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Bug#838503: debian-installer: mdadm should not start syncing RAID1 arrays at full speed during installation

On Fri, Dec 07, 2018 at 01:17:43AM +0100, Cyril Brulebois wrote:
>Steve McIntyre <steve@einval.com> (2018-12-06):
>> On Sat, Jun 24, 2017 at 09:01:49PM +0200, Cyril Brulebois wrote:
>> >I'm not sure it would be a good idea to stick a hardcoded value there,
>> >even if we were to lower the available bandwidth… Too many different
>> >cases, be it about actual hardware, disk sizes, etc.
>> 1000 is a nice small number, which I think might make sense as a
>> default *while* we're installing. Once the installer has finished and
>> the system is rebooted, all will go back to normal. Hell, we could
>> even expose this value via debconf for expert (and preseed) if needed.
>Why is that suddenly needed anyway? Our “joyful” IRC participant
>mentioned regressions compared to older releases and I don't see why
>that would be the case.

I've no idea why he things this is a regression. But this is something
we should probably change anyway - installing on RAID is pointlessly
slow here unless you know how to work around it. And it's been that
way since ~forever.

Steve McIntyre, Cambridge, UK.                                steve@einval.com
"I've only once written 'SQL is my bitch' in a comment. But that code 
 is in use on a military site..." -- Simon Booth

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