Yu Kuai 460af1f9d9
md/raid1-10: limit the number of plugged bio ...
bio can be added to plug infinitely, and following writeback test can
trigger huge amount of plugged bio:
Test script:
modprobe brd rd_nr=4 rd_size=10485760
mdadm -CR /dev/md0 -l10 -n4 /dev/ram[0123] --assume-clean --bitmap=internal
echo 0 > /proc/sys/vm/dirty_background_ratio
fio -filename=/dev/md0 -ioengine=libaio -rw=write -bs=4k -numjobs=1 -iodepth=128 -name=test
Test result:
Monitor /sys/block/md0/inflight will found that inflight keep increasing
until fio finish writing, after running for about 2 minutes:
[root@fedora ~]# cat /sys/block/md0/inflight
0 4474191
Fix the problem by limiting the number of plugged bio based on the number
of copies for original bio.
Signed-off-by: Yu Kuai <yukuai3@huawei.com >
Signed-off-by: Song Liu <song@kernel.org >
Link: https://lore.kernel.org/r/20230529131106.2123367-8-yukuai1@huaweicloud.com
2023-06-13 15:25:44 -07:00
2023-04-27 11:53:57 -07:00
2023-05-04 20:23:41 +02:00
2023-04-27 11:53:57 -07:00
2023-06-05 10:55:20 -06:00
2023-06-13 09:45:40 -06:00
2023-04-23 22:07:27 -07:00
2023-04-27 16:36:55 -07:00
2023-06-12 08:04:05 -06:00
2023-04-27 16:21:32 -07:00
2023-05-24 08:42:16 -06:00
2023-05-07 10:31:45 -07:00
2023-04-29 10:24:30 -07:00
2023-05-02 10:41:31 -07:00
2023-04-27 11:53:57 -07:00
2023-04-29 13:04:50 -07:00
2023-05-07 10:57:14 -07:00
2023-05-13 00:20:06 -07:00
2023-04-27 19:57:00 -07:00
2023-04-27 11:53:57 -07:00
2023-05-03 11:11:56 -07:00
2023-04-27 19:42:02 -07:00
2023-04-27 11:53:57 -07:00
2023-05-11 09:06:49 +09:00
2023-05-12 05:32:36 +10:00
2023-04-27 12:07:50 -07:00
2023-05-03 11:00:27 -07:00
2023-05-12 06:46:34 +10:00
2023-04-27 11:53:57 -07:00
2023-04-27 10:09:05 -07:00
2023-04-27 17:17:12 -07:00
2023-05-08 11:36:19 +02:00
2023-05-03 17:27:29 +02:00
2023-04-30 23:50:26 +02:00
2023-04-27 19:37:36 +02:00
2023-04-27 12:07:50 -07:00
2023-04-29 17:21:24 -07:00
2023-05-01 17:18:56 -07:00
2023-04-27 16:36:55 -07:00
2023-04-30 13:00:38 -07:00
2023-04-27 19:42:02 -07:00
2023-05-05 19:12:01 -07:00
2023-05-02 10:36:02 -07:00
2023-04-28 16:24:32 -07:00
2023-05-07 10:17:33 -07:00
2023-04-20 14:24:01 +02:00
2023-06-13 15:25:44 -07:00
2023-05-08 09:10:07 -07:00
2023-04-25 12:02:16 -07:00
2023-04-28 14:02:54 -07:00
2023-05-02 10:41:31 -07:00
2023-04-28 14:02:54 -07:00
2023-06-12 08:04:05 -06:00
2023-06-12 08:04:05 -06:00
2023-05-10 12:11:18 +01:00
2023-04-24 18:12:42 -07:00
2023-06-12 08:04:05 -06:00
2023-04-27 16:36:55 -07:00
2023-05-05 13:27:59 -07:00
2023-04-27 10:09:05 -07:00
2023-05-03 17:43:26 +02:00
2023-04-30 11:51:51 -07:00
2023-04-29 13:04:50 -07:00
2023-05-05 11:57:29 -07:00
2023-05-02 15:40:41 -07:00
2023-05-09 11:54:35 +02:00
2023-04-29 17:37:02 -07:00
2023-04-27 11:53:57 -07:00
2023-05-03 11:25:01 -07:00
2023-04-27 19:57:00 -07:00
2023-04-27 16:36:55 -07:00
2023-04-27 19:57:00 -07:00
2023-04-29 17:29:39 -07:00
2023-04-27 11:53:57 -07:00
2023-05-02 10:41:31 -07:00
2023-06-12 08:04:05 -06:00
2023-04-27 11:53:57 -07:00
2023-06-12 08:04:05 -06:00
2023-04-27 16:36:55 -07:00
2023-04-27 12:07:50 -07:00
2023-04-20 14:16:39 +02:00
2023-04-27 16:36:55 -07:00
2023-06-12 08:04:05 -06:00
2023-04-27 11:53:57 -07:00
2023-05-04 20:30:18 +02:00
2023-05-24 08:42:16 -06:00
2023-05-08 07:15:05 -04:00
2023-04-27 12:07:50 -07:00
2023-04-27 17:05:34 -07:00
2023-05-02 11:56:43 -07:00
2023-04-28 14:53:30 -07:00
2023-05-12 11:50:33 +02:00
2023-04-27 10:09:05 -07:00
2023-04-27 19:42:02 -07:00
2023-04-27 12:07:50 -07:00
2023-05-04 18:33:56 -07:00
2023-04-27 17:27:06 -07:00
460af1f9d9