[Voyage-linux] package installation on ro filesystem

[Jeff Ramin]

Thanks.

I should clarify - the only packages being installed are those that I have
written, so I know which directories the actual software needs to be 
writable.

My question was really: which dirs does apt (or dpkg) need to be writable?


On 02/25/2011 09:58 AM, Gustin Johnson wrote:
> It depends on the package.  Usually everything under /usr and /var
> which is pretty much most of the system.  Apt uses /var
> (/var/cache/apt).  Depending on the package, the common locations are
> /usr/lib /usr/share, /usr/bin, /usr/sbin, kernels also need to write
> to /boot.  Depending on the where the package stores it's
> configuration files you will probably need /etc as well.
>
> The obvious question to me is why can you not remount-rw dynamically?
>
> The other question I would ask is webmin really a requirement for
> system updates?  If so the ideal approach in my mind is trigger the
> remount-r? scripts from webmin.  I have not used webmin in close to a
> decade, but I seem to remember it being easy to trigger scripts from
> webmin (ie. have a button that runs remount-rw/ro or have it do that
> before updating).
>
> If none of those are options then you may be easier to simply prevent
> the machine from going into ro mode, which is trivial to do.  My dev
> box is like this (though I still can run remount-ro manually to test
> my customizations).

-- 
Jeff Ramin
Software Engineer
Singlewire Software
2601 W Beltline Hwy #510
Madison, WI 53713

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