similar to: Fwd: [RFC] Improved versioned pointer algorithms

Greetings, filesystem algorithm fans. The recent, detailed description of the versioned pointer method for volume versioning is here: http://linux.derkeiler.com/Mailing-Lists/Kernel/2008-07/msg02663.html I apologize humbly for the typo in the first sentence. Today''s revision of the proof of concept code is cleaned up to remove some redundant logic from the exception delete and

I booted the guest in which i was testing btrfs (transient ENOSPC issues, etc). It booted in emergency mode. [ 6.705187] device label testfs1 devid 1 transid 4141 /dev/sdb1 [ 6.724353] device label fedora devid 1 transid 2036 /dev/sda2 [ 6.780931] device label fedora devid 1 transid 2036 /dev/sda2 [ 6.817157] snd_hda_intel 0000:00:04.0: irq 42 for MSI/MSI-X [ 6.818326]

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I mentioned a ghost file. Here is the dump (less than 65M): http://dev.mccme.ru/~raskin/btrfs.dump ghost file is: 885dj1l4788pymp3bk2f3dz52ggcvw4v-empty/garbage-1/mwave.h.tmp-31838-1822528541 It has a name, but stat fails (so no inode, I guess). Also I can create another file with the same name in the directory. I cannot remove the file, or

Add a mount option user_subvol_rm_allowed that allows users to delete a (potentially non-empty!) subvol when they would otherwise we allowed to do an rmdir(2). We duplicate the may_delete() checks from the core VFS code to implement identical security checks (minus the directory size check). Signed-off-by: Sage Weil <sage@newdream.net> --- fs/btrfs/ctree.h | 1 + fs/btrfs/ioctl.c |

Hello everyone, I've just tagged and released Btrfs v0.9. Special thanks to Yan Zheng and Josef Bacik for their work. This release includes a number of disk format changes from v0.8 and also a small change from recent btrfs-unstable HG trees. So, if you have existing Btrfs filesystems, you will need to backup, reformat and restore to try out v0.9. You can find download links and other

Hello everyone, I've just tagged and released Btrfs v0.9. Special thanks to Yan Zheng and Josef Bacik for their work. This release includes a number of disk format changes from v0.8 and also a small change from recent btrfs-unstable HG trees. So, if you have existing Btrfs filesystems, you will need to backup, reformat and restore to try out v0.9. You can find download links and other

Hi btrfs-team/-users, I do observe a strange behavior upon booting of my openSUSE 12.1 system ( kernel 3.1.10-1.9-desktop; x86_64 ) with btrfsprogs-0.19-43.7.1.x86_64 utils installed: The system has two btrfs-vols: root(sda7) & home(sda8) and had been created during system setup of openSUSE 12.1: # btrfs filesystem show Label: none uuid: a288fcff-28c8-4764-8efe-1e0cb205d588

Because orphan cleanup now happens well after the fs is all initialized and such, we can run into this problem where we find orphan entries that were just added to the fs, not ones that were added previously during a crash. This does not bode well for the system, and results in a couple of odd things happening, like truncate being run on non-regular files. In order to fix this we just check and

Currently orphan cleanup only ever gets triggered if we cross subvolumes during a lookup, which means that if we just mount a plain jane fs that has orphans in it, they will never get cleaned up. This results in panic''s like these http://www.kerneloops.org/oops.php?number=1109085 where adding an orphan entry results in -EEXIST being returned and we panic. In order to fix this, we

In fixing how we deal with bad inodes, we had a regression in the orphan cleanup code, since it expects to get a bad inode back. So fix it to deal with getting -ESTALE back by deleting the orphan item manually and moving on. Thanks, Reported-by: Simon Kirby <sim@hostway.ca> Signed-off-by: Josef Bacik <josef@redhat.com> --- fs/btrfs/inode.c | 36

I noticed while running xfstests 83 that if we didn''t have enough space to delete our inode the orphan cleanup would just loop. This is because it keeps finding the same orphan item and keeps trying to kill it but can''t because we don''t get an error back from iput for deleting the inode. So keep track of the last guy we tried to kill, if it''s the same as the

This depends on the change to ordered data search. Signed-off-by: jim owens <owens6336@gmail.com> --- fs/btrfs/dio.c | 150 +++++++++++++++++++++++++++++++++++++++----------------- 1 files changed, 104 insertions(+), 46 deletions(-) diff --git a/fs/btrfs/dio.c b/fs/btrfs/dio.c index b6934be..c930ff5 100644 --- a/fs/btrfs/dio.c +++ b/fs/btrfs/dio.c @@ -435,14 +435,81 @@ static void

We''ve been seeing warnings coming out of the orphan commit stuff forever from ceph. Turns out it''s because we''re racing with checking if the orphan block reserve is set, because we clear it outside of the spin_lock. So leave the normal fastpath checks where they are, but take the spin_lock and _recheck_ to make sure we haven''t had an orphan block rsv added in

We do log replay in a single transaction, so it''s not good to do unbound operations during replaying log. This patch makes orphan inodes cleanup executed after replaying log. It also avoid doing other unbound operations such as truncating a file during replaying log. These unbound operations are postponed to the orphan inode cleanup stage. Signed-off-by: Yan Zheng

This fixes bugzilla 57491. If we take a snapshot of a fs with a unlink ongoing and then try to send that root we will run into problems. When comparing with a parent root we will search the parents and the send roots commit_root, which if we''ve just created the snapshot will include the file that needs to be evicted by the orphan cleanup. So when we find a changed extent we will try

Hello, I want to throw this out here now that I''ve got most of the heavy lifting done for this code to make sure what I''m doing is ok for now. I''ve added an ORPHAN_DIR item key to have a hidden dir per root. Right now it just does it for whatever the default root is on mount, but I''m going to fix that to do the orphan dir check/creation on lookup of a

Hello everyone, Btrfs v0.13 is now available for download from: http://oss.oracle.com/projects/btrfs/ We took another short break from the multi-device code to make the minor mods required to compile on 2.6.25, fix some problematic bugs and do more tuning. v0.13 has no disk format changes since v0.12. The most important fix is for file data checksumming errors. These might show up on .o

As far as I know, btrfs comes from "btree file system", but why does btrfs pronounce "butter-eff-ess"? -- Wang Shaoyan -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html

The original truncation of btrfs has a bug, that is the orphan item will not be dropped when the truncation fails. This bug will trigger BUG() when unlink that truncated file. And besides that, if the user does pre-allocation for the file which is truncated unsuccessfully, after re-mount(umount-mount, not -o remount), the pre-allocated extent will be dropped. This patch modified the relative

Hello all, I recently had a power failure and can no longer mount my /home directory. The harddrive has two BTRFS partitions: sda7(/) and sda8(/home). The / partition loads up just fine, but /home does not. I''ve tried btrfsck as shown below and I''ve included dmesg pertaining to btrfs. This is on ArchLinux and the software versions are as follows: btrfs-progs-unstable