On 06/15/10 16:24, Phillip Susi wrote: > On 6/15/2010 3:17 PM, Takahiro Yasui wrote: >> Everytime lvm command is executed, all PVs are accessed. >> >> This is a known issue and what we should fix. If there are a lot of >> PVs, execution of lvm command could take a long time. The scan also >> affects error recovery time of lvm mirror. >> >> This is an old reference. >> >> Introduce metadata cache feature >> https://www.redhat.com/archives/lvm-devel/2009-April/msg00014.html > > This seems to limit the number of metadata copies on pvs that are > accessed to one, but I am seeing even block devices that are not pvs > accessed, like it is scanning for new pvs. This patch seems like it > would help some though, but it is over a year old. Did it never get > applied? As for accessing block devices, you can limit accesses to those devices by filter option in lvm.conf. This is an example which allows accesses only to /dev/sd* filter = [ "a|/dev/sd|", "r|.*|" ] You can specify more strict rule like filter = [ "a|/dev/sd[a-z]|", "r|.*|" ] For my patch, I posted it one year ago but I need to have more discussion how to solve this issue on lvm-devel. Thanks, Taka _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
