Hello Zdenek, Thank you very much for your explanation. Regards, zhm On 6/5/19 6:20 PM, Zdenek Kabelac wrote: > Dne 03. 06. 19 v 15:03 Heming Zhao napsal(a): >> Hello, >> >> I met below filter action when executed 'vgextend'. >> why the filter take no effect on executing pvcreate or vgcreate? > >> # rpm -qa | grep lvm2 >> lvm2-clvm-2.02.180-8.16.x86_64 >> lvm2-cmirrord-2.02.180-8.16.x86_64 >> lvm2-2.02.180-8.16.x86_64 >> >> the filter rules: (you can see all the disk in /dev/disk/by-id/ are >> rejected) >> # grep filter /etc/lvm/lvm.conf | grep -v "#" >> filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|", >> "r|/dev/fd.*|", "r|/dev/cdrom|", "a/.*/" ] > > > Hi > > Filter with 'a|.*|' at the end will almost always never work. > As devices do have several names so if you reject it by one name, > you will likely accept it with another name. > > > So I'd highly recommend only these 2 variants that are 'easy to follow'. > > > 1. White-list devices you want to see and add r|.*| as the last rule. > ^^^^^^^^^^^^^^^ most recommended. > > 2. Pure list of reject rules (do not add any 'a' rule). > > Regards > > Zdenek > > > _______________________________________________ linux-lvm mailing list linux-lvm@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
