volumes on prefered path

[Garry Taylor_3]

My volume groups created on a STK D280 will not stay on the prefered paths , I put them on controller A or B and they fail over to the other path after about 30 sec and stay there. How can I check the prefered path in lvm. My os is 11.11 Is there a command I can run for each CxTxDx

[Muthukumar_5]

lvdisplay -v

Autoswitch parameter is deciding that.

hth.

[Muthukumar_5]

# pvchange -S autoswitch pv_path will ask for input.

y LVM is directed to automatically
switch from the path it is using
whenever a better path to the
physical volume is available. LVM
will switch paths when a better
path recovers (after it had failed
earlier), or if the current path
fails and another path is
available. This is the default.

n LVM is directed to automatically
switch to using the best available
path only when the path currently
in use is unavailable. LVM will
continue using a specific path for
the physical volume as long as it
works, regardless of whether
another better path recovers from a
failure.

hth.

[Garry Taylor_3]

Thank you, so I can run the lvdisplay command and it will show me the prefered path and the alternate path, how can I change the prefered path to the alternate path

[RAC_1]

man pvchange
pvchange -s

(lowercase s option)

[Muthukumar_5 · Accepted solution]

To manually switch a physical volume to use another controller path:

# pvchange -s disk

hth.

[Bharat Katkar]

Even SAM would do it for you

# sam
Disk and FileSystems
Disk Devices
Choose the disk Path
Select Actions TAB

Regards,