kevin/linux
1
Fork 0
Code

btrfs: add raid stripe tree pretty printer

Browse Source 
Decode raid-stripe-tree entries on btrfs_print_tree().

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 2023-09-14 09:07:03 -07:00 committed by David Sterba
parent 568220fa96
commit edde81f1ab
1 changed files with 23 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
fs/btrfs/print-tree.c
View File

@ -9,6 +9,8 @@
#include "print-tree.h"
#include "accessors.h"
#include "tree-checker.h"
#include "volumes.h"
#include "raid-stripe-tree.h"
struct root_name_map {
u64 id;
@ -28,6 +30,7 @@ static const struct root_name_map root_map[] = {
{ BTRFS_FREE_SPACE_TREE_OBJECTID, "FREE_SPACE_TREE" },
{ BTRFS_BLOCK_GROUP_TREE_OBJECTID, "BLOCK_GROUP_TREE" },
{ BTRFS_DATA_RELOC_TREE_OBJECTID, "DATA_RELOC_TREE" },
{ BTRFS_RAID_STRIPE_TREE_OBJECTID, "RAID_STRIPE_TREE" },
};
const char *btrfs_root_name(const struct btrfs_key *key, char *buf)
@ -189,6 +192,22 @@ static void print_uuid_item(const struct extent_buffer *l, unsigned long offset,
}
}
static void print_raid_stripe_key(const struct extent_buffer *eb, u32 item_size,
struct btrfs_stripe_extent *stripe)
{
const int num_stripes = btrfs_num_raid_stripes(item_size);
const u8 encoding = btrfs_stripe_extent_encoding(eb, stripe);
pr_info("\t\t\tencoding: %s\n",
(encoding && encoding < BTRFS_NR_RAID_TYPES) ?
btrfs_raid_array[encoding].raid_name : "unknown");
for (int i = 0; i < num_stripes; i++)
pr_info("\t\t\tstride %d devid %llu physical %llu\n",
i, btrfs_raid_stride_devid(eb, &stripe->strides[i]),
btrfs_raid_stride_physical(eb, &stripe->strides[i]));
}
/*
* Helper to output refs and locking status of extent buffer. Useful to debug
* race condition related problems.
@ -349,6 +368,10 @@ void btrfs_print_leaf(const struct extent_buffer *l)
print_uuid_item(l, btrfs_item_ptr_offset(l, i),
btrfs_item_size(l, i));
break;
case BTRFS_RAID_STRIPE_KEY:
print_raid_stripe_key(l, btrfs_item_size(l, i),
btrfs_item_ptr(l, i, struct btrfs_stripe_extent));
break;
}
}
}