search for: btrfs_super_info_offset

...xt2fs. + * Migrate super block to it's default position and zero 0 ~ 16k */ -static int migrate_super_block(struct btrfs_root *root, u64 sb_offset) -{ - int ret = -1; - struct extent_buffer *old_eb; - struct extent_buffer *sb_buffer; - struct btrfs_trans_handle *trans; - - BUG_ON(sb_offset != BTRFS_SUPER_INFO_OFFSET); - sb_buffer = read_tree_block(root, sb_offset, 512); - if (!sb_buffer) - goto fail; - memset_extent_buffer(sb_buffer, 0, 0, sb_buffer->len); - old_eb = root->fs_info->sb_buffer; - root->fs_info->sb_buffer = sb_buffer; - btrfs_set_super_bytenr(&root->fs_info->super_copy,...

...IUM && + errno != EBUSY) fprintf(stderr, "failed to read %s: %s\n", fullpath, strerror(errno)); continue; } + close(fd); + + fd = open(fullpath, O_RDONLY); ret = btrfs_scan_one_device(fd, fullpath, &tmp_devices, &num_devices, BTRFS_SUPER_INFO_OFFSET); + close(fd); + if (ret == 0 && run_ioctl > 0) { btrfs_register_one_device(fullpath); } - close(fd); } if (!list_empty(&pending_list)) { free(pending); @@ -1442,19 +1449,29 @@ scan_again: continue; } - fd = open(fullpath, O_RDONLY); + /* This will fail...

...sr0 I''m using btrfs-progs-unstable version 4f89b6eb0718ade63152791db32794da78fbba70. Am I doing something wrong or misinterpreting how btrfsctl works? I notice that "-a" does a: ret = btrfs_scan_one_device(fd, fullpath, &tmp_devices, &num_devices, BTRFS_SUPER_INFO_OFFSET); Whereas "-A" does a: fd = open("/dev/btrfs-control", O_RDWR); if (fd < 0) { perror("failed to open /dev/btrfs-control"); exit(1); } Followed by a: ret = ioctl(fd, BTRFS_IOC_SCAN_DEV, &args); Should "-a" be taught t...

...f (stderr, "failed to open %s: %s\n", + path, strerror (errno)); + } else { + + ret = btrfs_scan_one_device (fd, path, &fs_devices, + &dev_count, + BTRFS_SUPER_INFO_OFFSET); + + close (fd); + } + + return ret; +} + int main(int ac, char **av) { char *fname = NULL; @@ -201,12 +227,16 @@ int main(int ac, char **av) fname = av[ac - 1]; if (command == BTRFS_IOC_SCAN_DEV) { - fd = open("/dev/btrfs-control", O_RDWR); - if...

...OMEM; - exclude_super_stripes(extent_root, block_group); - spin_lock(&block_group->space_info->lock); - block_group->space_info->bytes_super += block_group->bytes_super; - spin_unlock(&block_group->space_info->lock); - last = max_t(u64, block_group->key.objectid, BTRFS_SUPER_INFO_OFFSET); /* @@ -7499,6 +7541,7 @@ int btrfs_free_block_groups(struct btrfs if (block_group->cached == BTRFS_CACHE_STARTED) wait_block_group_cache_done(block_group); + free_excluded_extents(info->extent_root, block_group); btrfs_remove_free_space_cache(block_group); btrfs_put_bloc...

Here are 3 patches to avoid undesired aborts of mkfs.btrfs. These are based on top of Chris''s btrfs-progs.git: git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-progs.git Thanks, H.Seto Hidetoshi Seto (3): btrfs-progs: error if device for mkfs is too small btrfs-progs: error if device have no space to make primary chunks btrfs-progs: calculate available

...cklist && !test_device(fullpath)){ + continue; + } + fd = open(fullpath, O_RDONLY); + if (fd < 0) { + fprintf(stderr, "failed to read %s\n", fullpath); + continue; + } + ret = btrfs_scan_one_device(fd, fullpath, &tmp_devices, + &num_devices, + BTRFS_SUPER_INFO_OFFSET); + if (ret == 0 && run_ioctl > 0) { + btrfs_register_one_device(fullpath); + } + close(fd); + } + + fclose(proc_partitions); + return 0; +} + +int btrfs_scan_one_dir_checklist(char *dirname, int run_ioctl, int checklist) { DIR *dirp = NULL; struct dirent *dirent; @@ -848,6 +10...

