search for: btrfs_ioctl_clone

Displaying 19 results from an estimated 19 matches for "btrfs_ioctl_clone".

2012 Jan 30
[PATCH] Btrfs: allow cloning ranges within the same file
...| 23 ++++++++++++++++------- 1 files changed, 16 insertions(+), 7 deletions(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 0b06a5c..8fcd671 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -2223,8 +2223,6 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd, * decompress into destination''s address_space (the file offset * may change, so source mapping won''t do), then recompress (or * otherwise reinsert) a subrange. - * - allow ranges within the same file to be cloned (provided -...
2013 Jun 30
why check f_path.mnt is equal for source and dest in btrfs_ioctl_clone()?
This gives EXDEV for clone operations that btrfs could otherwise execute and with slight change of circumstances will actually execute fine. Imagine we have a btrfs on /dev/mapper/foobar with subvols /foo and /bar. Let’s also imagine top of said fs in mounted at /mnt. In this case, a cross-subvol clone of /mnt/foo/srcfile to /mnt/bar/dstfile will
2010 Jan 27
Re: cp --reflink with Btrfs
* Sage Weil ( [091216 17:55]: > On Wed, 16 Dec 2009, Li Dongyang wrote: > > > Have a look at line 998, ioctl.c, inside btrfs_ioctl_clone(), > > the src->i_size(the size of the testfile created by touch) is just 0, and this > > will cause btrfs_ioctl_clone just return -EINVAL. > > I''m not sure if it makes sense to clone a file which actually doesn''t have any > > data extents. > >...
2012 Feb 13
Cross-subvolume reflink copy (BTRFS_IOC_CLONE over subvolume boundaries)
It''s been nearly a year since the patches needed to implement a reflinked copy between subvolumes have been posted ( ) and I still get "Invalid cross-device link" error with Linux 3.2.4 while I try to do a cp --reflink between subvolumes. This is a *very* useful feature to have (think offline
2009 Dec 13
cp --reflink with Btrfs
I am testing a Btrfs root file system with Debian (kernel 2.6.32) under KVM. jason@vrtl:~$ touch testfile jason@vrtl:~$ cp --reflink testfile /tmp cp: failed to clone `/tmp/testfile'': Invalid argument This is with GNU Coreutils 8.0 taken from debian Sid. Is this a Coreutils issue, a Btrfs problem or something in my local configuration? All the other issues that I have
2011 Aug 09
[PATCH] Btrfs: truncate pages from clone ioctl target range
...7;btrfs/ioctl.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index a3c4751..cac9491 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -2243,6 +2243,10 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd, btrfs_wait_ordered_range(src, off, len); } + /* truncate page cache pages from target inode range */ + truncate_inode_pages_range(&inode->i_data, off, + ((off+len+PAGE_CACHE_SIZE-1)&PAGE_CACHE_MASK)-1); + /* clone data...
2010 Jun 12
[PATCH] Btrfs: fix CLONE ioctl destination file size expansion to block boundary
...ioctl.c | 16 +++++++++++++--- 1 files changed, 13 insertions(+), 3 deletions(-) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 4cdb98c..a687f28 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1578,6 +1578,7 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd, u64 disko = 0, diskl = 0; u64 datao = 0, datal = 0; u8 comp; + u64 endoff; size = btrfs_item_size_nr(leaf, slot); read_extent_buffer(leaf, buf, @@ -1712,9 +1713,18 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned l...
2013 Aug 06
[PATCH 0/4] btrfs: out-of-band (aka offline) dedupe v4
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.
2012 Jun 20
[PATCH] Allow cross subvolume reflinks (2nd attempt)
Hello, This is the second attempt to bring in cross subvolume reflinks into btrfs. The first attempt was NAKed due to missing vfs mount checks and a clear description of what btrfs subvolumes are and probably also why cross subvolume reflinks are ok in the case of btrfs. This version of the patch comes from David and is in SUSE kernels since a long time, so it is tested and working. The patch
2012 Mar 27
Create subvolume from a directory?
