From df1b620a3e13b682f624c2cbf73e88d825d6d386 Mon Sep 17 00:00:00 2001 From: Logan Gunthorpe Date: Thu, 16 Jun 2022 13:19:44 -0600 Subject: [PATCH] md/raid5: Improve debug prints Add a debug print for raid5_make_request() so that each request is printed and add the logical sector number to the debug print in __add_stripe_bio(). Signed-off-by: Logan Gunthorpe Signed-off-by: Song Liu Signed-off-by: Jens Axboe --- drivers/md/raid5.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c index c81a1a635ff7..651a84bf1a13 100644 --- a/drivers/md/raid5.c +++ b/drivers/md/raid5.c @@ -3521,8 +3521,9 @@ static void __add_stripe_bio(struct stripe_head *sh, struct bio *bi, sh->overwrite_disks++; } - pr_debug("added bi b#%llu to stripe s#%llu, disk %d.\n", - (*bip)->bi_iter.bi_sector, sh->sector, dd_idx); + pr_debug("added bi b#%llu to stripe s#%llu, disk %d, logical %llu\n", + (*bip)->bi_iter.bi_sector, sh->sector, dd_idx, + sh->dev[dd_idx].sector); if (conf->mddev->bitmap && firstwrite) { /* Cannot hold spinlock over bitmap_startwrite, @@ -6094,6 +6095,9 @@ static bool raid5_make_request(struct mddev *mddev, struct bio * bi) DIV_ROUND_UP_SECTOR_T(ctx.last_sector - logical_sector, RAID5_STRIPE_SECTORS(conf))); + pr_debug("raid456: %s, logical %llu to %llu\n", __func__, + bi->bi_iter.bi_sector, ctx.last_sector); + /* Bail out if conflicts with reshape and REQ_NOWAIT is set */ if ((bi->bi_opf & REQ_NOWAIT) && (conf->reshape_progress != MaxSector) && -- 2.20.1