We are using your bcache-testing branch. >From 20ad8cfb8047df2d09a5a960610f02c555a31a4f Mon Sep 17 00:00:00 2001 From: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxxx> Date: Tue, 16 Apr 2013 14:59:04 +0200 Subject: [PATCH] limit the max sectors in bcache to fix the make request bug in raid10 During test bcache with raid1+0, we saw a lot of complain as below: [ 2766.555172] md/raid0:md400: make_request bug: can't convert block across chunks or bigger than 512k 953328 144 when the using dd or fio with bigger blocksize like 512k, limited the bio_max_sectors resolve this issue. Reported-by: Michael Balser <michael.balser@xxxxxxxxxxxxxxxx> Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxxx> Tested-by: Dongsu Park <dongsu.park@xxxxxxxxxxxxxxxx> --- drivers/md/bcache/io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c index 9b63065..c5c36f7 100644 --- a/drivers/md/bcache/io.c +++ b/drivers/md/bcache/io.c @@ -181,7 +181,7 @@ static unsigned bch_bio_max_sectors(struct bio *bio) ret = min(ret, queue_max_sectors(q)); WARN_ON(!ret); - ret = max_t(int, ret, bio_iovec(bio)->bv_len >> 9); + ret = min_t(int, ret, bio_iovec(bio)->bv_len >> 9); return ret; } -- 1.7.9.5
>From 20ad8cfb8047df2d09a5a960610f02c555a31a4f Mon Sep 17 00:00:00 2001 From: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxxx> Date: Tue, 16 Apr 2013 14:59:04 +0200 Subject: [PATCH] limit the max sectors in bcache to fix the make request bug in raid10 During test bcache with raid1+0, we saw a lot of complain as below: [ 2766.555172] md/raid0:md400: make_request bug: can't convert block across chunks or bigger than 512k 953328 144 when the using dd or fio with bigger blocksize like 512k, limited the bio_max_sectors resolve this issue. Reported-by: Michael Balser <michael.balser@xxxxxxxxxxxxxxxx> Signed-off-by: Jack Wang <jinpu.wang@xxxxxxxxxxxxxxxx> Tested-by: Dongsu Park <dongsu.park@xxxxxxxxxxxxxxxx> --- drivers/md/bcache/io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c index 9b63065..c5c36f7 100644 --- a/drivers/md/bcache/io.c +++ b/drivers/md/bcache/io.c @@ -181,7 +181,7 @@ static unsigned bch_bio_max_sectors(struct bio *bio) ret = min(ret, queue_max_sectors(q)); WARN_ON(!ret); - ret = max_t(int, ret, bio_iovec(bio)->bv_len >> 9); + ret = min_t(int, ret, bio_iovec(bio)->bv_len >> 9); return ret; } -- 1.7.9.5
