raid10 performs resync by reading all blocks, comparing to look for differences, and over-writing blocks that were different. The requires re-tasking a bio that was used to read, so that it can be re-used for write. So a number of fields need to be reset. The bi_bdev field was not being reset. However when using on a partition of a device, it gets changed by generic_make_request. This patch simply resets bi_bdev to the correct value. Signed-off-by: Neil Brown <neilb@xxxxxxxxxxxxxxx> ### Diffstat output ./drivers/md/raid10.c | 1 + 1 files changed, 1 insertion(+) diff ./drivers/md/raid10.c~current~ ./drivers/md/raid10.c --- ./drivers/md/raid10.c~current~ 2004-12-01 10:58:41.000000000 +1100 +++ ./drivers/md/raid10.c 2004-12-01 10:59:18.000000000 +1100 @@ -1150,6 +1150,7 @@ static void sync_request_write(mddev_t * md_sync_acct(conf->mirrors[d].rdev->bdev, tbio->bi_size >> 9); tbio->bi_sector += conf->mirrors[d].rdev->data_offset; + tbio->bi_bdev = conf->mirrors[d].rdev->bdev; generic_make_request(tbio); } - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
