Viewing Swap and Dump Information

To view the swap area, use the swap -l command. For example:

$ swap -l
swapfile                   dev    swaplo   blocks     free
/dev/zvol/dsk/rpool/swap 145,2        16 16646128 16646128

To view the dump configuration, use the dumpadm command. For example:

$ dumpadm
Dump content: kernel pages
Dump device: /dev/zvol/dsk/rpool/dump (dedicated)
Savecore directory: /var/crash/
Savecore enabled: yes
Save compressed: on

You can also manually create swap or dump volumes in a non-root pool. After creating a dump device on the non-root pool, you must also reset it by running the dump -d command.

In the following example, a dump device is created on the non-root pool bpool.

$ zfs create -V 10g bpool/dump2
$ dumpadm -d /dev/zvol/dsk/bpool/dump2
Dump content      : kernel with ZFS metadata
Dump device       : /dev/zvol/dsk/bpool/dump2 (dedicated)
Savecore directory: /var/crash
Savecore enabled  : yes
Save compressed   : on