6

I am copying huge file from NFS mount using dd:

dd if=/mnt/nfs/image.img of=/dev/sda

I need to limit the speed of reading from NFS. How can I achieve it? The only precondition is to use some easy compilable utility in order to put into my custom ram-only live linux distro.

Improve this question
2
  • 1
    Forget about dd. It would be simpler, less error-prone and faster to run cat /mnt/nfs/image.img >/dev/sda
    – Gilles 'SO- stop being evil'
    Aug 25, 2015 at 23:48
  • Still I need to limit the speed becauseI have around 40 similar boxes copying from NFS and image is 2GB, thus killing NFS box and network.
    – Pablo
    Aug 26, 2015 at 5:58

1 Answer 1

Reset to default
6

You could use pv:

</mnt/nfs/image.img pv -L 5m >/dev/sda

The -L flag limits the throughput to 5 megabytes per second. pv also writes to the stdout so you have to redirect to the target with >.

Improve this answer
1
  • @Gilles Sure, thanks for the edit. =) Sometimes I think around too many corners, without seeing the obvious..
    – chaos
    Aug 26, 2015 at 5:29

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .