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How To dynamically increase ZFS swap space on Solaris and Opensolaris


These are the steps to increase the swap space without rebooting the system on a ZFS root based Solaris and Opensolaris system:

# swap -l
swapfile dev swaplo bloques libre
/dev/zvol/dsk/rpool/swap 256,2 16 2097136 2097136
# zfs set volsize=2G rpool/swap
# env NOINUSE_CHECK=1 swap -a /dev/zvol/dsk/rpool/swap $((8+2097136))
# swap -l
swapfile dev swaplo bloques libre
/dev/zvol/dsk/rpool/swap 256,2 16 2097136 2097136
/dev/zvol/dsk/rpool/swap 256,2 2097152 2097152 2097152

There are some interesting Sun courses for ZFS management:

System Administration for the Solaris 10 Operating System Part 1 (SA-200)

System Administration for the Solaris 10 Operating System, Part 2 (SA-202)

Solaris 10 ZFS Administration (SA-2290-S10)

/Sergio

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This entry was posted on August 27, 2009, 12:12 and is filed under Solaris. You can follow any responses to this entry through RSS 2.0. You can leave a response, or trackback from your own site.

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