=Comment: #0================================================= Jochen Roth <jroth.com> - 2008-02-20 03:56 EDT I sent two emails to Peter Jones and I haven't received any answer right now. For nfsroot on our diskless Cell based blades we have to create a initrd with nfsroot support. To get the dhcp root-path option working we have to add "dhcp" to the list of mount options for the root filesystem to create an appropriate initial ramdisk. Example: 10.0.0.1:/nfsroot/10.0.0.2 / nfs tcp,nolock 1 1 to 10.0.0.1:/nfsroot/10.0.0.2 / nfs tcp,nolock,dhcp 1 1 Setting the mount option "dhcp" in /etc/fstab causes the network script to fail as "dhcp" isn't a supported mount option. Remounting root filesystem in read-write mode: Unsupported nfs mount option: dhcp [FAILED] And as a consequence /etc/mtab doesn't contain the mounted root filesystem. The reboot will then fail as it tries to shutdown the network interface on an NFS root filesystem! One workaround is to create a separate fstab with "dhcp" mount option. Then we pass this fstab as an argument to mkinitrd like: mkinitrd --fstab=myfstab ... Another workaround would have been to pass the option by using --rootopts . This isn't possible because of this bug: https://bugzilla.redhat.com/show_bug.cgi?id=356371
------- Comment From joseferr.com 2008-02-20 15:08 EDT------- Our intent with this bug is to find a better solution on how dhcp root-option and mkinitrd work. mkinitrd will check /etc/fstab, in order to identify the special needs of a NFS root mount. But, letting the "dhcp" option in that file will create an incompactibility with mount and the network scripts. And, IMHO, isn't the appropriate place for it to be. Maybe, a better approach would be to use an extra argument to mkinitrd? Thank you, Jose Ferreira.
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