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SubjectRe: Keep initrd tasks running?
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Phillip Susi wrote:
> I am confused. I thought that once the initramfs init execs the real
> init, the initramfs is freed. It can't be freed if there are processes
> that still have open files there, so that would seem to prevent any
> processes being started in the initramfs and continuing after the real
> system is booted.

AFAIK it's pivoted and then umounted, which frees it. This doesn't mean
it has to be freed.. . .

> Jeff Bailey wrote:
>> This is much more easily supported in Breezy. usplash is started at the
>> top of the initramfs (from the init-top hook) and lives until we start
>> gdm.
>> The biggest constraint is that you don't have write access to the target
>> root filesystem (since it's mounted readonly). However, /dev is a tmpfs
>> that is move mounted to the new root system. If you need to have
>> sockets open or store data, you can use that. usplash does this for its
>> socket.
>> Note that the initramfs startup sequence isn't at all similar to the old
>> initrd startups. It should be easy for you to cleanly add what you want
>> under /etc/mkinitramfs/scripts and not have to modify the
>> initramfs-tools package. /usr/share/doc/initramfs-tools/HACKING
>> contains some starter information.
>> Hope this helps!
>> Tks,
>> Jeff Bailey

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