Re: ddrescue constantly freezing on healthy drives

[Chevy Bullido]

Thank you, Antonio! That makes a lot of sense! I'll try the -D switch to
test it out👍

Btw, where are you from? Because Antonio Díaz sounds very Spanish. I'm from
Madrid 😄

On Tue, 24 Jan 2023 at 16:44, Antonio Diaz Diaz <antonio@gnu.org> wrote:

> Hello Chevy,
>
> Chevy Bullido wrote:
> > During all these years, I've noticed that when cloning even healthy
> drives,
> > the cloning process freezes for a few seconds (6, 10, 14...) and after it
> > keeps going like nothing happened. Is this normal? Or is something that
> I'm
> > doing wrong?
>
> It may be the interaction between caching and different speed of read and
> write. Maybe read is faster than write, the kernel caches writes until the
> write buffer is full. Then ddrescue has to wait in a write call until the
> cached data is written to the output device.
>
> You may try direct access (-D, --odirect) to verify this:
>
>    ddrescue -vD -P8 -f /dev/sdc /dev/sdd cloneTeresaFinal.log
>
> > Thank you for your time and for this amazing app
>
> You are welcome. :-)
>
> Antonio.
>