Duplicate ping error with network bonding driver in Linux

NOTE: Starting with version 3.0.2, the bonding driver has logic tosuppress duplicate packets, which should largely eliminate this problem.The following description is kept for reference.
         It is not uncommon to observe a short burst of duplicatedtraffic when the bonding device is first used, or after it has beenidle for some period of time.  This is [...]

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AIX 5.3 ADMCHG flag conflict

On AIX 5.3 when root changes a users password the ADMCHG flag is set in /etc/security/passwd as it is with previous versions.
When adding a new user, is after setting the initial password from root, remove the ADMCHG flag for that user from /etc/security/passwd.
This allows the user to keep the initial password until he [...]

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Broadcom NetXtreme II BCM5708 bnx2 ip checksum error

I  noticed that the amount of outgoing and incoming packets with ip checksum error on all the servers that have Boradcom NetXtreme II network card (Driver Version 1.3.29) . Which turned out to be a tcp segmentation offload problem. Looks like Broadcom BCM5708 has issues with tcp segmentation. To go away the problem I did [...]

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Setup Solaris OBP nvramrc settings for boot-device

Use format command to find out number of internal hard drive
bash-3.00# echo | formatSearching for disks…done
AVAILABLE DISK SELECTIONS:       0. c1t0d0 <LSILOGIC-LogicalVolume-3000 cyl 65533 alt 2 hd 16 sec 136>          /pci@1f,700000/pci@0/pci@2/pci@0/pci@8/LSILogic,sas@1/sd@0,0       1. c1t1d0 <LSILOGIC-LogicalVolume-3000 cyl 65533 alt 2 hd 16 sec 136>          /pci@1f,700000/pci@0/pci@2/pci@0/pci@8/LSILogic,sas@1/sd@1,0       2. c3t50060160106018CEd0 <DGC-RAID5-0207 cyl 42516 alt 2 hd 256 sec 103>          /pci@1e,600000/pci@0/pci@9/fibre-channel@0,1/fp@0,0/ssd@w50060160106018ce,0       3. [...]

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SuSE 9.0 Postfix "Cannot flush mail queue" error

Today I had a problem starting postfix mail because of tons of mails been queued up.
Checking at /var/log/mail , it was showing the following error messages
Apr  9 11:02:12 server1 postfix/postfix-script: fatal: Postfix integrity check failed!Apr  9 15:03:12 server1 postfix/postqueue[26805]: fatal: Cannot flush mail queue – mail system isApr  9 11:10:00 server1 postfix/postsuper[32458]: fatal: OPERATION INCOMPLETE [...]

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