diff options
| author | Filipe Manana <fdmanana@suse.com> | 2023-07-26 18:57:01 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2023-08-21 15:52:17 +0300 |
| commit | e50b122b832bed9f36d459f19fd73d00658f5c1e (patch) | |
| tree | 2554e01bc96a9f82c538cb5f14d59d1ae34f5915 | |
| parent | b92e8f5472a28e311983f9f47e281e0adf56f10a (diff) | |
| download | linux-e50b122b832bed9f36d459f19fd73d00658f5c1e.tar.xz | |
btrfs: print available space for a block group when dumping a space info
When dumping a space info, we iterate over all its block groups and then
print their size and the amounts of bytes used, reserved, pinned, etc.
When debugging -ENOSPC problems it's also useful to know how much space
is available (free), so calculate that and print it as well.
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
| -rw-r--r-- | fs/btrfs/space-info.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c index ae12a8a9cd12..54d78e839c01 100644 --- a/fs/btrfs/space-info.c +++ b/fs/btrfs/space-info.c @@ -523,13 +523,18 @@ void btrfs_dump_space_info(struct btrfs_fs_info *fs_info, down_read(&info->groups_sem); again: list_for_each_entry(cache, &info->block_groups[index], list) { + u64 avail; + spin_lock(&cache->lock); + avail = cache->length - cache->used - cache->pinned - + cache->reserved - cache->delalloc_bytes - + cache->bytes_super - cache->zone_unusable; btrfs_info(fs_info, -"block group %llu has %llu bytes, %llu used %llu pinned %llu reserved %llu delalloc %llu super %llu zone_unusable %s", +"block group %llu has %llu bytes, %llu used %llu pinned %llu reserved %llu delalloc %llu super %llu zone_unusable (%llu bytes available) %s", cache->start, cache->length, cache->used, cache->pinned, cache->reserved, cache->delalloc_bytes, cache->bytes_super, cache->zone_unusable, - cache->ro ? "[readonly]" : ""); + avail, cache->ro ? "[readonly]" : ""); spin_unlock(&cache->lock); btrfs_dump_free_space(cache, bytes); } |