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Re: apt-get and /usr remount (was Re: ReiserFS on blank hard drive)

On Fri, May 18, 2001 at 02:01:15AM -0300, Peter Cordes wrote:
> On Thu, May 17, 2001 at 04:39:49AM -0800, Ethan Benson wrote:
> > for example when you upgrade libc every bash process must be killed
> > before remounting of /usr is possible since it mmaps some locale file
> > (IME anyway).  
>  (Almost) everything mmap()s /lib/libc.so.6.  That's probably more important

this is true, but not relevant to remounting /usr since /lib/libc is
not in /usr ;-)

> if even read-only mappings of deleted files prevent remounting ro.  (this
> requirement makes sense, because you have to leave the FS with the file
> deleted and the blocks freed, so nothing would be left to back the mapping.
> The only way to support this would be ugly hacks, I think.)

just `grep deleted /proc/*/maps' after upgrading libc sometime ;-)

Ethan Benson

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