search for: mirror_num

...h was called too early - ioctls added to provide new functions to user mode - bugfixes for cases where search_slot found the very end of a leaf - bugfix: use right fs root for readpage instead of fs_root->fs_info - based on current cmason/for-linus Changelog v3->v4: - fixed a regression with mirror_num that could prevent error correction - based on current cmason/for-linus Please try it and report errors (or confirm there are none, of course). I can provide a place to pull from if anyone likes. -Jan Jan Schmidt (8): btrfs: added helper functions to iterate backrefs btrfs scrub: added unver...

...ff811b6bcd>] bio_endio+0x3d/0x90 > [<ffffffff81249873>] req_bio_endio+0xa3/0xe0 Ugh.... In fs/btrfs/volumes.c static void bbio_error(struct btrfs_bio *bbio, struct bio *bio, u64 logical) { ... bio->bi_bdev = (struct block_device *) (unsigned long)bbio->mirror_num; ... } static void btrfs_end_bio(struct bio *bio, int err) { ... bio->bi_bdev = (struct block_device *) (unsigned long)bbio->mirror_num; ... } In fs/btrfs/extent_io.c static void end_bio_extent_readpage(struct bio *bio, int err) { int mirror; ... mirror...

...OMEM; - - atomic_set(&multi->error, 0); - } - read_lock(&em_tree->lock); em = lookup_extent_mapping(em_tree, logical, *length); read_unlock(&em_tree->lock); @@ -2663,27 +2649,6 @@ again: map = (struct map_lookup *)em->bdev; offset = logical - em->start; - if (mirror_num > map->num_stripes) - mirror_num = 0; - - /* if our multi bio struct is too small, back off and try again */ - if (rw & (1 << BIO_RW)) { - if (map->type & (BTRFS_BLOCK_GROUP_RAID1 | - BTRFS_BLOCK_GROUP_DUP)) { - stripes_required = map->num_stripes; - max_errors =...

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

...-- a/btrfs-map-logical.c +++ b/btrfs-map-logical.c @@ -65,8 +65,8 @@ struct extent_buffer *debug_read_block(struct btrfs_root *root, u64 bytenr, eb->dev_bytenr = multi->stripes[0].physical; fprintf(info_file, "mirror %d logical %Lu physical %Lu " - "device %s\n", mirror_num, bytenr, eb->dev_bytenr, - device->name); + "device %s\n", mirror_num, (unsigned long long)bytenr, + (unsigned long long)eb->dev_bytenr, device->name); kfree(multi); if (!copy || mirror_num == copy) diff --git a/btrfsctl.c b/btrfsctl.c index 92bdf39..896999f 1006...

...l.c @@ -65,8 +65,9 @@ struct extent_buffer *debug_read_block(struct btrfs_root *root, u64 bytenr, eb->dev_bytenr = multi->stripes[0].physical; fprintf(info_file, "mirror %d logical %Lu physical %Lu " - - "device %s\n", mirror_num, bytenr, eb->dev_bytenr, - - device->name); + "device %s\n", mirror_num, + (long long unsigned int) bytenr, + (long long unsigned int) eb->dev_bytenr, device->name); kfree(m...

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

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

This series introduces a generic readahead interface for btrfs trees. The intention is to use it to speed up scrub in a first run, but balance is another hot candidate. In general, every tree walk could be accompanied by a readahead. Deletion of large files comes to mind, where the fetching of the csums takes most of the time. Also the initial build-ups of free-space-caches and

This series introduces a generic readahead interface for btrfs trees. The intention is to use it to speed up scrub in a first run, but balance is another hot candidate. In general, every tree walk could be accompanied by a readahead. Deletion of large files comes to mind, where the fetching of the csums takes most of the time. Also the initial build-ups of free-space-caches and

..._recheck_block(struct scrub_dev *sdev, page = sblock->pagev + page_index; page->logical = logical; page->physical = bbio->stripes[mirror_index].physical; + /* for missing devices, bdev is NULL */ page->bdev = bbio->stripes[mirror_index].dev->bdev; page->mirror_num = mirror_index + 1; page->page = alloc_page(GFP_NOFS); @@ -1042,6 +1043,12 @@ static int scrub_recheck_block(struct btrfs_fs_info *fs_info, struct scrub_page *page = sblock->pagev + page_num; DECLARE_COMPLETION_ONSTACK(complete); + if (page->bdev == NULL) { + page->io_err...

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

Hi, The following series of patches implements in btrfs an ioctl to do out-of-band deduplication of file extents. To be clear, this means that the file system is mounted and running, but the dedupe is not done during file writes, but after the fact when some userspace software initiates a dedupe. The primary patch is loosely based off of one sent by Josef Bacik back in January, 2011.

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

...LOCK_GROUP_RAID56) + ret = nr_parity_stripes(map); else ret = 1; free_extent_map(em); @@ -2734,8 +2716,8 @@ again: max_errors = 1; } } - if (map->type & (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6) - && multi_ret && (rw & (1 << BIO_RW) || mirror_num > 1) && raid_map_ret) { + if (map->type & BTRFS_BLOCK_GROUP_RAID56 && multi_ret && + (rw & (1 << BIO_RW) || mirror_num > 1) && raid_map_ret) { /* RAID[56] write or recovery. Return all stripes */ stripes_required = map->num...

...--- a/fs/btrfs/extent_io.h +++ b/fs/btrfs/extent_io.h @@ -345,4 +345,10 @@ int repair_io_failure(struct btrfs_fs_info *fs_info, u64 start, int end_extent_writepage(struct page *page, int err, u64 start, u64 end); int repair_eb_io_failure(struct btrfs_root *root, struct extent_buffer *eb, int mirror_num); +#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS +noinline u64 find_lock_delalloc_range(struct inode *inode, + struct extent_io_tree *tree, + struct page *locked_page, u64 *start, + u64 *end, u64 max_bytes); +#endif #endif diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c index...

...its(val); \ } diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index f633af8..00b80b7 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -373,6 +373,24 @@ static int btree_read_extent_buffer_pages(struct btrfs_root *root, WAIT_COMPLETE, btree_get_extent, mirror_num); if (!ret) { + /* + * I think that this is bad and should be moved + * into btree_readpage_end_io_hook(), but that + * it should apply to a single block at a time. + * That may be difficult and would make the + * function name a misnomer, but mostly I hate + * the silly goto...

...io_wq_end_io(root->fs_info, comp_bio, 0); - BUG_ON(ret); + btrfs_fixable_bug_on(ret); /* * inc the count before we submit the bio so @@ -665,7 +665,7 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, ret = btrfs_map_bio(root, READ, comp_bio, mirror_num, 0); - BUG_ON(ret); + btrfs_fixable_bug_on(ret); bio_put(comp_bio); @@ -681,13 +681,13 @@ int btrfs_submit_compressed_read(struct inode *inode, struct bio *bio, bio_get(comp_bio); ret = btrfs_bio_wq_end_io(root->fs_info, comp_bio, 0); - BUG_ON(ret); + btrfs_fixable_bug_on(ret);...

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