Swap on ZFS

[Rolf Nielsen]

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On 2014-05-07 06:37, Andrew Berg wrote:
> On 2014.05.06 23:20, Rolf Nielsen wrote:
>> If I want to talk to my mother, I call my mother and talk to her.
>> I don't call my sister and have her call my mother and relay
>> everything. And for the same reason, I don't see why I should put
>> a filesystem or swap on a volume on a filesystem.
> By that logic, you should talk to her in person and not relay your
> voice over the phone.
Unfortunately she lives 450 kilometres away.
> 
> zvols are far more flexible than partitions and have the added
> benefit of COW (cheap snapshots and clones anyone?) and checksums 
> underneath. Instantly getting more space in your zpool by cutting 
> down unneeded swap would be quite nice.

What would be the point of COW, snapshots and clones of swap?

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