* [linux-lvm] How big can an LVM mirror log get? @ 2013-04-21 19:37 Ben 2013-04-25 15:26 ` Brassow Jonathan 0 siblings, 1 reply; 2+ messages in thread From: Ben @ 2013-04-21 19:37 UTC (permalink / raw) To: linux-lvm In my testing of LVM2 I have seen a mirror log up to 512KiB. Does anyone know, outside of pathlogical use cases, what the largest mirror log that would be created using the default region size? Thank you. ^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [linux-lvm] How big can an LVM mirror log get? 2013-04-21 19:37 [linux-lvm] How big can an LVM mirror log get? Ben @ 2013-04-25 15:26 ` Brassow Jonathan 0 siblings, 0 replies; 2+ messages in thread From: Brassow Jonathan @ 2013-04-25 15:26 UTC (permalink / raw) To: LVM general discussion and development LV_size / region_size = region_cnt region_cnt / 8 ~= number of bytes necessary for the log So, 100GiB LV / 512kiB region size = 200,000 regions 200000 / 8 = ~25kiB log It takes quite a bit to get the log to be large and if that happens and you don't like it, you can always increase the region size. brassow On Apr 21, 2013, at 2:37 PM, Ben wrote: > In my testing of LVM2 I have seen a mirror log up to 512KiB. Does anyone know, > outside of pathlogical use cases, what the largest mirror log that would be > created using the default region size? > > Thank you. > > _______________________________________________ > 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/ ^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2013-04-25 15:26 UTC | newest] Thread overview: 2+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2013-04-21 19:37 [linux-lvm] How big can an LVM mirror log get? Ben 2013-04-25 15:26 ` Brassow Jonathan
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