Linux includes a bonding driver that allows multiple network interfaces to be merged into a single logical (bonded) interface. Linux bonding is  also more generically known as channel bonding, NIC bonding or Ethernet bonding.  The type of bonding can be configured at the bonding driver load time. Broadly speaking, the bonded network interfaces can be [...]

  Ever encounter the dreaded Linux server that does not boot back up after a reboot?  Here is how to rescue a Linux server from the grub prompt or from a rescue disk and mount the file systems so you can at least determine what went wrong.   Method 1: Boot To Single User You will need the root [...]

SYMPTOM br> Repeated errors in /var/log/messages bash-2.05b# tail /var/log/messages Aug 16 15:47:26 hostx kernel: SCSI disk error : host 0 channel 0 id 101 lun 0 return code = 10000 Aug 16 15:47:26 hostx kernel: I/O error: dev 44:a1, sector 16 Aug 16 15:47:26 hostx kernel: SCSI disk error : host 0 channel 0 id [...]

How to Find Blade Frame WWN bash-2.05b# hostname hostx bash-2.05b# grep “pServer Agent” /opt/panmgr/bin/console.log 05/19/2007:15:06:12:SGT:pServer Agent hosty/p15 Version 3.2.5 (build 744) Ssh root@hosty 192.168.21.114 hosty-c1 cb1 control-blade-A 192.168.21.116 hosty-c2 cb2 control-blade-B hosty-c1 cd /proc/scsi/qla2300 grep “scsi-qla1-hcadapter” * 3:scsi-qla0-adapter-node=200000e08b0fa050; 3:scsi-qla0-adapter-port=210000e08b0fa050; 7:scsi-qla2-adapter-node=200000e08b0f5650; 7:scsi-qla2-adapter-port=210000e08b0f5650; hosty-c2 3:scsi-qla0-adapter-node=200000e08b0ff66e; 3:scsi-qla0-adapter-port=210000e08b0ff66e; 7:scsi-qla2-adapter-node=200000e08b0fc46f; 7:scsi-qla2-adapter-port=210000e08b0fc46f; hostp 192.168.148.110 hostp-c1 cb1 control-blade-A 192.168.148.112 hostp-c2 cb2 control-blade-B [...]

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