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Hello, This patch series adds an initial implementation of restriper (it''s a clever name for relocation framework that allows to do selective profile changing and selective balancing with some goodies like pausing/resuming and reporting progress to the user. Profile changing is global (per-FS) so far, per-subvolume profiles require some discussion and can be implemented in future.

This series adds an initial implementation for scrub. It works quite straightforward. The usermode issues an ioctl for each device in the fs. For each device, it enumerates the allocated device chunks. For each chunk, the contained extents are enumerated and the data checksums fetched. The extents are read sequentially and the checksums verified. If an error occurs (checksum or EIO), a good copy

...;stripes[i].physical); - BUG_ON(ret); + btrfs_fixable_bug_on(ret); if (map->stripes[i].dev) { ret = btrfs_update_device(trans, map->stripes[i].dev); - BUG_ON(ret); + btrfs_fixable_bug_on(ret); } } ret = btrfs_free_chunk(trans, root, chunk_tree, chunk_objectid, chunk_offset); - BUG_ON(ret); + btrfs_fixable_bug_on(ret); if (map->type & BTRFS_BLOCK_GROUP_SYSTEM) { ret = btrfs_del_sys_chunk(root, chunk_objectid, chunk_offset); - BUG_ON(ret); + btrfs_fixable_bug_on(ret); } ret = btrfs_remove_block_group(trans, extent_root, chunk_offset); - BUG_ON(r...

...trfs/volumes.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-) diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 5cbb7f4..fb871d0 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2623,7 +2623,10 @@ static int chunk_usage_filter(struct btrfs_fs_info *fs_info, u64 chunk_offset, user_thresh = div_factor_fine(cache->key.offset, bargs->usage); - if (chunk_used < user_thresh) + pr_debug("btrfs: chunk_used %llu, user_thresh %llu\n", + (unsigned long long)chunk_used, + (unsigned long long)user_thresh); + if (chunk_used <= user_thresh)...

The goal is to detect when drives start to get an increased error rate, when drives should be replaced soon. Therefore statistic counters are added that count IO errors (read, write and flush). Additionally, the software detected errors like checksum errors and corrupted blocks are counted. An ioctl interface is added to get the device statistic counters. A second ioctl is added to atomically get

The biggest one is a fix for fstrim, and there''s a fix for on-disk free space cache. Others are small fixes and cleanups. The last three have been sent weeks ago. The patchset is also available in this repo: git://repo.or.cz/linux-btrfs-devel.git for-chris Note there''s a small confict with Al Viro''s vfs changes. Li Zefan (11): Btrfs: add pinned extents to

Changes v1-v2: - Remove restriction that BTRFS_IOC_GET_DEVICE_STATS is a privileged operation - Cast u64 to unsigned long long for printf() Changes v2-v3: - Rebased on Chris'' current master Changes v3-v4: - Add padding at end of ioctl structure Changes v4-v5: - The statistic members in the ioctl are now organized as an array of 64 bit values. Symbolic names for the array indexes

...tle(struct btrfs_trans_handle *trans, diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 8d9c42e..b3430cc 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -1743,10 +1743,18 @@ static int btrfs_relocate_chunk(struct btrfs_root *root, ret = btrfs_relocate_block_group(extent_root, chunk_offset); BUG_ON(ret); - trans = btrfs_start_transaction(root, 1); - BUG_ON(!trans); + /* + * 2 - for one dev extent plus updating the device item, we''ll have to + * extend the transaction if there are more than one stripe + * 1 - the chunk item + * 1 - the block group item + */ + trans =...

Hi, The following patches add support for ext4 and btrfs to PV-GRUB. These patches are taken nearly verbatim from those provided by Fedora and Gentoo. We''ve been using these patches for the PV-GRUB images available in EC2 for some time now with no problems. Changes from v1: - Makefile has been changed to check the exit code from patch - The btrfs patch has been rebased to apply