Displaying 20 results from an estimated 1000 matches similar to: "[PATCH 0/5] asynchronous commit, snapshot ponies"
2010 Oct 25
14
[PATCH 0/6] Btrfs commit fixes, async subvol operations
Hi Chris,
This is the extent of my current queue of Btrfs snapshot/subvol/commit
stuff. Most of these were posted several months ago. Can be sent
upstream during this merge window? Not having this functionality is
becoming a bit of a roadblock for our efforts to keep the Ceph data in a
consistent state.
These patches are also available from
2011 Oct 06
26
[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 Jun 21
19
[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
2007 Aug 09
1
[RFC] All my fsync changes
Hello,
Ok here are all my fsync changes, including the fix for the put_transaction
stuff that I posted earlier. I figure it'll be easier to just commit it as one
thing then each individual peice. The additional thing that I did was add a
radix tree that tracks the current outstanding transactions. I also added a
field to the in memory btrfs inode that keeps track of the last transaction
2013 Mar 04
2
[PATCH 1/2] Btrfs: fix wrong handle at error path of create_snapshot() when the commit fails
There are several bugs at error path of create_snapshot() when the
transaction commitment failed.
- access the freed transaction handler. At the end of the
transaction commitment, the transaction handler was freed, so we
should not access it after the transaction commitment.
- we were not aware of the error which happened during the snapshot
creation if we submitted a async transaction
2011 Mar 08
6
[PATCH v1 0/6] btrfs: scrub
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
2013 Apr 25
10
[PATCH v4 0/3] Btrfs: quota rescan for 3.10
The kernel side for rescan, which is needed if you want to enable qgroup
tracking on a non-empty volume. The first patch splits
btrfs_qgroup_account_ref into readable ans reusable units. The second
patch adds the rescan implementation (refer to its commit message for a
description of the algorithm). The third patch starts an automatic
rescan when qgroups are enabled. It is only separated to
2011 May 11
8
[PATCH 1/4] Btrfs: map the node block when looking for readahead targets
If we have particularly full nodes, we could call btrfs_node_blockptr up to 32
times, which is 32 pairs of kmap/kunmap, which _sucks_. So go ahead and map the
extent buffer while we look for readahead targets. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
---
fs/btrfs/ctree.c | 23 +++++++++++++++++++++--
1 files changed, 21 insertions(+), 2 deletions(-)
diff --git
2012 Aug 01
17
[PATCH] add crtime to the snapshot list
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)
2009 Nov 10
12
[RFC] big fat transaction ioctl
Hi all,
This is an alternative approach to atomic user transactions for btrfs.
The old start/end ioctls suffer from some basic limitations, namely
- We can''t properly reserve space ahead of time to avoid ENOSPC part
way through the transaction, and
- The process may die (seg fault, SIGKILL) part way through the
transaction. Currently when that happens the partial transaction will
2009 Aug 24
0
[PATCH] Btrfs: proper metadata -ENOSPC handling
This patch finally gives us full proper -ENOSPC handling for btrfs. Now
whenever you do a btrfs_start_transaction, you must specify the number of items
you are planning to add/delete/modify. The worst case number of blocks that
could be modified by changing that number of items will be calculated and
checked against the amount of free space in the space_info where the root you
are modifying
2011 Jun 10
6
[PATCH v2 0/6] btrfs: generic readeahead interface
This series introduces a generic readahead interface for btrfs trees.
The intention is to use it to speed up scrub in a first run, but balance
is another hot candidate. In general, every tree walk could be accompanied
by a readahead. Deletion of large files comes to mind, where the fetching
of the csums takes most of the time.
Also the initial build-ups of free-space-caches and
2011 Jan 06
3
Offline Deduplication for Btrfs V2
Just a quick update, I''ve dropped the hashing stuff in favor of doing a memcmp
in the kernel to make sure the data is still the same. The thing that takes a
while is reading the data up from disk, so doing a memcmp of the entire buffer
isn''t that big of a deal, not to mention there''s a possiblity for malicious
users if there is a problem with the hashing algorithms we
2011 Dec 09
10
[PATCH 0/3] Btrfs: add IO error device stats
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
2009 Jan 24
2
[PATCH] btrfs: flushoncommit mount option
Hi Chris-
Here''s a simpler version of the patch that drops the unrelated sync_fs
stuff.
thanks-
sage
The ''flushoncommit'' mount option forces any data dirtied by a write in a
prior transaction to commit as part of the current commit. This makes
the committed state a fully consistent view of the file system from the
application''s perspective (i.e., it
2012 May 25
6
[PATCH v5 0/3] Btrfs: add IO error device stats
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
2010 Apr 19
0
[PATCH 08/12] Btrfs: Introduce global metadata reservation
Reserve metadata space for extent tree, checksum tree and root tree
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
---
diff -urp 8/fs/btrfs/ctree.h 9/fs/btrfs/ctree.h
--- 8/fs/btrfs/ctree.h 2010-04-18 10:26:38.327697818 +0800
+++ 9/fs/btrfs/ctree.h 2010-04-18 10:30:01.883697869 +0800
@@ -682,21 +682,15 @@ struct btrfs_space_info {
u64 bytes_reserved; /* total bytes the allocator has
2012 Nov 01
41
[Request for review] [RFC] Add label support for snapshots and subvols
From: Anand Jain <anand.jain@oracle.com>
(This patch is for the review/test not yet for the integration).
Here is an implementation of the feature to add label to the
subvolume and snapshots. Which would help sysadmin to better manager
the subvol and snapshots.
This can be done in two ways, one - using attr which is user land
only changes but drawback is able to change the label
2011 Jul 21
10
[PATCH v5 0/8] Btrfs scrub: print path to corrupted files and trigger nodatasum fixup
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
2012 Aug 24
4
[PATCH] Btrfs: pass lockdep rwsem metadata to async commit transaction
The freeze rwsem is taken by sb_start_intwrite() and dropped during the
commit_ or end_transaction(). In the async case, that happens in a worker
thread. Tell lockdep the calling thread is releasing ownership of the
rwsem and the async thread is picking it up.
Josef and I worked out a more complicated solution that made the async
commit thread join and potentially get a later transaction, but