search for: dios

V1->V2: -Changed dio_end_io to EXPORT_SYMBOL_GPL -Removed the own_submit blockdev dio helper -Removed the boundary change V2->V3 -Made it so we keep track of what the current logical offset in the file we have a BIO setup for so we can pass it into the submit_io hook. Because BTRFS can do RAID and such, we need our own submit hook so we can setup the bio''s in the correct fashion,

Dear List Users Greetings, i have come across the problem where CentOS 6.3 x64 has more than 700 processes running. i am not sure where to start, what in normal or abnormal. [root at jet]# ps -A PID TTY TIME CMD 1 ? 00:00:03 init 2 ? 00:00:00 kthreadd 3 ? 00:00:00 migration/0 4 ? 00:00:00 ksoftirqd/0 5 ? 00:00:00 migration/0 6

This idea is from ext4. By this patch, we can make the dio write parallel, and improve the performance. We needn''t worry about the race between dio write and truncate, because the truncate need wait untill all the dio write end. And we also needn''t worry about the race between dio write and punch hole, because we have extent lock to protect our operation. I ran fio to test the

Andrew, can you please send this on to Linus and -stable ASAP? It's causing massive problems for our users. On Thu, Aug 12, 2010 at 04:50:59PM -0400, Jeff Moyer wrote: > Hi, > > commit c2c6ca4 (direct-io: do not merge logically non-contiguous > requests) introduced a bug whereby all O_DIRECT I/Os were submitted a > page at a time to the block layer. The problem is that the

V1->V2: Check to see if our current ppos is >= i_size after a short DIO read, just in case it was actually a short read and we need to just return. This is similar to what already happens in the write case. If we have a short read while doing O_DIRECT, instead of just returning, fallthrough and try to read the rest via buffered IO. BTRFS needs this because if we encounter a compressed or

Hi, this is about an issue newer kernels show, bysplitting direct I/O requests into 4k pieces to directly merge them in the Block Device Layer afterwards. If anyone is interested in own tests just use a simple command like dd if=/mnt/test/test-dd1 of=/dev/null iflag=direct bs=64k count=1 in combination with blktrace. The following patch is more a proposal for discussion than a solution, well

V4 changes: add Acked-by: Joel Becker <jlbec at evilplan.org> V3 changes: - add Cc: stable at vger.kernel.org in the patch header to align with stable rules - add Acked-by: Jeff Moyer <jmoyer at redhat.com> V2 changes: - update the patch header of the first patch to make it more clear. This patch list fixes an issue about ocfs2 aio/dio write process hang. The call trace is like

Apparently it is ok to submit a read to an IDE device with the same target page for different offsets. This is what Windows does under qemu. The problem is under DIO we expect them to be different buffers for checksumming reasons, and so this sort of thing will result in checksum errors, when in reality the file is fine. So when reading, check to make sure that all iov bases are different, and

i_alloc_sem has always been a bit of an odd "lock". It''s the only remaining rw_semaphore that can be released by a different thread than the one that locked it, and it''s use case in the core direct I/O code is more like a counter given that the writers already have external serialization. This series removes it in favour of a simpler counter scheme, thus getting rid

V1->V2: Check to see if our current ppos is >= i_size after a short DIO read, just in case it was actually a short read and we need to just return. This is similar to what already happens in the write case. If we have a short read while doing O_DIRECT, instead of just returning, fallthrough and try to read the rest via buffered IO. BTRFS needs this because if we encounter a compressed or

We have been unconditionally allocating a new bio and re-adding all pages from our original bio to the new bio. This is needed if our original bio is larger than our stripe size, but if it is smaller than the stripe size then there is no need to do this. So check the map length and if we are under that then go ahead and submit the original bio. Thanks, Signed-off-by: Josef Bacik

Helllo all! I need to know whether this project intends to support Visual Studio 2008 C++ compiler or not. Thanks! Dio PS. I have a hard time to make the project compiled by MSVC 2008 -- eventhough it is smoothly compiled by MSVC 2005

V1->V2: Check to see if our current ppos is >= i_size after a short DIO read, just in case it was actually a short read and we need to just return. This is similar to what already happens in the write case. If we have a short read while doing O_DIRECT, instead of just returning, fallthrough and try to read the rest via buffered IO. BTRFS needs this because if we encounter a compressed or

This depends on the change to ordered data search. Signed-off-by: jim owens <owens6336@gmail.com> --- fs/btrfs/dio.c | 150 +++++++++++++++++++++++++++++++++++++++----------------- 1 files changed, 104 insertions(+), 46 deletions(-) diff --git a/fs/btrfs/dio.c b/fs/btrfs/dio.c index b6934be..c930ff5 100644 --- a/fs/btrfs/dio.c +++ b/fs/btrfs/dio.c @@ -435,14 +435,81 @@ static void

Hello, I 've messages in my log...it's regular...but I don?t know if this is a serious problem ! My conf : Samba 3.0.24 and Debian Etch Security Events =-=-=-=-=-=-=-= Aug 20 17:17:08 dios smbd[9051]: read_data: read failure for 4 bytes to client 10.x.x.x. Error = Aucun chemin d'acc?s pour atteindre l'h?te cible System Events =-=-=-=-=-=-= Aug 20 17:17:08 dios smbd[9051]: [2007/08/20 17:17:08, 0] lib/util_sock.c:read_data(534) Extract smb.conf : [global] security = ads...

This is my still-working-on-it code for btrfs directIO read. I''m posting it so people can see the progress being made on the project and can take an early shot at telling me this is just a bad idea and I''m crazy if they want to, or point out where I made some stupid mistake with btrfs core functions. The code is not complete and *NOT* ready for review or testing. I looked at

On Wed, Jul 5, 2017 at 5:22 PM, Atin Mukherjee <amukherj at redhat.com> wrote: > And what does glusterd log indicate for these failures? > See here in gzip format https://drive.google.com/file/d/0BwoPbcrMv8mvYmlRLUgyV0pFN0k/view?usp=sharing It seems that on each host the peer files have been updated with a new entry "hostname2": [root at ovirt01 ~]# cat

Hi all, I am having problems to get the SeaLevel IO card to work with CentOS distro. Basically the card is being recognised and shown by lspci BUT /proc/devices file is not updated with the new devices does anyone know why. ? Could someone tell me what/where infos are needed to get /proc/devices to be updated. The reason I require the /proc/devices infos is because I want to run a mknod

Dio <dio.rahman at gmail.com> writes: [snip] > PS. I have a hard time to make the project compiled by MSVC 2008 -- > eventhough it is smoothly compiled by MSVC 2005 Have you tried cmake? http://llvm.org/docs/CMake.html -- Oscar

> Have you tried cmake? > > http://llvm.org/docs/CMake.html Yes! Of course! :-) I have configured the cmake to create VS 2008 solution. But , it is failed. Dio