Re: Recommendation on partition sizes

[Pascal Hambourg <pascal@plouf.fr.eu.org>]

Le 04/11/2018 à 20:56, Stefan Monnier a écrit :
> > > I use LVM volumes for my swap space, which is yet another option, one
> > > that can be grown and shrunk easily, online.
> > You can resize a logical volume online, but AFAIK you cannot resize a swap
> > area online (while in use) ;
>
> Indeed, in the general case you'll need to do it like:
>
>      lvcreate --name tmpswap --size NNg <VG>
>      mkswap /dev/<VG>/tmpswap
>      swapon /dev/<VG>/tmpswap
>      swapoff /dev/<VG>/swap
>      lvresize --size +2g /dev/<VG>/swap
>      mkswap /dev/<VG>/swap
>      swapon /dev/<VG>/swap
>      swapoff /dev/<VG>/tmpswap
>      lvremove /dev/<VG>/tmpswap

Or you can just delete the old swap and rename the new one.

      lvcreate --name newswap --size NNg <VG>
      mkswap /dev/<VG>/newswap
      swapon /dev/<VG>/newswap
      swapoff /dev/<VG>/swap
      lvremove /dev/<VG>/swap
      lvrename <VG> newswap swap

> [ Sadly --resizefs doesn't work on a swap partition, AFAICT.  ]

Because there is no swap resizing tool.