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Hello, What is the simpliest way to run Redhat 7.3 server as CentOS 5 domU? I see that Xen emulates Intel PIIX ATA controller for HVM domUs but latest kernel of Redhat 7.3 (2.4.20-20.7smp) has no ata_piix kernel module yet. Is it possible to download it somewhere or there is another way? :) And I'd like to avoid reinstalling them with the new OS. Preferably they'd just die their

Hello, I converted one of my servers to ext3 and load average numbers went up. Now they are ~2-3 while on ext2 LA was <0.4. And I'm constantly seeing processes and kjournald in D state. vmstat confirms that. But even in such LA CPUs are ~99% idle. What can be wrong? RedHat 7.1 kernel 2.4.18-18.7.xsmp. SCSI cards: Compaq RAID array controller (cciss) and Q Logic ISP1020 (isp_mod).

Hello, Is there some document about ext3 performance tuning and choosing the right type and size of journal? Except RedHat's white paper. From what I read I understood that for typical operations data=ordered is prefered. For the cases when there are many writes not appending to files data=journal is the choice. And if I want to get the most performance or in case where program is doing

Hello, We have long running problem with NetApp filers. When we connect server to the filer sequential read performance is ~70MB/s. But once we run database on the server seq read performance drops to ~11MB/s. That's happening with two servers. One is running Oracle another - MySQL. During speed tests database load is very light (less than 1MB/s of reads and writes). During the tests NetApp

Hello, What do you use to manage virtual Xen machines? Nothing complex though preferably. :) I've already converted some servers for a Xen dom0 and starting to loose the picture - which VM runs where and how much resources left on each server. Regards, Mindaugas

Hello, How to upgrade existing ext3 partition to new features? Moved from RHEL3 to RHEL4. I had to install from c0d0p6 so partition could not be reformated during install. Thanks, Mindaugas # dumpe2fs /dev/cciss/c0d0p1 | fgrep features dumpe2fs 1.35 (28-Feb-2004) Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery sparse_super # dumpe2fs

http://www.sample.banga.lt/crash.gif System - fully (except kernel) updated RedHat 7.3. Filesystems - ext3 in default ordered mode. What could be the cause of the crash? Kernel update will solve the problem? Thanks, Mindaugas

Hello, Just became curious - is O_DIRECT already supported on ext3 or not yet? And a little bit offtopic :). Is that flag supported on some other filesystem other than ext2? Thanks, Mindaugas

Hello, Maybe it's already FAQ but how to hide .journal file on rootfs? I upgraded filesystems on one of my servers from ext2 to ext3 and everything went smoothly. I'd like to avoid booting from alternative media because server is in production. FS update done together with server's kernel update. Thanks, Mindaugas

Hello, After some fiddling with the server now I have broken RAID1 with the "current" mirror on the disk with few unreadable sectors. If I try to re-add other disk to the mirror resync goes till those bad sectors and then starts from the beginning. And so on. Is it possible to somehow force resync to continue even after errors? Manual resync with dd would require a bit too long

Hello, What is the simpliest way to run Redhat 7.3 server as CentOS 5 domU? I see that Xen emulates Intel PIIX ATA controller for HVM domUs but latest kernel of Redhat 7.3 (2.4.20-20.7smp) has no ata_piix kernel module yet. Is it possible to download it somewhere or there is another way? :) Regards, Mindaugas

Hello, I''m trying to shape traffic by IP addresses and by 802.1q vlans. But when I add 802.1q filter filters output looks strange. Maybe I''m missing some options to TC? Thanks, Mindaugas # ./bin/tc -s -d filter show dev eth0 filter parent 1: protocol ip pref 1 u32 filter parent 1: protocol ip pref 1 u32 fh 800: ht divisor 1 filter parent 1: protocol ip pref 1 u32 fh

During my tests I''m starting to feel stupid :). Traffic shaping works quite on its own. System: RedHat 7.3, RedHat kernel 2.4.18-18.7.xsmp, HTB version 3.6, interfaces eth0 and eth1 are acting as bridge br0. If TCP shaping almost works, it just exceeds limits UDP is not shaped. Traffic flows PC=>eth0=>eth1=>PC. Statistics shown is for just UDP traffic (1mbit of small udp