search for: odirect

It'd be pretty cool if rsync supported use of O_DIRECT on platforms that support it, with or without my odirect package: http://dcs.nac.uci.edu/~strombrg/odirect/ I say this because rsync is sometimes used to move a mountain of data, just once. So there's little point in rsync toasting one's buffer cache. I gather there's something like O_DIRECT on windows too, but it's mostly Linux and F...

...porting 'coherency=full,buffered' option, since rw_lock and i_alloc_sem were never acquired both at the same time, no mattar we doing buffered or direct IO or not. This patch tries to teach ocfs2_dio_end_io fully understand the bahavior of all writes, including buffered/concurrency-allowed-odirect/none-concurrency-odirect writes, to have all lock/sem primitives getting correctly released. Signed-off-by: Tristan Ye <tristan.ye at oracle.com> --- fs/ocfs2/aops.c | 9 +++++++-- fs/ocfs2/aops.h | 6 ++++++ fs/ocfs2/file.c | 16 ++++++++++++++++ 3 files changed, 29 insertions(+),...

As far as I can tell rsync doesn't support this. How hard would it be to implement this? Is it trivial enough to just change the calls in the code with sed? I think this can significantly reduce CPU usage and increase I/O speed when dealing with fast storage solutions. It can make a huge difference when say transferring 30TB of data. Here are some tests I did. So far the only thing I know

Another question. When my database is running, I do [oracle@LNCSTRTLDB03 LPTE3]$ cp --o_direct xdb01.dbf /tmp cp: cannot open `xdb01.dbf' for reading: Permission denied [oracle@LNCSTRTLDB03 LPTE3]$ When the database is shudown it works. Is this normal for ocfs because with any other filesystem I can just copy a file at any time (Its only a testing, I know I cant copy datafiles and have

Hi, If I have ocfs on 2 nodes should I be able to do the following: t=0 Node A echo "1" > /ocfsmount/a Node B cat /ocfsmount/a >>>>Question 1: At this point should I see "1"? t=1 Node A echo "2" > /ocfsmount/a Node B cat /ocfsmount/a >>>>Question 2: At this point should I see

Folks, When a node crashes OCFS2 tends to hang for a while fencing the node off the cluster, is there a way to test whether OCFS2 is ready to resume operations, I am trying to restart a service on a different box and I keep getting errors and I would like to isolate the fact that the filesystem is not ready from the inability to restart the service on a different box. thank you, Enrique Sanchez.

Hi, I've installed Gluster Storage Platform on two servers (mirror) and mounted the volume on a client. I had to mount it using "mount -t glusterfs <MANAGEMENT_SERVER>:<VOLUMENAME-ON-WEBGUI>-tcp <MOUNTPOINT>" because I didn't had a vol file and couldn't generate one with volgen because we don't have shell access to the gluster server right? How can

hi, In kernel 2.6.20-1.2925.fc6 ocfs2 fetches me this make error.How can i fix this? [root@server ocfs2-1.2.4]# make make -C fs make[1]: Entering directory `/opt/ocfs2-1.2.4/fs' make -C ocfs2 stamp-md5 make[2]: Entering directory `/opt/ocfs2-1.2.4/fs/ocfs2' make[2]: Leaving directory `/opt/ocfs2-1.2.4/fs/ocfs2' make -C ocfs2/cluster stamp-md5 make[2]: Entering directory

Running database in ASYNC mode in RHEL 3 has a potential risk of redo logs failure due to some short io's. A note from http://oss.oracle.com/projects/ocfs/dist/files/RedHat/RHEL3/i386/README.txt says that the above mentioned problem is fixed in OCFS 1.0.9-12 "RELEASE 1.0.9-12 Fixes a potential corruption with large, aligned, direct I/Os, for example Oracle redo logs or direct path SQL

We're using RMAN to back up our 9.2 RAC database to an OCFS v1 volume. We have an existing shell script that we use for copying files from disk to tape via tar, one file at a time. (Don't ask why. It's a legacy script. Long story.) We're tweaking this script to use --o_direct when tarring the file to tape and that seems to be working fine: # tape device is /dev/nst0 $ tar

>also - for async io ; >p2448994_9204_LINUX.zip is the patch to apply for oracle >(this is metalink ARU patch number). Wim, The patch description on Metalink says: DIRECT IO SUPPORT ON EXT2 FILESYSTEM Which wasn't quite what I was expecting. Kevin -----Original Message----- From: Wim Coekaerts [mailto:wim.coekaerts@oracle.com] Sent: 25 November 2003 03:23 To: Brian M. Diehl

Hi Guys i got two node RAC cluster Running on RHEL 5.0 .. i just want to what is oracle recomendid Defaults values for below mention parameters Thanks for your help Heartbeat dead threshold network idle timeout network keepalive delay in ms network reconnect delay in ms kernel.panic_on_oops kernel.panic Regards, Devender