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manuel1139
n00b
Joined: 05 Mar 2008
Posts: 8
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 Posted: Mon Nov 09, 2009 10:13 pm Post subject: Booting Gentoo with kernel flag for different fstab |
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Dear Gentoo Users,
I have set up a rather special configuration:
I build a Gentoo machine that may either be bootet physically on the system (default fstab) or via
VMWare in a NFS mount environment (second fstab9 . Now I am looking for a way to select the appropriate
fstab during kernel time. Any ideas? Should initrd work here?
Best Regards,
Maneul |
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ToeiRei
Veteran
Joined: 03 Jan 2005
Posts: 1191
Location: Austria
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| Posted: Tue Nov 10, 2009 7:36 am Post subject: |
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You can read the kernel commandline from /proc:
| Quote: | yellowstone ~ # cat /proc/cmdline
root=/dev/ram0 real_root=/dev/sdb7 init=/linuxrc dosata doscsi
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So you could do an init-script that adjusts the fstab accordingly. If it's done at an early boot stage you could be successful. But I am afraid, you won't be able to change the rootfs that fast because it has to be mounted first to gain access to the file...
Rei
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