[Reproducible-builds] timestamps_in_directories

[Holger Levsen]

Hi,

On Montag, 12. Oktober 2015, Santiago Vila wrote:
> Indeed. Just replace "disorderfs" by "different filesystem ordering"
> and we still have a likely reason for the differences.
 
on possible source for this variation is the kernel, Ben said on irc that it's 
possible that tmpfs from 3.16 and 4.1 is causing this.

Atm we are using:

pb-b1: 3.16
pb-b2: 4.1 (this is a bug, it should run 3.16)
pb-b5: 4.1
pb-b6: 4.1

and then the jobs build like this

1st build	2nd build
b1		b5
b1		b6
b2		b5
b2		b6
b5		b1
b5		b2
b6		b1
b6		b2

IOW: 50% of the amd64 builds take place on 4.1 kernels only, while 50% run on 
3.16 and 4.1

I could (try harder to) downgrade b2 to 3.16, which would give us 100% running 
on different kernels...


cheers,
	Holger
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