topic Re: swap error in Operating System - HP-UX

swap error

Sudhakar_7 — Thu, 13 Mar 2003 09:38:26 GMT

Hi,

I get the following error in my syslog, is it because of bad blocks? or is any other reason exist?

Mar 6 20:33:14 hpms1 vmunix: Page I/O error(1) while swapping from disk for device 0x03000000,
Mar 6 20:33:14 hpms1 vmunix: block #9224282, page addr = 11ed000.6fabb000
Mar 6 20:33:14 hpms1 vmunix: Making the above swap block unavailable for future use. Please check
Mar 6 20:33:14 hpms1 vmunix: for any possible hardware/firware errors on the swap
Mar 6 20:33:14 hpms1 vmunix: device IMMEDIATELY
Mar 6 20:36:03 hpms1 vmunix: Page I/O error(1) while swapping from disk for device 0x03000000,
Mar 6 20:36:03 hpms1 vmunix: block #9126130, page addr = 11ed000.6ac80000
Mar 6 20:36:03 hpms1 vmunix: Making the above swap block unavailable for future use. Please check
Mar 6 20:36:03 hpms1 vmunix: for any possible hardware/firware errors on the swap
Mar 6 20:36:03 hpms1 vmunix: device IMMEDIATELY

Is there any way to find and mark bad block on swap (for that matter on any fs)?

Regards

Sudhakar J

Re: swap error

Ravi_8 — Thu, 13 Mar 2003 09:45:31 GMT

Hi,

could you post the o/p
#dd if=/dev/dsk/cxtxdx of=/dev/null bs=1024K

Re: swap error

Ravi_8 — Thu, 13 Mar 2003 09:45:57 GMT

Hi,

could you post the o/p
#dd if=/dev/dsk/cxtxdx of=/dev/null bs=1024K

if you find any I/O error, then disk is in problem

Re: swap error

Donald Kok — Thu, 13 Mar 2003 09:48:07 GMT

Hi,
I think you have to disable the swap device, or make a new one. Then you need to reboot, to be able to check the device.

Swapdevices can not be disabled on the fly.

Good luck
Donald

Re: swap error

Stefan Farrelly — Thu, 13 Mar 2003 09:48:17 GMT

Only a dd will prove you have a bad block (dd if=/dev/vgXX/rlvolYY of=/dev/null). It will return with an I/O error, but no need to run it, you definitely have a bad block.

Its not critical, the kernel has mapped the bad block out so it wont be referenced but I would call HP to have the disk replaced.