similar to: Where is the blktrace utility?

Ok, I got blktrace installed, but I also have some blktrace system taps that I want to test out, but it seems I need to have the kernel debug info installed to get systemtap working. Anyone know where the CentOS kernel-debuginfo RPMs are located? Ross S. W. Walker Information Systems Manager Medallion Financial, Corp. 437 Madison Avenue 38th Floor New York, NY 10022 Tel: (212) 328-2165 Fax:

the -k option was missing from the usage() output and was present only in the man page synopsis. Say a few more words about it. Signed-off-by: Eric Sandeen <sandeen@redhat.com> --- diff --git a/blktrace.c b/blktrace.c index 89aaaac..4e96573 100644 --- a/blktrace.c +++ b/blktrace.c @@ -450,6 +450,7 @@ static char usage_str[] = "\n\n" \ "[ -p <port number> |

I have a couple 64-bit CentOS 5 installations here and was wondering if there was a yum option to have it install only x86_64 arch by default if no arch is specified. I tired of having to append .x86_64 on all package names I only want the x86_64 versions of, if I want the i386 versions too I would add the .i386 package to the list... Thanks All, Ross S. W. Walker Information Systems

Hi, The following patch adds ioprio to blktrace. Explanation: As you know, I/O schedulers such as cfq use io_contexts of current tasks to schedule block I/O. But recently, some are suggesting to use more appropriate io_contexts obtained by, for example, doing io-tracking, making struct bio have io_context member, etc. I thought adding ioprio to blktrace output might be helpful. Implementation:

To all, I was wondering if it was possible to setup samba shares that use subversion as a backing store for the files. Whenever a new file is created it is added to the subversion tree, whenever a file is opened it is checked out of the subversion tree, and whenever it is deleted it is removed from the subversion tree. The idea is that one could use subversion to retain previous versions of

Are there any RPM wizards out there that know how to specify a different architecture for a subpackage in a spec file? I have a package that has a binary component and a non-binary component that I would like split into 2 packages one, the binary which is architecture dependant and the other 'noarch'. I haven't found a spec file that does this yet :-( Ross S. W. Walker

I have my NIS user/group files separate from the system user/group files using libuser to manage them and that works well, but I am trying to find a way to get libuser to invoke a 'make' of the NIS maps whenever it updates the master files. Is there a routine I can configure in libuser to do this, or am I stuck having to do it by cron? Ross S. W. Walker Information Systems Manager

I have a new development box at home that I am working on. Currently it has CentOS 5.1 + Xen 3.2 running several domUs. I am using XDMCP on the domUs and an X Chooser on dom0 for connecting to them and it works well, but now I want to be able to get sound from my domUs and I have been struggling. I can get some from network transparent sound by using ESD, but I have no way of controlling the

I have a new development box at home that I am working on. Currently it has CentOS 5.1 + Xen 3.2 running several domUs. I am using XDMCP on the domUs and an X Chooser on dom0 for connecting to them and it works well, but now I want to be able to get sound from my domUs and I have been struggling. I can get some from network transparent sound by using ESD, but I have no way of controlling the

On Monday, 19 November 2007, Ross S. W. Walker rwalker at medallion.com wrote: <snip> > You can fix it all from CentOS. Ross: In addition to coming up with another slick way to fix this box, which I truly appreciate, you came up with the below: >You need to run some kind of rootkit detection and cleaner on the >system before it reboots or else it will just reinstall itself.

I'm running FC8 with Gnome 2.20.0 at work and I have this interesting situation. I have two disks on the system that are both configured to be mounted in /etc/fstab, but I'm seeing two things I believe are strange. One is that the second drive is not getting mounted at boot time. The other is that I see two icons for the disk on my desktop - one with the mount point of the drive, the

I try to get working together vlan and bonding both for dom0 and domU. I lost packets sent to dom0 while domU is OK. Nightly stats for dom0: 52879 packets transmitted, 45293 received, 14% packet loss, time 52879599ms rtt min/avg/max/mdev = 0.144/0.224/717.306/5.129 ms Nightly stats for domU: 52952 packets transmitted, 52952 received, 0% packet loss, time 52952554ms rtt min/avg/max/mdev =

I have a 5.1 system with Xen installed. The package says 3.0.3, but an 'xm info' shows 3.1. So what is it? Is it 3.0.3 patched to 3.1 or is it 3.1 packaged as 3.0.3? And if it's the former, does anybody have any idea why upstream wouldn't just deploy 3.1 (now 3.1.2) which is more stable? -Ross ______________________________________________________________________ This e-mail,

Hello! I am running CentOS-5 with latest kernel available by deault (2.6.23). I installed it on a Dell XPS machine having Intel Quad processors (4 parallel cpus). I use it to run a computational program and I need to keep the program running for 1-2 months continuously. I generally boot it in runlevel-3 with network ON without X and use ssh from another machine to connect and run the program

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

(I hope the ASCII art doesn't get mangled) I have been working a while trying to get a big picture of how Linux handles sound processing and after much work I have put together this little representation of what I have learned. Please send me any additional comments or components that I may have missed. I hope it helps somebody though who may be struggling in getting sound to work and

(I hope the ASCII art doesn't get mangled) I have been working a while trying to get a big picture of how Linux handles sound processing and after much work I have put together this little representation of what I have learned. Please send me any additional comments or components that I may have missed. I hope it helps somebody though who may be struggling in getting sound to work and

It would be a handy feature to have idmap_ad implement an alloc routine to write back the uid and gid mappings to AD either as SFU attributes or RFC 2307 attributes. I figure this could allow dynamic uid and gid allocation that can be easily preserved across multiple domains in a Windows environment. Has there been any attempt to provide this feature? Ross S. W. Walker Information Systems

Dear List Members, Is there a way to prevent a kernel from being upgraded unless a list of given dependencies are satisfied? What I am getting at is sometimes updated kernels are available before the upgraded versions of the kernel modules in 'extras' are (ie drbd). If there were a way to list these modules as dependencies that must be satisfied before a kernel upgrade can be

Hi, the $subj warning appears sometimes in syslog, in my case when xfstests/209 runs looped. The minimal reproducer is looped mkfs+mount. The message comes from disk-io.c btree_readpage_end_io_hook(): 581 if (check_tree_block_fsid(root, eb)) { 582 printk_ratelimited(KERN_INFO "btrfs bad fsid on block %llu\n", 583 (unsigned long