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... Mikulas -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
