Commit cf93e15e authored Nov 27, 2019 by David Sterba

btrfs: fix devs_max constraints for raid1c3 and raid1c4



The value 0 for devs_max means to spread the allocated chunks over all
available devices, eg. stripe for RAID0 or RAID5. This got mistakenly
copied to the RAID1C3/4 profiles. The intention is to have exactly 3 and
4 copies respectively.

Fixes: 47e6f742 ("btrfs: add support for 3-copy replication (raid1c3)")
Fixes: 8d6fac00 ("btrfs: add support for 4-copy replication (raid1c4)")
Signed-off-by: David Sterba <dsterba@suse.com>

parent 994bf9cd

fs/btrfs/volumes.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -61,7 +61,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
		[BTRFS_RAID_RAID1C3] = {
		.sub_stripes = 1,
		.dev_stripes = 1,
		.devs_max = 0,
		.devs_max = 3,
		.devs_min = 3,
		.tolerated_failures = 2,
		.devs_increment = 3,
		@@ -73,7 +73,7 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
		[BTRFS_RAID_RAID1C4] = {
		.sub_stripes = 1,
		.dev_stripes = 1,
		.devs_max = 0,
		.devs_max = 4,
		.devs_min = 4,
		.tolerated_failures = 3,
		.devs_increment = 4,

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