Re: [LAD] [OT] bash vs disk activity

Hello Patrick,

> How would I track the 5 minutes of data transfer with bash?

The only reliable way on unix to ensure all data has been written to the
disk is to umount it. The "sync" (API call or program) is merely a hint
to flush filesystem buffers at the point where the call was made, but
one second later, while the sync is still running, new dirty buffers
might be generated. So you should use something along the following:

time ( mount /dev/xxx /mnt/yyy ; cp -a /whatever /mnt/yyy ; umount
/mnt/yyy )

-- 
---> Dirk Jagdmann
----> http://cubic.org/~doj
-----> http://llg.cubic.org
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