search for: btrfs_write_dirty_block_groups

...cache->cache_node); + btrfs_put_block_group(cache); + if (node) { + cache = rb_entry(node, struct btrfs_block_group_cache, + cache_node); + atomic_inc(&cache->count); + } else + cache = NULL; + spin_unlock(&root->fs_info->block_group_cache_lock); + return cache; +} + int btrfs_write_dirty_block_groups(struct btrfs_trans_handle *trans, struct btrfs_root *root) { - struct btrfs_block_group_cache *cache, *entry; - struct rb_node *n; + struct btrfs_block_group_cache *cache; int err = 0; - int werr = 0; struct btrfs_path *path; u64 last = 0; @@ -2414,39 +2430,35 @@ int btrfs_write_di...

...btrfs] Apr 29 12:59:31 ewzw032 kernel: [ 6275.016559] [<ffffffff81096c40>] ? set_next_entity+0x80/0x90 Apr 29 12:59:31 ewzw032 kernel: [ 6275.016570] [<ffffffffa0107fa5>] btrfs_write_out_cache+0x95/0xf0 [btrfs] Apr 29 12:59:31 ewzw032 kernel: [ 6275.016579] [<ffffffffa00bcc07>] btrfs_write_dirty_block_groups+0x527/0x620 [btrfs] Apr 29 12:59:31 ewzw032 kernel: [ 6275.016588] [<ffffffffa012ed52>] commit_cowonly_roots+0x15a/0x22c [btrfs] Apr 29 12:59:31 ewzw032 kernel: [ 6275.016598] [<ffffffffa00cc4ec>] btrfs_commit_transaction+0x62c/0xb00 [btrfs] Apr 29 12:59:31 ewzw032 kernel: [ 6275.0166...

...rfs] [36700.671698] [<ffffffffa05e3e54>] __btrfs_write_out_cache+0x8c4/0xa80 [btrfs] [36700.671704] [<ffffffffa05e4362>] btrfs_write_out_cache+0xb2/0xf0 [btrfs] [36700.671710] [<ffffffffa05c4441>] ? free_extent_buffer+0x61/0xc0 [btrfs] [36700.671716] [<ffffffffa0594c82>] btrfs_write_dirty_block_groups+0x562/0x650 [btrfs] [36700.671723] [<ffffffffa0610092>] commit_cowonly_roots+0x171/0x24b [btrfs] [36700.671729] [<ffffffffa05a4dde>] btrfs_commit_transaction+0x4fe/0xa10 [btrfs] [36700.671735] [<ffffffffa0610af3>] create_subvol+0x5c0/0x636 [btrfs] [36700.671742] [<ffffffffa...

...s] [ 469.037942] [<ffffffffa05573ce>] ? run_clustered_refs+0x1be/0xb50 [btrfs] [ 469.037972] [<ffffffffa05a5278>] ? btrfs_find_ref_cluster+0x68/0x170 [btrfs] [ 469.037999] [<ffffffffa059f6e1>] btrfs_write_out_cache+0xb1/0xf0 [btrfs] [ 469.038021] [<ffffffffa055854f>] btrfs_write_dirty_block_groups+0x50f/0x5e0 [btrfs] [ 469.038043] [<ffffffffa0557f01>] ? btrfs_run_delayed_refs+0x1a1/0x2e0 [btrfs] [ 469.038072] [<ffffffffa05c2dd0>] commit_cowonly_roots+0x121/0x1eb [btrfs] [ 469.038099] [<ffffffffa0569aad>] btrfs_commit_transaction+0x59d/0xac0 [btrfs] [ 469.038105] [&l...

.../0x950 [btrfs] Aug 4 02:26:06 rohan kernel: [ 3878.951105] [<ffffffff816606be>] ? _raw_spin_lock+0xe/0x20 Aug 4 02:26:06 rohan kernel: [ 3878.951105] [<ffffffffa053b069>] btrfs_write_out_cache+0xb9/0xf0 [btrfs] Aug 4 02:26:06 rohan kernel: [ 3878.951105] [<ffffffffa04f4424>] btrfs_write_dirty_block_groups+0x224/0x280 [btrfs] Aug 4 02:26:06 rohan kernel: [ 3878.951105] [<ffffffffa0502b62>] update_cowonly_root+0x42/0xd0 [btrfs] Aug 4 02:26:06 rohan kernel: [ 3878.951105] [<ffffffffa0502cac>] commit_cowonly_roots+0xbc/0x100 [btrfs] Aug 4 02:26:06 rohan kernel: [ 3878.951105] [<ffff...

