On Thu, Jan 7, 2010 at 9:42 AM, Pasi Kärkkäinen <pasik@xxxxxx> wrote: > On Wed, Jan 06, 2010 at 09:38:00AM -0500, Mikulas Patocka wrote: >> Hi >> >> I uploaded new code for shared snapshots at >> http://people.redhat.com/mpatocka/patches/kernel/new-snapshots/devel/ >> >> Changes: >> - two queues, one for reads and one for writes, to improve read latency >> when the device is write-congested >> - limit number of reallocations in flight (VM subsystem sends all writes >> at once and without limit it creates big lags). >> - fixed one place where it didn't handle on-disk errors >> - simplified bitmap creation, removed some unneeded code >> - new macro for error reporting, as suggested by Zdenek >> - some comments added >> - DM_ prefix added to some macros >> >> Userspace for lvm 2.02.53 is at >> http://people.redhat.com/mpatocka/patches/userspace/new-snapshots/lvm-2.02.54/ >> >> Please, someone, do offensive testing with this --- i.e. apply the >> patches, try it, and try all possible lvm commands with it, try to stress >> and crash it in various ways, etc. If we wait with testing until Alasdair >> reads the code, it won't get much testing... >> > > Sorry for a stupid question, but what does "shared" mean? Support for CLVM? No all snapshots share one, common exception store I think. -- Regards. Adam -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
