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btrfs: tree-checker: add support for raid stripe tree

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Add a tree checker support for RAID stripe tree items, verify:

- alignment
- presence of the incompat bit
- supported encoding

Signed-off-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Johannes Thumshirn 2023-09-18 07:14:33 -07:00 committed by David Sterba
parent b5e2c2ff67
commit e0b4077fcc
1 changed files with 42 additions and 0 deletions
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42
fs/btrfs/tree-checker.c
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@ -30,6 +30,7 @@
#include "file-item.h"
#include "inode-item.h"
#include "dir-item.h"
#include "raid-stripe-tree.h"
/*
* Error message should follow the following format:
@ -1632,6 +1633,44 @@ static int check_inode_ref(struct extent_buffer *leaf,
return 0;
}
static int check_raid_stripe_extent(const struct extent_buffer *leaf,
const struct btrfs_key *key, int slot)
{
struct btrfs_stripe_extent *stripe_extent =
btrfs_item_ptr(leaf, slot, struct btrfs_stripe_extent);
if (unlikely(!IS_ALIGNED(key->objectid, leaf->fs_info->sectorsize))) {
generic_err(leaf, slot,
"invalid key objectid for raid stripe extent, have %llu expect aligned to %u",
key->objectid, leaf->fs_info->sectorsize);
return -EUCLEAN;
}
if (unlikely(!btrfs_fs_incompat(leaf->fs_info, RAID_STRIPE_TREE))) {
generic_err(leaf, slot,
"RAID_STRIPE_EXTENT present but RAID_STRIPE_TREE incompat bit unset");
return -EUCLEAN;
}
switch (btrfs_stripe_extent_encoding(leaf, stripe_extent)) {
case BTRFS_STRIPE_RAID0:
case BTRFS_STRIPE_RAID1:
case BTRFS_STRIPE_DUP:
case BTRFS_STRIPE_RAID10:
case BTRFS_STRIPE_RAID5:
case BTRFS_STRIPE_RAID6:
case BTRFS_STRIPE_RAID1C3:
case BTRFS_STRIPE_RAID1C4:
break;
default:
generic_err(leaf, slot, "invalid raid stripe encoding %u",
btrfs_stripe_extent_encoding(leaf, stripe_extent));
return -EUCLEAN;
}
return 0;
}
/*
* Common point to switch the item-specific validation.
*/
@ -1686,6 +1725,9 @@ static enum btrfs_tree_block_status check_leaf_item(struct extent_buffer *leaf,
case BTRFS_EXTENT_DATA_REF_KEY:
ret = check_extent_data_ref(leaf, key, slot);
break;
case BTRFS_RAID_STRIPE_KEY:
ret = check_raid_stripe_extent(leaf, key, slot);
break;
}
if (ret)