On Sun, 2 Aug 2009, Patrick O'Callaghan wrote:
On Sun, 2009-08-02 at 12:54 -0500, Mikkel L. Ellertson wrote:
> Bazooka Joe wrote:
> > Is there a way to combine these 2 commands to cut my time in half?
> >
> > VBoxManage internalcommands converttoraw file.vdi file.raw
> > then I have to run
> > dd if=file.raw of=/dev/sdb
> >
> > -thx
> >
> You can can command on the same command in several ways. It depends
> on what you put between the command.
>
> ; - always run the next command.
> && - run the second command only if the first command is successful.
> || - run the second command if the first one fails.
How is this going to reduce his total time? The commands are still
running sequentially.
i'd bump up the blocksize of that dd command. IIRC, the default
blocksize for dd is 512 bytes -- painfully small and resulting in lots
and lots of little writes. crank up the blocksize significantly and
that second command should speed up noticeably.
rday
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