Filtering issue, while trying to create a volume in Linux

Question

Just pulled in 3 new luns on a Linux system that is using Powerpath 4.5.3. We are up to 37 volumes, listing as emcpowera through emcpowerbb. I am able to see all of the volumes using powermt display dev=all, and I can fdisk the new volumes, however when I try to run a pvcreate of the last two volumes, I get the following error:

Device /dev/emcpowerba1 not found (or ignored by filtering).
Device /dev/emcpowerbb1 not found (or ignored by filtering).

Not sure what filtering file to look at, we check /etc/lvm/lvm.conf removed all of our filter lines, still same issue. Does anyone have any ideas?

xe2sdc · Answer

Maybe the 3 new luns comes from another system ??
Maybe they already have a partition table on them ??

Can you please try to scratch the lun and run pvcreate again ??

# dd if=/dev/random of=/dev/emcpowerba1 bs=1M count=8

If you want you can also try to run pvcrate with "-vvvv" option.. Maybe it will give you better details on why it's failing.

Message was edited by:
Stefano Del Corno

schilling_43666e · Answer

That was it, ran the dd and this corrected the issue. Thanks

PowerPath

Filtering issue, while trying to create a volume in Linux

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