On Fri, 01 Jul 2011 22:05:12 +0200, Alex Schuster wrote about [gentoo-user] LVM filter question:
[snip] > filter = [ "r|/dev/nbd.*|", "r|/dev/sdd|", "a/.*/" ] > > This should reject /dev/sdd from scanning. But it doesn't, pvscan > spins it up. Any idea why it is not being ignored? The regular expression that precedes the one involving /dev/sdd provides a clue: it would appear that LVM wraps the r.e. with ^ and $ so that it completes a string. So, your r.e. should read: r|/dev/sdd.*| which decodes to "reject ^/dev/sdd.*$ ". This suppresses the scans of /dev/sdd1, /dev/sdd2, etc. Now, you might not have any partitions on /dev/sdd, but LVM cannot readily know that without reading the partition table, which spins up the drive. I guess LVM doesn't trust or, at least, depend upon udev to supply the partition details. -- Regards, Dave [RLU #314465] *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-* dwn...@ntlworld.com (David W Noon) *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
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