Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base

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Solaris – Everything you need to know before you run FSCK

Whenever a file system develops inconsistencies because some unexpected issues, the integrity of the file system needs to be verified.  UNIX has developed a very sophisticated file system integrity check ,fsck utility,  which attempts to verify that all the links and blocks are correctly tied together. This...

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VXVM 6.1 – How to Interpret veritas Configuration Daemon (vxconfigd) States from vxdctl output?

The vxdctl utility manages aspects of the state of the volume configuration daemon, vxconfigd, sets the default disk group for the system, and also sets up the boot disk group if the root disk is under Veritas Volume Manager (VxVM) control. The volboot file forms a...

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VXVM 6.1 – How to Enable vxconfigd log for deduubbing?

You can enable direct vxconfigd logging with the -x log argument, and turn it off with the -x nolog argument. Logging is disabled by default. If direct logging is enabled, the default log file is /var/vxvm/vxconfigd.log. This option can be used in conjunction with syslog |...

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VXVM 6.1 – How to Backup and Restore the VxVM DiskGroup Configuration?

Disk Group Configuration Backup : Back up the configuration of the mydg disk group to the directory /dgbackup/mydg: # vxconfigbackup -l /dgbackup/mydg mydg The vxconfigbackupd daemon automatically backs up a disk group’s new configuration to the default backup directory whenever the configuration is changed. The vxconfigbackup...

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VXVM 6.1 – How to use ctrl ( Storage Controller) option with vxassist?

To create a  volume where two enclosures are connected to a host. The first through controllers c1, c2 and the second through controllers c3, c4. The following can be used: # vxassist make vol1 1024 !ctlr:c1 results in disks from the first enclosure being excluded from the...

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