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...ever, there just hasn't been enough real testing with aio, need to ggather more evidence. the reason the logfiles are annoying is because he way aio is implemented and how we call it, it cannto handle short io's or non contig aio submits. ____________ Baqir Hussain Database Administrator zipRealty Inc. (510)735-2696

...out (28651) ERROR: err=-14, Linux/ocfsmain.c, 1887 error in mapping iobuf need to fail out (28727) ERROR: err=-14, Linux/ocfsmain.c, 1887 error in mapping iobuf need to fail out (28965) ERROR: err=-14, Linux/ocfsmain.c, 1887 Please advise. Thanks ____________ Baqir Hussain Database Administrator zipRealty Inc. (510)735-2696 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://oss.oracle.com/pipermail/ocfs-users/attachments/20040920/a77ad9fe/attachment.html

...ple Oracle redo logs or direct path SQL loader." What it means that we can run database in ASYNC mode without any potential risk of redo log corruption by installing OCFS "1.0.9-12" or later "1.0.12". Please advise. Thanks ____________ Baqir Hussain Database Administrator zipRealty Inc. (510)735-2696 > > > Next, I saw a Metalink thread which suggests that async I/O is not > > supported on OCFS with RHAS 2.1. It doesn't say anything > about RHEL3. > > We've been using async in our testing with no problems so > far, and plan to > &gt...

(Yep, it's me again) We've worked around some minor glitches and now have a pair of nodes happily sharing an OCFS volume. I was wondering, though, if it was possible to configure a second private IP address so that the nodes could communicate over more than one Gigabit Ethernet connection. Our RAC books and online docs make some vague references to multiple interconnects, but I have yet

A few weeks back we opened a TAR with Oracle support to determine whether an OCFS (1.0.9-12) + async configuration was considered supportable. At first a technician said yes, but I followed up with Wim's explanation of how that combination is potentially troublesome and inadequately tested. The technician double-checked, then confirmed that OCFS + async is considered risky. He did say that a

Hello again. Our production cluster has begun experiencing some vicious slowdowns that may (or may not) be related to the filesystems. When the problem occurs, the load average on the servers jumps up to 30 or higher. Usually one node will climb while the other drops, then they will switch places a few minutes later. At one point, we had one node's load average up over 300. Our site

I'm preparing a pair of Red Hat Enterprise Linux 3 servers on which to test RAC. Currently they are running the 2.4.21-4.0.2 kernel. I saw that the 1.0.9-9 OCFS binaries are tied to the 4.0.1 kernel, and confirmed that myself. The 1.0.9-12 packages are dated a few days later and don't refer to a specific kernel version, so I assumed they would work with 4.0.2. However, when I try to

We finally seem to have worked most of the kinks out of our OCFS/RAC setup, and are running a mass import to clone our production database for testing. While this has been going on, I fired up ocfstool to check out the states of the various shared volumes. In several cases, I saw (in the File Listing tab) multiple entries for some directories and files at the filesystem root. The duplicate

I've got my RAC cluster running pretty smoothly now (thanks again for all the help so far), but I only have single connections between the servers and the RAID array. The servers each have two Qlogic HBAs, and I'd like to find out if there's any reasonable way to implement multipathing. The platform is RHEL 3, and Red Hat's knowledgebase indicates that they strongly recommend

Wim, I opened a TAR on this issue, and was informed that async+ocfs is supported (as opposed to "works") as of 1.0.9-12. If this is not the case, then it sounds like there may be a miscommunication on the Oracle side. > -----Original Message----- > From: Wim Coekaerts [mailto:wim.coekaerts@oracle.com] > Sent: Saturday, March 06, 2004 10:36 PM > To: Derek Suzuki > Cc:

We are running 2-node RAC on RedHat Linux-86 (32-bit) the following was done on (4/10/2005) 1. upgrade OS to update 4 (kernel-smp-2.4.21-27.0.2.EL) 2. upgrade OCFS 1.0.12 to ocfs-2.4.21-EL-smp-1.0.14-1 3. upgrade from 9.2.0.5 to 9.2.0.6 (IN 2-Node RAC) 4. change defualt temporary tablespace to regular one (Rac bug fix) 5. Enable aysnc mode by applying patch 3208258_9206 ** Patch 4153303 applied on

I'm pleased to see that the new release has full support for asynchronous I/O. I was surprised, though, since I thought that the aio bug in the 2.4 kernels couldn't be fixed without breaking binary compatibility. Was there a special fix for this in the RHEL3 update 4 kernel? Anyway, thanks for all your efforts. We're looking forward to testing aio with the new version next week.

Is there a simple way to check for the existence of a partial before displaying it? I have some code that creates a dynamic partial depending on the city a particular object is located in. There are some cities that do NOT have partials defined for them, but I still want the overall page to display. Is there a way to either chefck for existence before displaying (enclosed in an if

I've created a few OCFS filesystems (RHEL 3, OCFS 1.0.9-12) while attempting to assign ownership by oracle:dba. I've done this both with ocfstool and mkfs.ocfs. They both seem to accept the parameters, but the resulting filesystem is always owned by root:root. This is not a fatal problem, since we can just throw all of our Oracle files into a properly-owned subdirectory in each

Oracle appears to have Wim chained in the basement, forced to answer mailing list questions at all hours. I do appreciate it. Our cluster has been stable since we installed RAC, but a few minor issues have me concerned. First, our storage array seems to maintain continuous low-level activity even when the database is shut down. The CPUs spend a modest amount of time in iowait state while this

Sort of a followup... We've been running OCFS in sync mode for a little over a month now, and it has worked reasonably well. Performance is still a bit spotty, but we're told that the next kernel update for RHEL3 should improve the situation. We might eventually move to Polyserve's cluster filesystem for its multipathing capability and potentially better performance, but at least we

Hello again. I am setting up a new pair of servers to run RAC. They're connected via fibre-channel to a hardware RAID array, and both are able to see the exposed LUNs. When I create an OCFS filesystem on one node with mkfs.ocfs, I can mount it. When I try to mount from the other node, however, it fails. After that, the filesystem is left in a state where neither node can mount it. The