On Sat, Aug 5, 2017 at 8:51 AM, Shaohua Li <s...@kernel.org> wrote: > From: Shaohua Li <s...@fb.com> > > Sometime disk could have tracks broken and data there is inaccessable, > but data in other parts can be accessed in normal way. MD RAID supports > such disks. But we don't have a good way to test it, because we can't > control which part of a physical disk is bad. For a virtual disk, this > can be easily controlled. > > This patch adds a new 'badblock' attribute. Configure it in this way: > echo "+1-100" > xxx/badblock, this will make sector [1-100] as bad > blocks. > echo "-20-30" > xxx/badblock, this will make sector [20-30] good
Did you happen to overlook block/badblocks.c, or did you find it unsuitable?