On 09/22/2011 02:05 AM, Mathieu Chouquet-Stringer wrote: > > On Sep 22, 2011 1:11 AM, "David Sterba" <dave@xxxxxxxx > <mailto:dave@xxxxxxxx>> wrote: >> >> On Wed, Sep 21, 2011 at 04:18:29PM -0400, Josef Bacik wrote: >> > diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c >> > index b128fa0..66ba0a7 100644 >> > --- a/fs/btrfs/inode.c >> > +++ b/fs/btrfs/inode.c >> > @@ -782,7 +782,12 @@ static noinline int cow_file_range(struct inode > *inode, >> > struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree; >> > int ret = 0; >> > >> > - BUG_ON(btrfs_is_free_space_inode(root, inode)); >> > + if (btrfs_is_free_space_inode(root, inode)) { >> > + printk(KERN_ERR "trying to write to free space inode, " >> > + "isize=%Lu, start=%Lu, end=%Lu\n", > i_size_read(inode), >> > + start, end); >> >> please prefix printk messages with "btrfs: " > > Well this time it doesn't boot anymore... > Bug at fs/btrfs/free-space-cache.c:1327 > > I had another crash before being able to reboot... > > Is there a way to recover from that? How do I disable space cache? > Well that is from the tree logging code, so give this a whirl. It's going to dump a lot of info so make sure you capture everything before the --- cut here --- line. Thanks, Josef diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 1bcbe76..236a938 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -417,6 +417,8 @@ int load_free_space_cache(struct btrfs_fs_info *fs_info, } if (entry->type == BTRFS_FREE_SPACE_EXTENT) { + printk(KERN_ERR "adding extent [%llu-%llu]\n", + e->offset, e->bytes); spin_lock(&block_group->tree_lock); ret = link_free_space(block_group, e); spin_unlock(&block_group->tree_lock); @@ -431,6 +433,8 @@ int load_free_space_cache(struct btrfs_fs_info *fs_info, page_cache_release(page); goto free_cache; } + printk(KERN_ERR "adding bitmap [%llu-%llu]\n", + e->offset, e->bytes); spin_lock(&block_group->tree_lock); ret = link_free_space(block_group, e); block_group->total_bitmaps++; -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
