On Mon, 2010-02-22 at 08:04 +1300, Daniel Reurich wrote: > On Sun, 2010-02-21 at 18:14 +0100, martin f krafft wrote: > > also sprach Daniel Reurich <dan...@centurion.net.nz> [2010.02.19.0351 > > +0100]: > > > But if a generated 'system uuid' value (I just suggested the root fs > > > UUID because it would be highly unlikely to be unchanged, and nobody > > > would be likely to fiddle with it) was copied into a file > > > called /etc/system_uuid and copied into the initrd, then we could add > > > put into mdadms hook script in initramfs-tools, to verify and update the > > > homehost variable in the boot time required raid volumes when ever a new > > > initrd is installed. (This generally happens on debian whenever a > > > kernel is installed and mdadm is installed or upgraded. > > > > Neil's point is that no such value exists. The root filesystem UUID > > is not available when the array is created. And updating the > > homehost in the RAID metadata at boot time would defeat the purpose > > of homehost in the first place. > > I said copy > > I meant to say: I said copy it into a file that get's stored in the initrd image which can be used for the homehost in mdadm auto-detection of root raid.
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