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btrfs: introduce raid-type to error-code table, for minimum device constraint

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Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2016-02-15 16:28:03 +01:00
parent 3cc31a0d5b
commit 621292bae6
2 changed files with 16 additions and 1 deletions
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15
fs/btrfs/volumes.c
View File

@ -118,6 +118,21 @@ const u64 btrfs_raid_group[BTRFS_NR_RAID_TYPES] = {
[BTRFS_RAID_RAID6] = BTRFS_BLOCK_GROUP_RAID6, [BTRFS_RAID_RAID6] = BTRFS_BLOCK_GROUP_RAID6,
}; };
/*
* Table to convert BTRFS_RAID_* to the error code if minimum number of devices
* condition is not met. Zero means there's no corresponding
* BTRFS_ERROR_DEV_*_NOT_MET value.
*/
const int btrfs_raid_mindev_error[BTRFS_NR_RAID_TYPES] = {
[BTRFS_RAID_RAID10] = BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET,
[BTRFS_RAID_RAID1] = BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET,
[BTRFS_RAID_DUP] = 0,
[BTRFS_RAID_RAID0] = 0,
[BTRFS_RAID_SINGLE] = 0,
[BTRFS_RAID_RAID5] = BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET,
[BTRFS_RAID_RAID6] = BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET,
};
static int init_first_rw_device(struct btrfs_trans_handle *trans, static int init_first_rw_device(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_root *root,
struct btrfs_device *device); struct btrfs_device *device);

2
fs/btrfs/volumes.h
View File

@ -340,7 +340,7 @@ struct btrfs_raid_attr {
}; };
extern const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES]; extern const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES];
extern const int btrfs_raid_mindev_error[BTRFS_NR_RAID_TYPES];
extern const u64 btrfs_raid_group[BTRFS_NR_RAID_TYPES]; extern const u64 btrfs_raid_group[BTRFS_NR_RAID_TYPES];
struct map_lookup { struct map_lookup {