similar to: slow read IO in domU

I'm trying to do an fsck on an ext3 partition but I'm seeing abysmally slow disk throughput; monitoring with "dstat" (like vmstat) shows ~1200-1500KB/s throughput to the disks. Even with 24hrs of fsck-ing I only get ~3% (still in pass1). The filesystem is ext3 running "e2fsck -C0 /dev/sda3" and about 3.7TB on an x86_64-based system with 4GB RAM. e2fsprogs is 1.41.9.

We are running Zope behind Squid 2.4Stable6 with squid in acceleration mode. The squid box (dual Pentium III 1 GHz, RH 7.2, Linux 2.4.9-21smp, 2GB Ram) has during busy hours a normal load of 0.2-0.3 . From time to time we see spikes over some hours where the load average of the machine is higher than 1.5 although there are no spikes in the CPU utilization. Also there is no increase in the number

Hi, i''ve 5 domU in one dom0 with kernel 2.6.11.12-xen0. All domU are in LVM partitions on dom0. Each domU have 1 /, 1 swap and 1 /home in reiserfs. I must migrate all domU to another server, but how can a migrate all the data and all processes without errors ? I can stop each domU, it''s not a problem ... Where can i find docs about migrating a domU to another dom0 ?

Hello, Can you check following entrys: Old: disk = [''phy:vm_volumes/root.dhcp1,sda1,w'', ''phy:vm_volumes/var.dhcp1,sda2,w'', ''phy:vm_volumes/swap.dhcp1,sda3,w''] New: disk = [''phy:/vm_volumes/root.dhcp1,sda1,w'', ''phy:/vm_volumes/var.dhcp1,sda2,w'',

I made the mistake of looking at disk IO numbers in two different ways -- now I'm confused, because they give inconsistent answers. First way was using 'vmstat 10'. This gave me (apologies for wrapped lines): r b swpd free buff cache si so bi bo in cs us sy id wa st 2 0 2162944 4071928 162444 4218456 0 0 0 286 1103 528 3 2 95 0 0 1 0

I''ve compiled xen without any problems. but now i have to create an initrd file. When i use the command mkinitrd (without any options) the i''ve got some errors: # mkinitrd Root device: /dev/sda3 (mounted on / as reiserfs) Module list: ata_piix mptbase mptscsih qla2300 reiserfs Kernel image: /boot/vmlinuz-2.6.11.12-xen0 Initrd image: /boot/initrd-2.6.11.12-xen0 Shared

Hello, I'm going to be moving a filesystem around, and was planning on using rsync to do it, so like to get some advice from those more experienced than I (both using rsync, and moving filesystems)... I currently have a system that has a separate /usr on an LVM partition. I want to merge this back into the / (root) filesystem. This is a production server (mail server, gentoo linux), so

We are looking at implementing a Linux box running samba in the near future with about 1TB of disk online. The purpose of this box will be for basic file and printer sharing needs. I am doing research on the different journaling file systems avaible in RH 7.3 and up (ext3, reiserFS, and JFS) and was wondering if anyone has had any real world experience with them (mostly reiserFS and JFS) and

Hi, Sorry for the need of the long winded email. Looking for some answers to the following. I am setting up a xen PV domU on top of a LVM partitioned DRBD device. Everything was going just fine until I tried to test the filesystems in the domU. Here is my setup; Dom0 OS: CentOS release 5 (Final) Kernel: 2.6.18-8.1.4.el5.centos.plusxen Xen: xen-3.0.3-25.0.3.el5 DRBD:

What are methods to debug domU when it hangs? Using xen 3.1 compiled from sources I could not manage to launch no domU. Fot instance, I run something like this: =====8<===================== disk = [ ''file:/oradata-act/sles.disk,hda1,w'', '',hdc:cdrom,r'' ] kernel = "/boot/vmlinuz-2.6.18-xen" ramdisk = "/boot/initrd-2.6.18-xen" cpus =

Dear list, I thought I'd just share my experiences with this 3Ware card, and see if anyone might have any suggestions. System: Supermicro H8DA8 with 2 x Opteron 250 2.4GHz and 4GB RAM installed. 9550SX-8LP hosting 4x Seagate ST3250820SV 250GB in a RAID 1 plus 2 hot spare config. The array is properly initialized, write cache is on, as is queueing (and supported by the drives). StoreSave

Dtrace and Performance Teams, I have the following IO Performance Specific Questions (and I''m already savy with the lockstat and pre-dtrace utilities for performance analysis.. but in need of details regarding specifying IO bottlenecks @ the controller or IO bus..) : **Q.A*> Determining IO Saturation bottlenecks ( */.. beyond service times and kernel contention.. )/ I''m

Hey All, I have a cluster setup and exporting gfs storage everything is working ok(as far as I know anyway). But instead of mounting the gfs storage I want the xen guest to be installed on the shared gfs storage. But with my current setup when I install the domU on the gfs storage it changes it to ext3. Is it possible this way or does the domU have to be on an ext file system?

Have amd64 xen 3.1 installed on debian etch. Have all the domu file systems in lvm. Problem 1 If I have a xfs files system when I mount it on domu I get this error: Filesystem "sda5": Disabling barriers, not supported by the underlying device XFS mounting filesystem sda5 Ending clean XFS mount for filesystem: sda5 If I mount with nobarriers the message goes away. If I mount under

I get the following warning when running xend start, and a similar warning sometimes when doing xm commands: /usr/lib/python/xen/xend/XendNode.py:26: RuntimeWarning: Python C API version mismatch for module xen.lowlevel.xc: This Python has API version 1012, module xen.lowlevel.xc has version 1011. import xen.lowlevel.xc /usr/lib/python/xen/xend/xenstore/xstransact.py:10: RuntimeWarning:

Hi guys, I''ve seen this post regarding "lvm resize" and this contains all the information I need to resize a disk inside domU : http://lists.xensource.com/archives/html/xen-users/2006-11/msg00019.html >From this post: "With this I can extend the LVs in the Dom0, and either shutdown the DomU and resize2fs from Dom0 or even (tested on test VMs and low-use

Hey, I've a problem with an ext3 filesystem and don't know how to fix it or find the failure :( The Hardware: Tyan mainboard, AMD Athlon CPU, ARECA ARC-1120 RaidController Raid5 with 400GB Seagate HD's, 756 MB Ram, other harddisks for system, network and avm isdn controller. Couse of the filesystem problems I run memtest and found one bad memory module which I replaced yet. The

Hi guys, I need to move an lvm based domU from one dom0 to another dom0. How do you guys do ths? xm save/restore doesnt have the option to specify lvm target as the storage. Thanks Chris _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users

On 08.03.20 05:47, Tyler Sanderson wrote: > Tested-by: Tyler Sanderson <tysand at google.com> > > Test setup: VM with 16 CPU, 64GB RAM. Running Debian 10. We have a 42 > GB file full of random bytes that we continually cat to /dev/null. > This fills the page cache as the file is read. Meanwhile we trigger > the balloon to inflate, with a target size of 53 GB. This setup

On 08.03.20 05:47, Tyler Sanderson wrote: > Tested-by: Tyler Sanderson <tysand at google.com> > > Test setup: VM with 16 CPU, 64GB RAM. Running Debian 10. We have a 42 > GB file full of random bytes that we continually cat to /dev/null. > This fills the page cache as the file is read. Meanwhile we trigger > the balloon to inflate, with a target size of 53 GB. This setup