Dne 19.10.2016 v 12:53 Daniel Armbruster napsal(a):
Hi List, I'm looking for a device-mapper target driver giving me the possibility to track/log WRITE requests. The idea is to track those WRITE requests within a Bitmap e.g. 1:LV-EXTEND (for LVM2). I read already the device-mapper documentation under https://www.kernel.org/doc/Documentation/device-mapper/ but didn't find an appropriate module which would suite my needs. Is there any work happening on this to leverage? Any kind of help is appreciated. Many thanks in advance.
Hi Not exactly sure what you are trying to do but 2 things to look at: Maybe 'dmstats' with it's region logic may cover your 'wanted' operation. The kernel dm target to check would be 'era' which keeps trace of written blocks. Regards Zdenek -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
