i think this is strange that this guy can at least create 1500 lv but fail to activate them all. here what i found is i even can not create ~300 lv. ming On Thu, 2005-07-28 at 15:32 -0500, Jonathan E Brassow wrote: > I think the problem you are seeing is similar to the one found in > bugzilla (164198). Would you be willing to add some notes there? It > will give you a place to track the progress... > > https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=164198 > > brassow > > On Jul 28, 2005, at 2:18 PM, Ming Zhang wrote: > > > On Thu, 2005-07-28 at 12:09 -0700, Nathaniel Stahl wrote: > >> We'd like to be able to create a large number of LVs (potentially > >> numbering in the low thousands). I get failure after LV 226 or so, > >> though - "VG VolGroup01 metadata writing failed". > >> > >> RedHat claims this should be possible with LVM2 on the following web > >> page: > >> > >> http://www.redhat.com/magazine/009jul05/features/lvm2/ > >> > >> I admit to being a little suprised at the 2^32 max LV claim - I was > >> figuring 2^20 as the theoretical max given 2.6's 32 bit device > >> numbering > >> scheme (20 bits for minor, 12 bits for major). > >> > >> The LVM2 code, at least version 2.00.25 as distributed in FC3, appears > >> to have a check that the minor number is strictly less than 256. > >> Removing this check allows for the creation of working LVs using > >> minors > >> greater than 256, but LV creation fails with the error "VG VolGroup01 > >> metadata writing failed" creating the 227th LV. Even with the minor > >> limit in place - I can't create more than 226 LVs. > > > > i asked this question before. there is a hard coded limitation in lvm > > metadata, so the real number is like this, limited around 2xx. the > > limitation will be removed in near future. how near? i do not know. :) > > > > > >> > >> Is there a patch that allows this limit to be broken? Should I be > >> using > >> a newer version of the tools? If not currently possible, is this > >> something that will be in the near future? > >> > >> Thanks for any help/advice you can give. > >> > >> -Nate Stahl > >> > >> _______________________________________________ > >> 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/ > > > > _______________________________________________ > > 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/ > > > _______________________________________________ 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/