Hi all, Just a quick question but can''t find an obvious answer. Can I create/convert a existing (btrfs) directory into a subvolume? It would be very helpful when transferring ''partitions'' into btrfs. I found a similar question way back in google, but that site is down now generally. Thanks in advance. -- To unsubscribe from this list: send the line
2011 Jun 09
[PATCH] Btrfs: turn to readonly if btrfs_start_transaction() fails
...snap_destroy(struct file *file, trans = btrfs_start_transaction(root, 0); if (IS_ERR(trans)) { err = PTR_ERR(trans); + btrfs_abort_transaction(root, err); goto out_up_write; } trans->block_rsv = &root->fs_info->global_block_rsv; @@ -2316,6 +2321,7 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd, trans = btrfs_start_transaction(root, 1); if (IS_ERR(trans)) { ret = PTR_ERR(trans); + btrfs_abort_transaction(root, ret); goto out; } @@ -2549,6 +2555,7 @@ static long btrfs_ioctl_default_subvol(struct file *file, void __user *argp...
2010 Sep 03
[PATCH 1/2] btrfs: document where we use BUG_ON instead of error handling
..._key.objectid); - BUG_ON(ret); + btrfs_fixable_bug_on(ret); } ret = btrfs_commit_transaction(trans, root); - BUG_ON(ret); + btrfs_fixable_bug_on(ret); inode->i_flags |= S_DEAD; out_up_write: up_write(&root->fs_info->subvol_sem); @@ -1633,11 +1633,11 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd, new_key.offset, new_key.offset + datal, &hint_byte, 1); - BUG_ON(ret); + btrfs_fixable_bug_on(ret); ret = btrfs_insert_empty_item(trans, root, path, &new_key, size); - BUG_ON(ret); + btrfs_fi...
2011 Aug 15
[patch v2 0/9] btrfs: More error handling patches
Hi all - The following 9 patches add more error handling to the btrfs code: - Add btrfs_panic - Catch locking failures in {set,clear}_extent_bit - Push up set_extent_bit errors to callers - Push up lock_extent errors to callers - Push up clear_extent_bit errors to callers - Push up unlock_extent errors to callers - Make pin_down_extent return void - Push up btrfs_pin_extent errors to
2009 Nov 10
[RFC] big fat transaction ioctl
...p.args[2], + op.args[3], op.args[4]); + break; + case BTRFS_IOC_UT_OP_REMOVEXATTR: + ret = sys_removexattr((char __user *)op.args[0], + (char __user *)op.args[1]); + break; + case BTRFS_IOC_UT_OP_CLONERANGE: + ret = -EBADF; + file = fget(fd1); + if (file) { + ret = btrfs_ioctl_clone(file, fd2, + op.args[2], op.args[3], + op.args[4]); + fput(file); + } + break; + } + pr_debug(" ut %d/%d op %d args %llx %llx %llx %llx %llx = %d\n", + i, (int)ut->num_ops, (int)op.op, op.args[0], + op.args[1], op.args[2], op.args[3], op.args[4], ret); +...
2009 Nov 12
[PATCH 03/12] Btrfs: Rewrite btrfs_drop_extents
...yte, alloc_hint, mode); if (ret < 0) { free_extent_map(em); break; diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index cdbb054..a1a8db8 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -1027,8 +1027,7 @@ static noinline long btrfs_ioctl_clone(struct file *file, unsigned long srcfd, BUG_ON(!trans); /* punch hole in destination first */ - btrfs_drop_extents(trans, root, inode, off, off + len, - off + len, 0, &hint_byte, 1); + btrfs_drop_extents(trans, inode, off, off + len, &hint_byte, 1); /* clone data...
2011 Jun 21
[GIT PULL v3] Btrfs: improve write ahead log with sub transaction
I''ve been working to try to improve the write-ahead log''s performance, and I found that the bottleneck addresses in the checksum items, especially when we want to make a random write on a large file, e.g a 4G file. Then a idea for this suggested by Chris is to use sub transaction ids and just to log the part of inode that had changed since either the last log commit or the last
2011 Oct 04
[patch 00/65] Error handling patchset v3
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
2011 Oct 06
[PATCH v0 00/18] btfs: Subvolume Quota Groups
This is a first draft of a subvolume quota implementation. It is possible to limit subvolumes and any group of subvolumes and also to track the amount of space that will get freed when deleting snapshots. The current version is functionally incomplete, with the main missing feature being the initial scan and rescan of an existing filesystem. I put some effort into writing an introduction into
2011 Aug 23
[PATCH 00/21] [RFC] Btrfs: restriper
Hello, This patch series adds an initial implementation of restriper (it''s a clever name for relocation framework that allows to do selective profile changing and selective balancing with some goodies like pausing/resuming and reporting progress to the user. Profile changing is global (per-FS) so far, per-subvolume profiles require some discussion and can be implemented in future.