Hi,
I was wondering if it is possible to have your kernel modules be stored in a
partition different from the one on which the kernel is. The intent is to
simply have /lib/modules/`uname -r` be a symbolic link to a directory on
another disk.
I am using a 2.6 kernel and the /etc/inittab file seems to invoke
/etc/init.d/rc.udev before it mounts all the other partitions (say on other
disks). This leads to a case where udevstart (invoked from rc.udev) tries to
probe for modules that exist in a partition that hasn't been mounted yet
leading to a whole bunch of error messages.
Having the partition containing these modules be mounted before
/etc/init.d/rc.udev is invoked is not an option either since /dev hasn't
been populated yet.
Being able to point /lib/modules/`uname -r` to a directory in another
partition seems to be an easy way to "upgrade" modules in flash based
filesystems where you might not be comfortable erasing existing module files
before installing new ones for the reason that the whole process takes time
and any power failure during this time can be catastrophic. Being able to
download all your modules to a new partition and simply flip
/lib/modules/`uname -r` to point to a different directory in a new partition
for the upgrade to automatically happen seems like a nifty feature to have.
Is it possible, using /etc/init.d/rc.udev to be able to only create a subset
of the final /dev tree so that this model can be made to work?
Or maybe there is a whole different strategy on module upgrades for flash
based filesystems which, being a Linux novice, I am not aware of.
Cheers!
Vella
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