showing posts with label device error. Show all posts

Monday, July 21, 2008

LUN: POWERFAILED

I did encounter this error eons ago but never really had the chance to write about it.

Anyway, I'll be using some inputs provided by my colleagues. Please take note that this is merely for conversion or identifying the disk that have a power failure.

From the /var/adm/syslog.log:
...
Jul 20 21:54:50 server4385 vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x0000000048753840), from raw device 0x1f060100 (with priority: 0, and current flags: 0x40) to raw device 0x1f078100 (with priority: 1, and current flags: 0x0).
Jul 20 21:54:50 server4385 vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x0000000048753840), from raw device 0x1f060100 (with priority: 0, and current flags: 0x40) to raw device 0x1f078100 (with priority: 1, and current flags: 0x0).
Jul 20 21:54:50 server4385 vmunix: LVM: Restored PV 1 to VG 1.
Jul 20 21:54:50 server4385 vmunix: LVM: Restored PV 1 to VG 1.
Jul 20 21:54:54 server385 vmunix: LVM: vg[1]: pvnum=1 (dev_t=0x1f078100) is POWERFAILED
Jul 20 21:54:54 server4385 vmunix: LVM: vg[1]: pvnum=1 (dev_t=0x1f078100) is POWERFAILED
Jul 20 21:55:04 server4385 vmunix: LVM: Recovered Path (device 0x1f060100) to PV 1 in VG 1.
Jul 20 21:55:04 server4385 vmunix: LVM: Recovered Path (device 0x1f060100) to PV 1 in VG 1.
Jul 20 21:55:04 server4385 vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x0000000048753840), from raw device 0x1f078100 (with priority: 1, and current flags: 0x0) to raw device 0x1f060100 (with priority: 0, and current flags: 0x80).
Jul 20 21:55:04 server4385 vmunix: LVM: Performed a switch for Lun ID = 0 (pv = 0x0000000048753840), from raw device 0x1f078100 (with priority: 1, and current flags: 0x0) to raw device 0x1f060100 (with priority: 0, and current flags: 0x80).
...

We'll use the entry "dev_t=0x1f078100". To convert to the exact disk, take the last six (6) digits, e.g., 078100, and check from /dev/dsk:

# ll /dev/dsk | grep 078100
brw-r----- 1 bin sys 31 0x078100 Apr 19 23:47 c7t8d1

Now, this represents the device file for the disk. Since this is being used for LVM, we can use pvdisplay, vgdisplay, or lvdisplay to check partly on the status of the data written on it.

Rubbish said... at 1 comment:
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