On Tue, 29 Oct 2019 14:21:49 +0800 Qu Wenruo <wqu@xxxxxxxx> wrote: > Here we introduce a new rescue= mount option to completely skip data > csum check. > Since data csum check is completely skipped, for profiles with extra > mirrors/copies, it will return the first copy only, which is not > optimized, but should be good enough for rescue usage. > > This option only affects data csum verification, doesn't affect data > csum calcuation, so new data write will still be protected by csum (if > it doesn't get affected by csum tree corruption). Maybe just make the "nodatasum" mount option skip verification of existing checksums as well? Actually before seeing this patch I believed "nodatasum" already does that. Also for consistency note that datasum/nodatasum call it just "sum" in the mount option name, not "csum". -- With respect, Roman
