On 12/18/2013 09:04 AM, Thomas Knauth wrote: > Hello list, > > I am the author of the following paper > > https://www.usenix.org/conference/lisa13/technical-sessions/papers/knauth > > just presented at LISA 2013. Folks at the conference expressed > interested in seeing this merged into the official Linux kernel. I > would like to gauge your opinion of whether this has a chance to > actually be accepted. > Well, you just implemented an asynchronous mirror with discrete tools. Congratulations. Using bitmaps for tracking modified blocks has been a standard technique in RAID1 for ages. (look for mdadm --write-behind and drivers/md/bitmap.c. It's not actually _new_ ...) Sorry for being sarcastic. But nevertheless, your tool might actually be useful; tracking block changes could have some benefit on other areas. What you should be doing: - Rename the thing (dm-linear is taken; maybe dm-bitmap ?) - Use debugfs instead of /proc - Proper formatting And then send the code for review. Or go for the full monty and break up dm-mirror to include your bitmap code. But then you would need to come up with a way of storing your bitmap on disk. Which is where the _real_ fun starts. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg) -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
