Alasdair G Kergon <agk@redhat.com> writes: > On Tue, Dec 13, 2005 at 12:19:39PM +0100, Trond Hasle Amundsen wrote: >> It would be neat if there was a way to flag that a particular volume >> group should not be activated by default, typically at boot time, >> i.e. running 'vgchange -ay' shouldn't activate it. This is especially >> useful in clustering environments, when you want to "share" a volume >> group across several nodes for redundancy, but only activate it on one >> node at a time. > > You can already do this using tagging. Ah... guess my mind was stuck with LVM1 :) > Documentation: > Man pages for lvm, lvm.conf, vgchange, lvchange & lvcreate. > > http://people.redhat.com/agk/talks/LVM2-LinuxTag2005/ > Tagging, Slide 30 onwards > > http://sources.redhat.com/cgi-bin/cvsweb.cgi/~checkout~/LVM2/doc/tagging.txt?rev=1.1&content-type=text/plain&cvsroot=lvm2 > original specification Thanks for the pointers, that really helped. But I can't get this to work. I create a section 'tags' in lvm.conf which defines what I want to use: tags { hosttags = 1 sg { host_list = [ "test-db1.uio.no" ] } } With this, the host test-db1 should get the tag '@sg', right? I configure 'volume_list' in the activation section to define which I want to activate on this host (I've tried without setting this, no change): volume_list = [ "internvg", "internvg2", "@*" ] I then add a tag '@sg' to the VG/LV in question: lvchange --addtag @sg cf-test1-vg/data vgchange --addtag @sg cf-test1-vg I've verified that the tags are set with '{vg,lv}s -o +tags', but '{vg,lv}s @sg' doesn't yield any output. I then try to activate the VG/LV: vgchange -ay cf-test1-vg lvchange -ay cf-test1-vg/data But it doesn't work. As long as the 'tags' section exists in the config file the LV 'cf-test1-vg/data' won't activate. I'm probably doing something wrong here, but I can't figure out what.. The config will obviously be somewhat more complicated in production. FWIW, the system is running RHEL4 with lvm2-2.01.14-2.0.RHEL4 and kernel 2.6.9-11.ELsmp. Another issue, possibly related: the 'lvm dumpconfig' command doesn't show the 'tags' section at all. Cheers, -- Trond Hasle Amundsen <t.h.amundsen@usit.uio.no> Center for Information Technology Services, University of Oslo _______________________________________________ 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/
