search for: btrfs_csum_size

...int array defined in ctree.h, and a static inline function (btrfs_super_csum_size) using this array, the obvious problem is every c file using that function would have a local copy of that int array, multiple c files calling would result multiple copies of that array: $ nm fs/btrfs/btrfs.ko | grep btrfs_csum_sizes 0000010c r btrfs_csum_sizes 00000114 r btrfs_csum_sizes 000001c0 r btrfs_csum_sizes 000005a0 r btrfs_csum_sizes the original commit has 4 c files called this static inline function, till now there are still those 4 c files calling it, so there are 4 copies of btrfs_csum_sizes; but future code may...

...b/usr/kinit/fstype/btrfs_fs.h new file mode 100644 index 0000000..e1f933e --- /dev/null +++ b/usr/kinit/fstype/btrfs_fs.h @@ -0,0 +1,51 @@ +#ifndef __BTRFS_FS_H +#define __BTRFS_FS_H + +/* Extracted from fs/btrfs/ctree.h and shortened a bit */ + +#define BTRFS_MAGIC "_BHRfS_M" + +#define BTRFS_CSUM_SIZE 32 +#define BTRFS_FSID_SIZE 16 + +/* + * the super block basically lists the main trees of the FS + * it currently lacks any block count etc etc + */ +struct btrfs_super_block { + __u8 csum[BTRFS_CSUM_SIZE]; + /* the first 4 fields must match struct btrfs_header */ + __u8 fsid[...

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

...ux/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_ROOT_TREE_DIR_OBJECTID 6ULL +#define BTRFS_DIR_ITEM_KEY 84 + +/* + * * this is used fo...

Hello, I noticed a double definition of BTRFS_CSUM_TYPE_CRC32 in ctree.h and attach a patch that removes it. Best regards, Dirk

...an Behrens <sbehrens@giantdisaster.de> --- fs/btrfs/ctree.h | 3 +++ fs/btrfs/reada.c | 5 +++++ 2 files changed, 8 insertions(+) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index ec42a24..e6f772d 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -173,6 +173,9 @@ static int btrfs_csum_sizes[] = { 4, 0 }; #define BTRFS_FT_XATTR 8 #define BTRFS_FT_MAX 9 +/* ioprio of readahead is set to idle */ +#define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) + /* * The key defines the order in the tree, and so it also defines (optimal) * block layout. diff --git a/fs/bt...

...++---- fs/btrfs/relocation.c | 7 ++++--- fs/btrfs/super.c | 20 +++++++++++++++++++- 5 files changed, 34 insertions(+), 8 deletions(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 547b7b0..a62f20c 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -191,6 +191,9 @@ static int btrfs_csum_sizes[] = { 4, 0 }; /* ioprio of readahead is set to idle */ #define BTRFS_IOPRIO_READA (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_IDLE, 0)) +/* Default value for maximum compressed extent size (kb) */ +#define BTRFS_DEFAULT_MAX_COMPR_EXTENTS 128 + /* * The key defines the order in the tree, and so it also...

...eafsize, - 0, 0, 0, 0, 1); - if (ret) - goto fail; - ret = btrfs_commit_transaction(trans, root); - free_extent_buffer(old_eb); - BUG_ON(ret); +static int migrate_super_block(int fd, u64 old_bytenr, u32 sectorsize) +{ + int ret; + char *buf; + u64 bytenr; + u32 crc = ~(u32)0; + u32 len = 512 - BTRFS_CSUM_SIZE; + struct btrfs_super_block *super; + + ret = fsync(fd); + if (ret) + goto fail; + + BUG_ON(sectorsize < sizeof(super)); + buf = malloc(sectorsize); + if (!buf) + return -ENOMEM; + ret = pread(fd, buf, sectorsize, old_bytenr); + if (ret != sectorsize) + goto fail; + + super = (struct btrfs_su...

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

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

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

Hi gang, I was a little surprised to see that patch go by recently which fixed an endian bug. I went to see how sparse checking looked and it was.. broken. I got it going again in my Fedora environment. Most of the patches are just cleanups, but there *were* three real bugs lurking in all that sparse warning spam. So I maintain that it''s worth our time to keep it going and fix

While testing raid-auto-repair patches I''m going to send out later, I just found the very last bug in my current scrub patch series: Changelog v4->v5: - fixed a deadlock when fixup is taking longer while scrub is about to end Original message follows: ------------------------ This patch set introduces two new features for scrub. They share the backref iteration code which is the