On Mon, Nov 17, 2008 at 08:58:34PM -0500, Lee Trager wrote:
> I still get a kernel panic with both of your patches installed. When I
> checked with df the file system is about 65% full. But even if it was
> full it shouldn't cause a kernel panic.
>
> Lee
>
Hrm this is frustrating, I can't figure out whats going wrong and I can't
reproduce this here, I just keep hitting a reall ENOSPC. Please run with this
patch and send me the output. Thanks much,
Josef
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 6eb56a0..a24e368 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2898,6 +2898,18 @@ static int noinline find_free_extent(struct btrfs_trans_handle *trans,
break;
}
new_group:
+ if (loop == 2) {
+ spin_lock(&block_group->lock);
+ printk(KERN_ERR "block_group %Lu didn't have what we "
+ "needed. %Lu total, %Lu used, %Lu pinned, %Lu "
+ "reserved. Dumping free space\n",
+ block_group->key.objectid,
+ block_group->key.offset,
+ btrfs_block_group_used(&block_group->item),
+ block_group->pinned, block_group->reserved);
+ spin_unlock(&block_group->lock);
+ btrfs_dump_free_space(block_group, 0);
+ }
mutex_unlock(&block_group->alloc_mutex);
new_group_no_lock:
/* don't try to compare new allocations against the
diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index f4926c0..3699656 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -402,8 +402,8 @@ void btrfs_dump_free_space(struct btrfs_block_group_cache *block_group,
info = rb_entry(n, struct btrfs_free_space, offset_index);
if (info->bytes >= bytes)
count++;
- //printk(KERN_INFO "offset=%Lu, bytes=%Lu\n", info->offset,
- // info->bytes);
+ printk(KERN_INFO "offset=%Lu, bytes=%Lu\n", info->offset,
+ info->bytes);
}
printk(KERN_INFO "%d blocks of free space at or bigger than bytes is"
"\n", count);
--
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