Displaying 7 results from an estimated 7 matches for "ac_max_block".
2008 Sep 04
4
[PATCH 0/3] ocfs2: Switch over to JBD2.
ocfs2 currently uses the Journaled Block Device (JBD) for its
journaling. This is a very stable and tested codebase. However, JBD
is limited by architecture to 32bit block numbers. This means an ocfs2
filesystem is limited to 2^32 blocks. With a 4K blocksize, that's 16TB.
People want larger volumes.
Fortunately, there is now JBD2. JBD2 adds 64bit block number support
and some other
2009 Feb 24
2
[PATCH 1/3] ocfs2: Optimize inode allocation by remembering last group.
In ocfs2, the inode block search looks for the "emptiest" inode
group to allocate from. So if an inode alloc file has many equally
(or almost equally) empty groups, new inodes will tend to get
spread out amongst them, which in turn can put them all over the
disk. This is undesirable because directory operations on conceptually
"nearby" inodes force a large number of seeks.
So
2009 Jan 15
5
[PATCH 0/3] ocfs2: Inode Allocation Strategy Improvement.v2
Changelog from V1 to V2:
1. Modify some codes according to Mark's advice.
2. Attach some test statistics in the commit log of patch 3 and in
this e-mail also. See below.
Hi all,
In ocfs2, when we create a fresh file system and create inodes in it,
they are contiguous and good for readdir+stat. While if we delete all
the inodes and created again, the new inodes will get spread out and
that
2009 Mar 18
2
[RFC] metadata alloc fix in machines which has PAGE_SIZE > CLUSTER_SIZE
Hi Mark/Joel,
I meet with some meta allocation bugs when I implement reflink these
days. And after some investigation, I think we should have the same
problem when we have PAGE_SIZE > CLUSTER_SIZE. So I create a scenario
today in one ppc box and try. the box panic as I expected. ;)
The scenario is that: Create a file with the disk layout like this(with
bs=512, and cs=4K).
debugfs: stat
2009 Mar 17
33
[git patches] Ocfs2 updates for 2.6.30
Hi,
The following patches comprise the bulk of Ocfs2 updates for the
2.6.30 merge window. Aside from larger, more involved fixes, we're adding
the following features, which I will describe in the order their patches are
mailed.
Sunil's exported some more state to our debugfs files, and
consolidated some other aspects of our debugfs infrastructure. This will
further aid us in debugging
2009 Mar 27
42
[PATCH 00/42] ocfs2: Add reflink file support. V1
Hi all,
So I have finally finished the v1 of reflink for ocfs2. It has some
bugs that I am still investigating, but the schema is almost there. So
I'd like to send it out first for review. And Tristan and I will
continue to work on the stability of the code.
The general information for reflink, please see
http://oss.oracle.com/osswiki/OCFS2/DesignDocs/Reflink.
For the design doc, please
2009 Apr 03
42
[PATCH 00/42] ocfs2: Add reflink file support. V2
Hi all,
Change from v1 to v2: bug fix and metadata/credits reservation
improvement.
The general information for reflink, please see
http://oss.oracle.com/osswiki/OCFS2/DesignDocs/Reflink.
For the design doc, please see
http://oss.oracle.com/osswiki/OCFS2/DesignDocs/RefcountTrees
http://oss.oracle.com/osswiki/OCFS2/DesignDocs/ReflinkOperation