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66 lines
2.1 KiB
66 lines
2.1 KiB
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 |
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From: Robert Marshall <rmarshall@redhat.com> |
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Date: Mon, 16 Mar 2015 16:34:51 -0400 |
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Subject: [PATCH] Update info with grub.cfg netboot selection order (#1148650) |
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Added documentation to the grub info page that specifies the order |
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netboot clients will use to select a grub configuration file. |
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Resolves rhbz#1148650 |
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--- |
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docs/grub.texi | 42 ++++++++++++++++++++++++++++++++++++++++++ |
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1 file changed, 42 insertions(+) |
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diff --git a/docs/grub.texi b/docs/grub.texi |
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index 6b112c18804..ef09c832482 100644 |
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--- a/docs/grub.texi |
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+++ b/docs/grub.texi |
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@@ -2414,6 +2414,48 @@ grub-mknetdir --net-directory=/srv/tftp --subdir=/boot/grub -d /usr/lib/grub/i38 |
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Then follow instructions printed out by grub-mknetdir on configuring your DHCP |
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server. |
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+The grub.cfg file is placed in the same directory as the path output by |
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+grub-mknetdir hereafter referred to as FWPATH. GRUB will search for its |
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+configuration files in order using the following rules where the appended |
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+value corresponds to a value on the client machine. |
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+ |
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+@example |
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+@group |
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+@samp{(FWPATH)}/grub.cfg-@samp{(UUID OF NIC)} |
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+@samp{(FWPATH)}/grub.cfg-@samp{(MAC ADDRESS OF NIC)} |
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+@samp{(FWPATH)}/grub.cfg-@samp{(IPv4 OR IPv6 ADDRESS)} |
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+@samp{(FWPATH)}/grub.cfg |
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+@end group |
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+@end example |
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+ |
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+The client will only attempt to look up an IPv6 address config once, however, |
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+it will try the IPv4 multiple times. The concrete example below shows what |
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+would happen under the IPv4 case. |
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+ |
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+@example |
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+@group |
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+UUID: 7726a678-7fc0-4853-a4f6-c85ac36a120a |
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+MAC: 52:54:00:ec:33:81 |
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+IPV4: 10.0.0.130 (0A000082) |
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+@end group |
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+@end example |
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+ |
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+@example |
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+@group |
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+@samp{(FWPATH)}/grub.cfg-7726a678-7fc0-4853-a4f6-c85ac36a120a |
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+@samp{(FWPATH)}/grub.cfg-52-54-00-ec-33-81 |
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+@samp{(FWPATH)}/grub.cfg-0A000082 |
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+@samp{(FWPATH)}/grub.cfg-0A00008 |
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+@samp{(FWPATH)}/grub.cfg-0A0000 |
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+@samp{(FWPATH)}/grub.cfg-0A000 |
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+@samp{(FWPATH)}/grub.cfg-0A00 |
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+@samp{(FWPATH)}/grub.cfg-0A0 |
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+@samp{(FWPATH)}/grub.cfg-0A |
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+@samp{(FWPATH)}/grub.cfg-0 |
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+@samp{(FWPATH)}/grub.cfg |
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+@end group |
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+@end example |
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+ |
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After GRUB has started, files on the TFTP server will be accessible via the |
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@samp{(tftp)} device. |
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