Hi Zdenek,
lvm2 is using upstream community BZ located here:
https://bugzilla.redhat.com/enter_bug.cgi?product=LVM%20and%20device-mapper
You can check RHBZ easily for all lvm2 bZ
(mixes RHEL/Fedora/Upstream)
We usually want to have upstream BZ being linked with Community BZ,
but sometimes it's driven through other channel - not ideal - but
still easily search-able.
Yes, it's a place where problems are discussed. Thanks for your reminder :)
[...snip...]
It's should be opposite case - unless something regressed recently...
Easiest is to write out lvm2 test suite some test.
And eventually bisect which commit broke it...
Good to know! I will find time to test different versions on both
openSUSE and Fedora.
- pvmove is slow. I know it's not fault of LVM. The time is almost
spent in DM (the IO dispatch/copy).
Yeah - this is more or less design issue inside kernel - there are
some workarounds - but since primary motivation was not to overload
system - it's been left a sleep a bit - since focus gained 'raid' target
Aha, it's a good reason. Ideally, it would be good for pvmove having
some option to control
the IO rate. I know it's not easy...
and these pvmove fixes are working with old dm mirror target...
(i.e. try to use bigger region_size for mirror in lvm.conf (over 512K)
and evaluate performance - there is something wrong - but core mirror
developer is busy with raid features ATM....
Thanks for the suggestion.
- snapshot cannot be used in cluster environment. There is a usecase:
user has a central backup system
Well, snapshot CANNOT work in cluster.
What you can do is to split snapshot and attach it different volume,
but exclusive assess is simply required - there is no synchronization
of changes like with cmirrord for old mirror....
Got it! Advanced features like snapshot/thinp/dmcache, have their own
metadata. The payment for having those metadata
changes cluster-aware is painful.
We do our best....
Like you guys have been always doing, thanks!
Regards,
Eric
_______________________________________________
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/
