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What ZFS swap and dump features are included?

April 26, 2017dump features included swap ZFs

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What ZFS swap and dump features are included?

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• During an initial installation or a live upgrade from a UFS root file system, a swap device is created on a ZFS volume in the ZFS root pool. For example: zfs list NAME USED AVAIL REFER MOUNTPOINT mpool 6.81G 1.24G 19K /mpool mpool/ROOT 5.81G 1.24G 18K /mpool/ROOT mpool/ROOT/ZFSbe 5.81G 1.24G 5.81G mpool/dump 516M 1.24G 516M – mpool/swap 514M 1.67G 82.5M – The swap volume size that is created during an initial installation is based on 1/2 the size of physical memory, but is generally in the 512 Mbyte to 2 Gbyte range. Swap volume size is adjustable during an initial install and after any installation. For example: # swap -l swapfile dev swaplo blocks free /dev/zvol/dsk/rpool/swap 253,3 16 8257520 8257520 • During an initial installation or a live upgrade from a UFS root file system, a dump device is created on a ZFS volume in the ZFS root pool. The dump device size is calculated by the kernel based on dumpadm information and the size of physical memory. Dump device size is adjustable