Numerical value of pv IO Timeout?

[Romaric Guilloud]

Hello,
How to know what is the numerical value of pv timeout when it is set to "default"?:
#pvdisplay -v /dev/dsk/c4t0d0 |grep -i timeout
IO Timeout (Seconds) default

Them man page says "the default value is supplied by the device driver associated with the physical device", so how to gather the value supplied by the device as it can differ from one device to another?
Thanks in advance for your help.
R. Guilloud.

[Sridhar Bhaskarla]

Hi Romaric,

For 'sdisk and disc3' drivers which are most commonly used, the default timeout is 30 seconds. The appropriate value is 180 seconds. You can change it using the command 'pvchange -t 180 /dev/dsk/cxtydz'.

-Sri

[KCS_1]

Hi,

From the man page of pvchange, the value of physical disk driver timeout is "0" .

Set the IO_timeout value for a physical volume to 60 seconds:

# pvchange -t 60 /dev/dsk/c2t0d2

Set the IO_timeout value for a physical volume to zero (0) to use the driver default:

# pvchange -t 0 /dev/dsk/c2t0d2




Regards.

[Romaric Guilloud]

OK, but what is the command to retrieve the value associated to the driver itself?

[Sridhar Bhaskarla]

There isn't any command to retrieve that value. It's driver specific and probably if you look the files under /usr/conf directory, you may find it.

The PV timeout value of 30 is commonly known.

-Sri