Is your system running out of memory or is there any other thread like
flush-btrfs competing for the same page?
I can only see one process in your ftrace log. You may need to trace all
btrfs.ko function calls instead of a single process. Thanks!
-Original Message-
From:
On Friday, February 25, 2011 04:16:27 PM Li Dongyang wrote:
Thanks for your comments, here is the updated patch.
I've tested it with xfstests 251(thanks to Lukas), and it looks fine to me.
when we call btrfs_map_block() for RAID0/1/10/ or DUP, it only returns a single
stripe
length at most,
Hi Mitch,
I suspect there's a lock contention between flush-btrfs (lock_dellalloc_pages)
and btrfs_file_aio_write. However I can not recreate it locally. Could you
please try below patch? Thanks!
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 65338a1..b9d0929 100644
--- a/fs/btrfs/file.c
On Tue, Mar 1, 2011 at 4:14 AM, Zhong, Xin xin.zh...@intel.com wrote:
Is your system running out of memory or is there any other thread like
flush-btrfs competing for the same page?
There's no sign of memory pressure. Although I only have 1 GB in this
box, I'm still show ~1/2 GB RAM free
On Tue, Mar 1, 2011 at 5:56 AM, Zhong, Xin xin.zh...@intel.com wrote:
Hi Mitch,
I suspect there's a lock contention between flush-btrfs
(lock_dellalloc_pages) and btrfs_file_aio_write. However I can not recreate
it locally. Could you please try below patch? Thanks!
diff --git
Correctly unlock delayed_refs in the error case.
Signed-off-by: Daniel J Blueman daniel.blue...@gmail.com
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index e1aa8d6..c48d699 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -2787,6 +2787,7 @@ static int
Prevent needless exporting of internal functions from compilation
units by marking them static.
Signed-off-by: Daniel J Blueman daniel.blue...@gmail.com
diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index b5baff0..5e49196 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -74,7 +74,7 @@
Hi, Mitch
I think you can config ftrace to just trace function calls of btrfs.ko which
will save a lot of trace buffer space. See below command:
#echo ':mod:btrfs' /sys/kernel/debug/tracing/set_ftrace_filterAnd please send
out the full ftrace log again.
Another helpful information might be
Hi all
Having managed ZFS for about two years, I want to post a wishlist.
INCLUDED IN ZFS
- Mirror existing single-drive filesystem, as in 'zfs attach'
- RAIDz-stuff - single and hopefully multiple-parity RAID configuration with
block-level checksumming
- Background scrub/fsck
- Pool-like
Excerpts from Roy Sigurd Karlsbakk's message of 2011-03-01 13:35:42 -0500:
Hi all
Having managed ZFS for about two years, I want to post a wishlist.
INCLUDED IN ZFS
- Mirror existing single-drive filesystem, as in 'zfs attach'
This one is easy, we do plan on adding it.
- RAIDz-stuff -
On Tue, Mar 1, 2011 at 10:39 AM, Chris Mason chris.ma...@oracle.com wrote:
Excerpts from Roy Sigurd Karlsbakk's message of 2011-03-01 13:35:42 -0500:
- Pool-like management with multiple RAIDs/mirrors (VDEVs)
We have a pool of drives nowI'm not sure exactly what the vdevs are.
This
2011/3/1 Xin Zhong thierryzh...@hotmail.com:
Hi, Mitch
I think you can config ftrace to just trace function calls of btrfs.ko which
will save a lot of trace buffer space. See below command:
#echo ':mod:btrfs' /sys/kernel/debug/tracing/set_ftrace_filterAnd please
send out the full ftrace
On Mon, Feb 28, 2011 at 02:20:22PM -0600, Mitch Harder wrote:
As promised, I'm put together a modified file.c with many trace_printk
debugging statements to augment the ftrace.
*snip*
Just my few cents. I've applied the patch from Chris Mason (Sun, 27 Feb
2011 20:46:05 -0500) and this one from
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