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Friday, November 12, 2010

Crash Dump

The hardware watchdog mechanism can automatically reboot the system in case the system hangs. This can be done with or without first generating an automated crash dump file. As superuser, do one of the following:


•To reboot without generating an automated crash dump file, type:


# eeprom error-reset-recovery=boot



•To reboot and generate an automated crash dump file, type:


# eeprom error-reset-recovery=sync

Wednesday, November 10, 2010

Adding SWAP space in ZFS Root filesystem

If you want additional space
# zfs create -V 2G rpool/swap1
# swap -a /dev/zvol/dsk/rpool/swap1
# swap -l


If you want to delete old swap space and add new one

# swap -d /dev/zvol/dsk/rpool/swap
# swap -l (To verify old swap is deleted)
# zfs set volsize=4G rpool/swap
# swap -a /dev/zvol/dsk/rpool/swap
# swap -l
Welcome to the UNIX world