...ons(-) diff --git a/extlinux/btrfs.h b/extlinux/btrfs.h index 39a861a..be0c24e 100644 --- a/extlinux/btrfs.h +++ b/extlinux/btrfs.h @@ -1,6 +1,9 @@ #ifndef _BTRFS_H_ #define _BTRFS_H_ +#include <asm/types.h> +#include <linux/ioctl.h> + #define BTRFS_SUPER_MAGIC 0x9123683E #define BTRFS_SUPER_INFO_OFFSET (64 * 1024) #define BTRFS_SUPER_INFO_SIZE 4096 @@ -8,6 +11,40 @@ #define BTRFS_CSUM_SIZE 32 #define BTRFS_FSID_SIZE 16 +typedef __u64 u64; +typedef __u32 u32; +typedef __u16 u16; +typedef __u8 u8; +typedef u64 __le64; +typedef u16 __le16; + +#define BTRFS_ROOT_BACKREF_KEY 144 +#define BTRFS_R...

...ct btrfs_block_group_cache *cache) +{ + struct btrfs_path *path; + struct extent_buffer *leaf; + struct btrfs_key key; + u64 last; + int ret = 0; + + path = btrfs_alloc_path(); + if (!path) + return -ENOMEM; + + root = root->fs_info->extent_root; + + last = max_t(u64, cache->key.objectid, BTRFS_SUPER_INFO_OFFSET); + + key.objectid = last; + key.offset = 0; + key.type = BTRFS_EXTENT_ITEM_KEY; + + ret = btrfs_search_slot(NULL, root, &key, path, 0, 0); + if (ret < 0) + return ret; + while (1) { + if (path->slots[0] >= btrfs_header_nritems(path->nodes[0])) { + ret = btrfs_next_leaf(root, pa...

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

...ref(struct btrfs_trans_handle *trans, struct btrfs_root *root, diff --git a/extent-tree.c b/extent-tree.c index 85f5670..eede633 100644 --- a/extent-tree.c +++ b/extent-tree.c @@ -115,7 +115,8 @@ static int cache_block_group(struct btrfs_root *root, last = max_t(u64, block_group->key.objectid, BTRFS_SUPER_INFO_OFFSET); key.objectid = last; key.offset = 0; - btrfs_set_key_type(&key, BTRFS_EXTENT_ITEM_KEY); + key.type = 0; + ret = btrfs_search_slot(NULL, root, &key, path, 0, 0); if (ret < 0) goto err; @@ -142,14 +143,18 @@ static int cache_block_group(struct btrfs_root *root, break; }...

...OMEM; exclude_super_stripes(extent_root, block_group); + spin_lock(&block_group->space_info->lock); + block_group->space_info->bytes_super += block_group->bytes_super; + spin_unlock(&block_group->space_info->lock); last = max_t(u64, block_group->key.objectid, BTRFS_SUPER_INFO_OFFSET); @@ -2069,7 +2073,11 @@ int btrfs_run_delayed_refs(struct btrfs_trans_handle *trans, if (root == root->fs_info->extent_root) root = root->fs_info->tree_root; + BUG_ON(IS_ERR(trans)); delayed_refs = &trans->transaction->delayed_refs; + if (!delayed_refs->num_entr...

This is the next patch series for scrub userland tools. Change log v1->v2: - commands now reachable as "btrfs scrub ..." instead of "btrfs filesystem scrub ..." - ability to scrub a single device instead of a whole file system - superfluous command line options removed - resume is now a separate command ("scrub resume") instead of "scrub start -r" -