On Thu, Jun 28, 2012 at 10:06:35AM +0200, Sami Kerola wrote:
> sake@sake /home/src/util-linux ./swapon --show --bytes
> NAME TYPE SIZE USED PRIO
> /dev/dm-0 partition 7999582208 0 -1
>
> sake@sake /home/src/util-linux ./lsblk -I 252 --bytes # why I did not
> get output?
> sake@sake /home/src/util-linux ./lsblk --bytes | grep 252
> | `-cryptswap1 (dm-0) 252:0 0 7999586304 0 crypt [SWAP]
>
> Still differs? But which one is right?
Both is right, because size of swap area != size of the device. The
first page (e.g. 4096 bytes) on the device is swap header. The area
could be also reduced by bad blocks or by mkswap <size> option.
7999586304 - 7999582208 = 4096
Karel
--
Karel Zak <kzak@xxxxxxxxxx>
http://karelzak.blogspot.com
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