I used ltsp_initrd_kit.
And I added some initial files in root file system including 'sbin/init'
and copied a number of files from /opt/ltsp/i386 of ltsp tools.
I edited linuxrc file and erased some lines related to NFS mouning and
pivot_root like below.
But I could only an error written that could not find "/sbin/init" file
I think root file system was disappeared after executing linuxrc.
What did I missing. What should I change in linuxrc file.
Thanks.
. /etc/dhcpc/dhcpcd-eth0.info
#
# If a root-path has been specified on the kernel cmdline, then use it
#
if [ -n "${RP}" ]; then
ROOTPATH=${RP}
fi
#
# Check for a root-path from the dhcp server
#
[ "${INITRD_DBG}" = "7" ] && exec /bin/sh
if [ -z "${ROOTPATH}" ]; then
[ -w /proc/progress ] && echo f >/proc/progress
echo
echo "ERROR! No root-path. Check your DHCP configuration, to make"
echo " sure that the 'option root-path' is specified"
echo
cat /etc/dhcpc/dhcpcd-eth0.info
exit 1
fi
###################################
##### erased line #################
###################################
echo "Running /sbin/init"
exec /sbin/init
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ken
Cobler
Sent: Tuesday, August 30, 2005 9:00 PM
To: [EMAIL PROTECTED]
Cc: ltsp-discuss@lists.sourceforge.net
Subject: Re: [Ltsp-discuss] I want to use a ram disk as / after network
[EMAIL PROTECTED] wrote:
>On Tuesday 30 August 2005 11:23,
[EMAIL PROTECTED]
>wrote:
>
>
>>HCK,
>>
>>just use the initrd for your ramdisk. Rather than doing a NFS mount,
>>and a pivot-root, just put all the stuff you need into your initrd,
and
>>at the end of /linuxrc, run /sbin/init.
>>
>>If you are using a 2.6 kernel, take a look at initramfs, rather than
>>initrd. It's a bit more flexible.
>>
>>Jim McQuillan
>>[EMAIL PROTECTED]
>>
>>On Sat, 27 Aug 2005, hckimm2 wrote:
>>
>>
>>>Hi
>>>
>>>I am an engineer who is making communication systems.
>>>I have a board(made by Kontron ltd, Intel CPU, currently with
diskless )
>>>that is used in compactPCI.
>>>I boot that board with network PXELINUX method and currently using
NFS.
>>>But I don't want to use NFS and I want to make and use ram disk
image.
>>>That means I want to use a ram disk as / after network booting.
>>>Currently I made a initrd by ltsp_initrd_kit.
>>>What should I have to change in 'linuxrc' file and
pxelinux.cfg/default
>>>file. And how can I make ram disk image.
>>>
>>>
>
>I'd love to hear pros/cons of using the initrd for ever, vs using the
initrd
>to unwind a root fs into ram, then pivot root to ram. I've done both.
>
>The only caveat I've got: if you unwind a usb-mem stick (even a fast
stick)
>it's s--o-- s--l--o--w-- (100s K/sec no Ms/sec!!)
>
>
initrd purpose is to load an initial filesystem in ramdisk memory. What
programs are called in that initrd is up to you (edit your linuxrc file
accordingly).
The only potential drawback I could see to using a initrd only root FS
is the initrd file could get so large that it would not all fit into
memory. To correct, it would require a special kernel built to make
initrd image as large as you need. Not an impossible problem to work
around.
The memory stick is slow because of the technology (slow writes,
slightly improved reads). Memory sticks are meant for a convenient
replacement for floppies. I have a boot version of Linux working with a
USB memory stick. It does work, but, I agree is slow. However, it
makes it very convenient to load a complete Linux OS (with GUI) on a
memory stick, go to a Windows computer that supports booting from USB
device, and boot into Linux without touching the Windows drive.
Ken Cobler
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-------------------------------------------------------
SF.Net email is Sponsored by the Better Software Conference & EXPO
September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA
Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
_____________________________________________________________________
Ltsp-discuss mailing list. To un-subscribe, or change prefs, goto:
https://lists.sourceforge.net/lists/listinfo/ltsp-discuss
For additional LTSP help, try #ltsp channel on irc.freenode.net
