similar to: [PATCH] Btrfs: fix sync fs to actually wait for all data to be persisted

Hi! I used to have arch linux running on 1 btrfs partition (sda1, incl. /boot). When switching to 3.2.5 recently the system fails to boot: (after udevd) /etc/rc.sysinit: line 15: 117 Bus error mountpoint -q /proc and so on, no idea. It used to boot with 3.2.4, but 1) I obviously had some corruption in the tree, when I tried to delete a certain file I hit e.g. "kernel BUG at

Hi, I am using kernel 3.7-rc6. I have written a test application for extended attributes and have for some folders a wired behaviour: #include <stdio.h> #include <string.h> #include <attr/xattr.h> char attrs[1024]; ssize_t attrslen; int i; char value[1024]; ssize_t valuelen; int main(int argc, char *argv[]) { if (argc != 2) { fprintf(stderr, "Syntax: testxattr

[11558.527680] ------------[ cut here ]------------ [11558.527708] kernel BUG at fs/btrfs/transaction.c:1337! [11558.527730] invalid opcode: 0000 [#1] PREEMPT SMP [11558.527764] CPU 1 [11558.527776] Modules linked in: loop nls_cp437 vfat fat dm_mod xfs exportfs jfs usb_storage uas fuse ext4 jbd2 mbcache snd_hda_codec_hdmi snd_hda_codec_realtek arc4 iwlwifi snd_hda_intel snd_hda_codec uvcvideo

I have accidently damaged the first block(s) of a btrfs partition and can''t mount it anymore. I can see that my data is still intact by running a command like: cat /dev/sda5 | hexdump -C | more Do any (experimental) tools exist which would allow me to recover the files? Thank you -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a

A while ago someone on IRC had a directory with no entries but with a non-zero i_size. rmdir fails because i_size isn''t zero but there are no items left to remove and decrease i_size. At the time casual code inspection implied that this would be possible in unlucky error cases. I finally got around to really reading up and reproducing it. diff --git a/fs/btrfs/inode.c

When making btrfs filesystem. we firstly write root leaf to specified filed, and then we recow the root. If we don''t recow, some trees are not in the correct block group. Steps to reproduce: dd if=/dev/zero of=test.img bs=1M count=100 mkfs.btrfs -f test.img btrfs-debug-tree test.img extent tree key (EXTENT_TREE ROOT_ITEM 0) leaf 4210688 items 10 free space 3349 generation 4 owner 2

If there''s an ongoing transaction when the uuid scan kthread attempts to create one, the kthread will block, waiting for that transaction to finish while it''s keeping locks on the tree root, and in turn the existing transaction is waiting for those locks to be free. The stack trace reported by the kernel follows. [36700.671601] INFO: task btrfs-uuid:15480 blocked for more than

The inode eviction can be very slow, because during eviction we tell the VFS to truncate all of the inode''s pages. This results in calls to btrfs_invalidatepage() which in turn does calls to lock_extent_bits() and clear_extent_bit(). These calls result in too many merges and splits of extent_state structures, which consume a lot of time and cpu when the inode has many pages. In some

We''ve been keeping around the inode sequence number in hopes that somebody would use it, but nobody uses it and people actually use i_version which serves the same purpose, so use i_version where we used the incore inode''s sequence number and that way the sequence is updated properly across the board, and not just in file write. Thanks, Signed-off-by: Josef Bacik

From: Anand <anand.jain@oracle.com> This patch adds creation-time to the snapshot list display, which would help user to better manage the snapshots when number of snapshots grow substantially. This patch is developed and on top of the send/receive btrfs and btrfs-progs repo at git://github.com/ablock84/linux-btrfs.git (send-v2) git://github.com/ablock84/btrfs-progs.git (send-v2)

When adding orphans to an inode''s root, we start a transaction for that root that when ended in several places such as for example extent-tree.c:btrfs_remove_block_group(), inode.c:btrfs_unlink() and inode.c:btrfs_evict_node(), doesn''t result in a commit, that is, inode.c:btrfs_orphan_commit_root() doesn''t get called (via transaction.c:commit_fs_roots()). The respective

Hello, I have a question regarding "btrfs filesystem df"output. # btrfs fi df /mnt/test Data: total=3.01GB, used=512.19MB System, DUP: total=8.00MB, used=4.00KB System: total=4.00MB, used=0.00 <= What this means? For what is used? I''ve never seen this incremented Metadata, DUP: total=2.50GB, used=676.00KB Metadata: total=8.00MB, used=0.00

When a directory has a default ACL and a subdirectory is created under that directory, btrfs_init_acl() is called when the subdirectory''s inode is created to initialize the inode''s ACL (inherited from the parent directory) but it was clearing the ACL from the inode after setting it if posix_acl_create() returned success, instead of clearing it only if it returned an error. To

In SmallVector.h: class SmallVectorBase { *protected:* void *BeginX, *EndX, *CapacityX; *protected:* SmallVectorBase(void *FirstEl, size_t Size) : BeginX(FirstEl), EndX(FirstEl), CapacityX((char*)FirstEl+Size) {} In StringMap.h: class StringMapImpl { *protected:* // Array of NumBuckets pointers to entries, null pointers are holes. // TheTable[NumBuckets] contains a sentinel value

When the binary search returns 0 (exact match), the target key will necessarily be at slot 0 of all nodes below the current one, so in this case the binary search is not needed because it will always return 0, and we waste time doing it, holding node locks for longer than necessary, etc. Below follow histograms with the times spent on the current approach of doing a binary search when the

Hi, the $subj warning appears sometimes in syslog, in my case when xfstests/209 runs looped. The minimal reproducer is looped mkfs+mount. The message comes from disk-io.c btree_readpage_end_io_hook(): 581 if (check_tree_block_fsid(root, eb)) { 582 printk_ratelimited(KERN_INFO "btrfs bad fsid on block %llu\n", 583 (unsigned long

On 4/15/20 11:16 AM, Richard W.M. Jones wrote: > Can be used for building up lists of things, especially > lists of strings. > --- > common/include/Makefile.am | 6 +++ > common/include/test-vector.c | 90 +++++++++++++++++++++++++++++++++ > common/include/vector.h | 96 ++++++++++++++++++++++++++++++++++++ > .gitignore | 1 + > 4 files

Some people contribute to someone specific fs testing mostly, record some of them as Reviewer. Signed-off-by: Zorro Lang <zlang at kernel.org> --- If someone doesn't want to be in cc list of related fstests patch, please reply this email, I'll remove that reviewer line. Or if someone else (who contribute to fstests very much) would like to a specific reviewer, nominate yourself to

Returns a file''s size on disk. Had been posted by Chris Ball over a year ago (http://article.gmane.org/gmane.comp.file-systems.btrfs/2873). Chris Mason suggested a couple of improvements back then, which I have implemented in this version: - use u64 to return the result - replaced the loop while (1) { struct btrfs_ordered_extent *ordered;

Darrick J. Wong would like to nominate Anand Jain to help more on btrfs testing part (tests/btrfs and common/btrfs). He would like to be a co-maintainer of btrfs part, will help to review and test fstests btrfs related patches, and I might merge from him if there's big patchset. So CC him besides send to fstests@ list, when you have a btrfs fstests patch. Signed-off-by: Zorro Lang <zlang