Reloading lvectl: Error writing /sys/module/lve/parameters/lve_ubc

[aiolia.xu]

Hello, I have a server with dircectadmin control panel, I run "yum update" ,I found an error "Error writing /sys/module/lve/parameters/lve_ubc" ,

now I can reload lvectl ,I get error as blow:

[root@april ~]# /etc/init.d/lvectl reload
Reloading lvectl: Error writing /sys/module/lve/parameters/lve_ubc
X [FAILED]

lve_ubc is missing.

[root@april sys]# ls /sys/module/lve/parameters/lve_ubc
ls: /sys/module/lve/parameters/lve_ubc: No such file or directory

[root@april ~]# uname -r
2.6.18-294.26.1.el5.lve0.8.18

[root@april ~]# lsmod|grep lve
lve 59016 27

[root@april ~]# top
top - 20:17:11 up 9 days, 2:10, 2 users, load average: 2.74, 2.85, 2.78
Tasks: 489 total, 4 running, 485 sleeping, 0 stopped, 0 zombie
Cpu(s): 21.8%us, 18.2%sy, 1.3%ni, 57.2%id, 0.7%wa, 0.0%hi, 0.7%si, 0.0%st
Mem: 8163484k total, 7798652k used, 364832k free, 454012k buffers
Swap: 4200888k total, 217188k used, 3983700k free, 5307664k cached

can you tell ,how to fix the problem ? thanks.

[iseletsk]

You are running old kernel, please, update to latest kernel, and lve_ubc will become available.
Also, there are several major bugs in that kernel, so upgrade is highly recommended.

[hieluki]

I have same problem.

root@xxx [~]# uname -r
2.6.18-294.26.1.el5.lve0.7.45xen

How update kernel?

Thanks.

[iseletsk]

# yum update kernel-xen
# reboot

[hieluki]

Hello.

This result.

root@xxx [/]# yum upd ate kernel-xen
Loaded plugins: fastestmirror, rhnplugin
Loading mirror speeds from cached hostfile
* cloudlinux-base: repo.cloudlinux.com
* cloudlinux-updates: repo.cloudlinux.com
* cloudlinux-x86_64-server-5: slc-proxy.cl-mirror.net
* epel: mirror.csclub.uwaterloo.ca
* rpmforge: fr2.rpmfind.net
Excluding Packages in global exclude list
Finished
Se tting up Update Process
No Packages marked for Update

Thanks for your attention.

[iseletsk]

What is the output of:
rpm -qa|grep kernel

Content of /boot/grub/grub.conf file (and is there /boot/grub/menu.lst file, and is it same as /boot/grub/grub.conf)

And what is in exclude line of /etc/yum.conf

[hieluki]

Thanks for response.

root@xxx [~]# rpm -qa|grep kernel
kernel-xen-2.6.18-294.26.1.el5.lve0.7.45
kernel-xen-2.6.18-294.17.1.el5.lve0.7.40
kernel-xen-devel-2.6.18-294.26.1.el5.lve0.7.45
kernel-xen-devel-2.6.18-338.12.1.el5.lve0.8.34
kernel-headers-2.6.18-338.12.1.el5.lve0.8.34
kernel-xen-2.6.18-338.12.1.el5.lve0.8.34
kernel-xen-devel-2.6.18-294.17.1.el5.lve0.7.40

Content of /boot/grub/grub.conf is

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You do not have a /boot partition. This means that
# all kernel and initrd paths are relative to /, eg.
# root (hd0,0)
# kernel /boot/vmlinuz-version ro root=/dev/xvda1
# initrd /boot/initrd-version.img
#boot=/dev/xvda
default=0
timeout=5
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
hiddenmenu
title CloudLinux Server (2.6.18-294.26.1.el5.lve0.7.45xen)
root (hd0,0)
kernel /boot/vmlinuz-2.6.18-294.26.1.el5.lve0.7.45xen ro root=LABEL=/ console=xvc0
initrd /boot/initrd-2.6.18-294.26.1.el5.lve0.7.45xen.img
title CloudLinux Server (2.6.18-294.17.1.el5.lve0.7.40xen)
root (hd0,0)
kernel /boot/vmlinuz-2.6.18-294.17.1.el5.lve0.7.40xen ro root=LABEL=/ console=xvc0
initrd /boot/initrd-2.6.18-294.17.1.el5.lve0.7.40xen.img
title CloudLinux Server (2.6.18-338.12.1.el5.lve0.8.34xen)
root (hd0,0)
kernel /boot/vmlinuz-2.6.18-338.12.1.el5.lve0.8.34xen ro root=LABEL=/ console=xvc0
initrd /boot/initrd-2.6.18-338.12.1.el5.lve0.8.34xen.img

and content of /boot/grub/menu.lst

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You do not have a /boot partition. This means that
# all kernel and initrd paths are relative to /, eg.
# root (hd0,0)
# kernel /boot/vmlinuz-version ro root=/dev/xvda1
# initrd /boot/initrd-version.img
#boot=/dev/xvda
default=0
timeout=5
splashimage=(hd0,0)/boot/grub/splash.xpm.gz
hiddenmenu
title CloudLinux Server (2.6.18-294.26.1.el5.lve0.7.45xen)
root (hd0,0)
kernel /boot/vmlinuz-2.6.18-294.26.1.el5.lve0.7.45xen ro root=LABEL=/ console=xvc0
initrd /boot/initrd-2.6.18-294.26.1.el5.lve0.7.45xen.img
title CloudLinux Server (2.6.18-294.17.1.el5.lve0.7.40xen)
root (hd0,0)
kernel /boot/vmlinuz-2.6.18-294.17.1.el5.lve0.7.40xen ro root=LABEL=/ console=xvc0
initrd /boot/initrd-2.6.18-294.17.1.el5.lve0.7.40xen.img
title CloudLinux Server (2.6.18-338.12.1.el5.lve0.8.34xen)
root (hd0,0)
kernel /boot/vmlinuz-2.6.18-338.12.1.el5.lve0.8.34xen ro root=LABEL=/ console=xvc0
initrd /boot/initrd-2.6.18-338.12.1.el5.lve0.8.34xen.img

Exclude line /etc/yum.conf

exclude=apache* bind-chroot courier* dovecot* exim* filesystem httpd* mod_ssl* mysql* nsd* perl* php* proftpd* pure-ftpd* ruby* spamassassin* squirrelmail*

Thanks.

[iseletsk]

In /boot/grub/grub.conf the entry for latest kernel is at the end (it should be first one).
Move this lines
title CloudLinux Server (2.6.18-338.12.1.el5.lve0.8.34xen)
root (hd0,0)
kernel /boot/vmlinuz-2.6.18-338.12.1.el5.lve0.8.34xen ro root=LABEL=/ console=xvc0
initrd /boot/initrd-2.6.18-338.12.1.el5.lve0.8.34xen.img

right under: hiddenmenu
and reboot.

[hieluki]

Thanks

The kernel is updated.

root@XXX [~]# uname -r
2.6.18-338.12.1.el5.lve0.8.34xen

root@XXX [~]# lvectl ubc status
Memory limits enabled