Tag cloud

JBoss (16) Fedora (5) Linux (4) Red Hat (4) JON (3) command line (3) 4.3 (2) JEE (2) JVM (2) Java (2) KVM (2) Oracle (2) Portal (2) Weblogic (2) installation (2) vs (2) /boot partition (1) Add-ons (1) Apache (1) Bundles (1) Business model (1) Byteman (1) CLASSPATH (1) EAP (1) EPP (1) Eclipse (1) Failover (1) Gnome (1) JAVA_OPTS (1) JBDS (1) JBoss Tools (1) JBossON (1) JConsole (1) JDK (1) JMS (1) JVM options (1) KDE (1) MBean (1) Network (1) Open Source (1) RHQ (1) Red Hat subscription (1) Thunderbird (1) Troubleshooting (1) Virtulization (1) WS (1) Webservices (1) Wireshark (1) classloading (1) clustering (1) comparison (1) debug (1) deployment (1) disable SELinux (1) disksize (1) error (1) fun (1) jboss.org (1) log (1) log4j (1) lvm (1) messaging (1) multiple WARs (1) patent FOSS (1) performance tuning (1) provisionning (1) scripting (1) services (1) switch (1) troll (1) upgrade (1) video (1) war (1) webapp (1) yum (1)

16 September 2010

Howto resize a partition

Command line:
[root]# df -m
[root]# lvm
(starts lvm command line)
Within lvm command line:
lvm> lvdisplay

-- resize swap to 1G
lvm> lvresize /dev/vg_f13v1/lv_swap --size 1G

-- after the operation your LV size is:( LV Size  1.00 GiB)
lvm> lvdisplay

--now add all remaining free space
lvresize -L +1.6GB /dev/vg_f13v1/lv_root

--trigger the resizing process
[root@f13-jon jon]# resize2fs -p /dev/vg_f13v1/lv_root

06 September 2010

sudo package-cleanup --cleandupes

yum downgrade libvirt\*

http://qemu-buch.de/d/Speichermedien/_Festplatten-Images_anderer_Virtualisierungssoftware/_VMware_Workstation

02 September 2010

virt-manager fails to reboot guests (no solution found yet)

https://bugzilla.redhat.com/show_bug.cgi?id=496537
https://bugzilla.redhat.com/show_bug.cgi?id=505719
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/368962

Additional info:

1. Error persists even if selinux is disabled.

2. Error message in log :

tail -F /var/log/messages

libvirtd: 23:19:34.302: error : this function is not supported by the
hypervisor: virDomainReboot

tail -F /var/log/libvirt/qemu/guest.log

Nothing.

2. Shutdown does nothing , guest still running, no error message.

3. Force off -> error message / warning -> restart guest is only option.

01 September 2010

Howto debug in Fedora

If you happen to run into any sort of system error, or some application is not working properly within Fedora just check on the aggregated log file with the following command:
tail -F /var/log/messages