...rfs] [ 153.920013] [<ffffffffa0175b25>] ? __find_space_info+0x85/0xa0 [btrfs] [ 153.920013] [<ffffffffa017f28b>] ? btrfs_run_delayed_refs+0x1cb/0x450 [btrfs] [ 153.920013] [<ffffffffa01cf8c5>] btrfs_write_out_cache+0x95/0xf0 [btrfs] [ 153.920013] [<ffffffffa017fa2f>] btrfs_write_dirty_block_groups+0x51f/0x5f0 [btrfs] [ 153.920013] [<ffffffffa01e9b2a>] commit_cowonly_roots+0xec/0x1c6 [btrfs] [ 153.920013] [<ffffffffa0190895>] btrfs_commit_transaction+0x575/0xaa0 [btrfs] [ 153.920013] [<ffffffff81073b50>] ? abort_exclusive_wait+0xb0/0xb0 [ 153.920013] [<ffffffffa01...

...[ 68.128090] [<ffffffffa0481c99>] btrfs_wait_ordered_range+0x49/0x110 [btrfs] [ 68.128135] [<ffffffffa04a64c0>] __btrfs_write_out_cache+0x6d0/0x8f0 [btrfs] [ 68.128180] [<ffffffffa04a774d>] btrfs_write_out_cache+0x8d/0xe0 [btrfs] [ 68.128224] [<ffffffffa0459983>] btrfs_write_dirty_block_groups+0x533/0x620 [btrfs] [ 68.128271] [<ffffffffa04676e2>] commit_cowonly_roots+0x172/0x260 [btrfs] [ 68.128314] [<ffffffffa04695ad>] btrfs_commit_transaction+0x5bd/0xaf0 [btrfs] [ 68.128353] [<ffffffff8107b460>] ? wake_up_bit+0x30/0x30 [ 68.128391] [<ffffffffa04a4edd&gt...

I noticed a huge problem with the free space cache that was presenting as an early ENOSPC. Turns out when writing the free space cache out I forgot to take into account pinned extents and more importantly clusters. This would result in us leaking free space everytime we unmounted the filesystem and remounted it. I fix this by making sure to check and see if the current block group has a cluster

...0x40/0x70 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854240]  [<ffffffff813458b1>] > ? > >>>> btrfs_truncate_free_space_cache+0x81/0xe0 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854261]  [<ffffffff812fce15>] > ? > >>>> btrfs_write_dirty_block_groups+0x245/0x500 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854283]  [<ffffffff812fcb6a>] > ? > >>>> btrfs_run_delayed_refs+0x1ba/0x220 > >>>> Feb 14 00:39:20 lupus kernel: [ 2951.854304]  [<ffffffff8130afff>] > ? > >>>> comm...

I was using my computer normally when suddenly my btrfs volume became read-only. This is on Chris'' for-linus branch (latest commit cb77fcd88) Here''s the relevant excerpt from dmesg [ 50.877500] r8169 0000:01:00.0: eth1: link up [ 50.880296] ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready [ 60.959215] eth1: no IPv6 routers present [ 1904.463247] atkbd serio0: Unknown key

...586,11 @@ static int update_cowonly_root(struct btrfs_trans_handle *trans, ret = btrfs_update_root(trans, tree_root, &root->root_key, &root->root_item); - BUG_ON(ret); + btrfs_fixable_bug_on(ret); old_root_used = btrfs_root_used(&root->root_item); ret = btrfs_write_dirty_block_groups(trans, root); - BUG_ON(ret); + btrfs_fixable_bug_on(ret); } if (root != root->fs_info->extent_root) @@ -611,7 +611,7 @@ static noinline int commit_cowonly_roots(struct btrfs_trans_handle *trans, int ret; ret = btrfs_run_delayed_refs(trans, root, (unsigned long)-1); - BUG_ON(ret)...

This is a first draft of a subvolume quota implementation. It is possible to limit subvolumes and any group of subvolumes and also to track the amount of space that will get freed when deleting snapshots. The current version is functionally incomplete, with the main missing feature being the initial scan and rescan of an existing filesystem. I put some effort into writing an introduction into

Hi all - Here''s my current error handling patchset, against 3.1-rc8. Almost all of this patchset is preparing for actual error handling. Before we start in on that work, I''m trying to reduce the surface we need to worry about. It turns out that there is a ton of code that returns an error code but never actually reports an error. The patchset has grown to 65 patches. 46 of them