XFS Status Updates: Difference between revisions

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== XFS status update for November 2008 ==
== XFS Status Updates ==


The mainline kernel is now at 2.6.28-rc6 and includes a small number of
* [[XFS status update for 2013]] ([[XFS_status_update_for_2013#XFS status update for 2013|Latest]])
XFS fixes.  There have been no updates to the XFS development tree during
* [[XFS status update for 2012]] ([[XFS_status_update_for_2012#XFS status update for February 2012|Latest]])
November.  Without new regressions that large number of changes that
* [[XFS status update for 2011]] ([[XFS_status_update_for_2011#XFS status update for December 2011|Latest]])
missed 2.6.28 has thus stabilized to be ready for 2.6.29.  In the meantime
* [[XFS status update for 2010]] ([[XFS_status_update_for_2010#XFS status update for December 2010|Latest]])
kernel-side development has been slow, with the only major patch set
* [[XFS status update for 2009]] ([[XFS_status_update_for_2009#XFS status update for December 2009|Latest]])
being a wide number of fixes to the compatibility for 32 bit ioctls on
* [[XFS status update for 2008]] ([[XFS_status_update_for_2008#XFS status update for December 2008|Latest]])
a 64 bit kernel.
* [[OLD_News|XFS status update before 2008]]
 
In the meantime there has been a large number of commits to the user space
tree, which mostly consist of smaller fixes.  xfsprogs is getting close
to have the 3.0.0 release which will be the first full resync with the
kernel sources since the year 2005.
 
== XFS status update for October 2008 ==
 
Linux 2.6.27 released with all the bits covered in last month's report.  It
did however miss two important fixes for regressions that a few people hit.
2.6.27.3 or later are recommended for use with XFS.
 
In the meantime the generic btree implementation, the sync reorganization
and after a lot of merge pain the XFS and VFS inode unification hit the
development tree during the time allocated for the merge window.  No XFS
updates other than the two regression fixes also in 2.6.27.3 have made it
into mainline as of 2.6.28-rc3.
 
The only new feature on the list in October is support for the fiemap
interface that has been added to the VFS during the 2.6.28 merge window.
However there was lot of patch traffic consisting of fixes and respun
versions of previously known patches.  There still is a large backlog of
patches on the list that is not applied to the development tree yet.
 
== XFS status update for September 2008 ==
 
With Linux 2.6.27 still not released but only making slow progress from 2.6.27-rc5 to 2.6.27-rc8 XFS changes in mainline have been minimal in September with only about half a dozen bug fixes patches.
 
In the meantime the generic btree patch set has been committed to the development tree, but not many other updates yet. On the user space side xfsprogs 2.10.1 has been released on September 5th with a number of important bug fixes. Following the release of xfsprogs 2.10.1 open season for development of the user space code has started. The first full update of the shared kernel / user space code in libxfs since 2005 has been committed. In addition to that the number of headers installed for the regular devel package has been reduced to the required minimum and support for checking the source code for endianess errors using sparse has been added.
 
The patch sets to unify the XFS and Linux inode structures, and rewrite various bits of the sync code have seen various iterations on the XFS list, but haven't been committed yet. A first set of patches implementing CRCs for various metadata structures has been posted to the list.
 
== XFS status update for August 2008 ==
 
With the 2.6.27-rc5 release the 2.6.27 cycle is nearing it's end. The major XFS feature in 2.6.27-rc5 is support for case-insensitive file names. At this point it is still limited to 7bit ASCII file names, with updates for utf8 file names expected to follow later. In addition to that 2.6.27-rc5 fixes a long-standing problem with non-EABI arm compiler which pack some XFS data structures wrongly. Besides this 2.6.27-rc5 also contains various cleanups, most notably the removal of the last bhv_vnode_t instances, and most uses of semaphores. As usual the diffstat for XFS from 2.6.26 to 2.6.26-rc5 is negative:
 
      100 files changed, 3819 insertions(+), 4409 deletions(-)
 
On the user space front a new minor xfsprogs version is about to be released containing various fixes including the user space part of arm packing fix.
 
Work in progress on the XFS mailing list are a large patch set to unify the alloc, inobt and bmap btree implementation into a single that supports arbitrarily pluggable key and record formats. These btree changes are the first major preparation for adding CRC checks to all metadata structures in XFS, and an even larger patch set to unify the XFS and Linux inode structures, and perform all inode write back from the btree uses instead of an inode cache in XFS.

Latest revision as of 18:50, 17 June 2013