ssd migration block/unit size, tune and benchmark

[Eva Star]

Migrated to the new SSD from old:

1) How to check "ssd partition alignment" on Qubes as we do on Windows?
If need to correct it, how to do that?

2) The same for block/unit size. Need I change it on the new SSD? How to
check yes or no? How to do that if need?

3) How to check new SSD performance? Need to do this on dom0? I'm about
some tests like we have on Windows (read/write, random read/write,
different block sizes)

4) SECURITY ISSUE: Is it secure to keep the old *clone* of the drive on
old SSD with the same master table of cryptsetup and the same password?

Thanks


--
Regards

[Andrew David Wong]

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On 2016-10-24 14:45, Eva Star wrote:
> Migrated to the new SSD from old:
>
> 1) How to check "ssd partition alignment" on Qubes as we do on Windows? If need to correct it, how to do that?
>
> 2) The same for block/unit size. Need I change it on the new SSD? How to check yes or no? How to do that if need?
>

Neither of these should be necessary for a fresh Qubes installation on a new SSD, unless you're doing some kind of non-standard/custom installation, in which case you should be able to handle both with either fdisk or parted.

> 3) How to check new SSD performance? Need to do this on dom0? I'm about some tests like we have on Windows (read/write, random read/write, different block sizes)
>

Yes, this would have to be done in dom0, or using a different distro (e.g., live CD). You can find software to do this on the web or included in some distros.

> 4) SECURITY ISSUE: Is it secure to keep the old *clone* of the drive on old SSD with the same master table of cryptsetup and the same password?
>

This can be a risk under certain circumstances:

https://gitlab.com/cryptsetup/cryptsetup/wikis/FrequentlyAskedQuestions#6-backup-and-data-recovery

- --
Andrew David Wong (Axon)
Community Manager, Qubes OS
https://www.qubes-os.org
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