problem when using livecd-iso-to-pxeboot

[Jiang Jim]

I want to pxe a official CentOS-6.3-x86_64-LiveCD.iso to other servers.
I face to some problem, I use livecd-iso-to-pxeboot to build a tftpboot/.

I can get vmlinuxz0 and initrd0.img

This is my pxelinux.cfg/default

DEFAULT pxeboot
TIMEOUT 20
PROMPT 0
LABEL pxeboot
        KERNEL livecd/vmlinuz0
        APPEND rootflags=loop initrd=livecd/initrd0.img
root=live:/CentOS-6.3-x86_64-LiveCD.iso rootfstype=auto ro liveimg
nodiskmount nolvmmount  rhgb vga=791 rd.luks=0 rd.md=0 rd.dm=0
rd.live.check
ONERROR LOCALBOOT 0

But someting wrong in root section

cannot open root device "live:/CentOS-6.3-x86_64-LiveCD.iso"

I want to find out where CentOS-6.3-x86_64-LiveCD.iso It put into initrd0.img

I extract the content of initrd0.img, but when I extract coip img,
700mb content become 21m

I can't find where the   CentOS-6.3-x86_64-LiveCD.iso is.

Then I found the code of livecd-iso-to-pxeboot

( cd "$ISODIRNAME" && echo "$ISOBASENAME" | cpio -H newc -L -o ) |
  gzip -9 |
  cat $CDMNT/isolinux/initrd0.img - > tftpboot/initrd0.img

I can't understand why this commend is using cat to put two file,
initrd and iso together.

[Urs Beyerle]

Hi,

I don't have any problem on Scientific Linux (SL). Which should be more or less the same es CentOS. Does this HowTo help?

http://www.livecd.ethz.ch/diskless.html

Urs

On 04/24/2013 03:12 PM, Jiang Jim wrote:
> I want to pxe a official CentOS-6.3-x86_64-LiveCD.iso to other servers.
> I face to some problem, I use livecd-iso-to-pxeboot to build a tftpboot/.
>
> I can get vmlinuxz0 and initrd0.img
>
> This is my pxelinux.cfg/default
>
> DEFAULT pxeboot
> TIMEOUT 20
> PROMPT 0
> LABEL pxeboot
>          KERNEL livecd/vmlinuz0
>          APPEND rootflags=loop initrd=livecd/initrd0.img root=live:/CentOS-6.3-x86_64-LiveCD.iso rootfstype=auto ro liveimg nodiskmount nolvmmount  rhgb vga=791 rd.luks=0rd.md  http://rd.md=0rd.dm  http://rd.dm=0  rd.live.check
> ONERROR LOCALBOOT 0
>
> But someting wrong in root section
>
> cannot open root device "live:/CentOS-6.3-x86_64-LiveCD.iso"
>
> I want to find out whereCentOS-6.3-x86_64-LiveCD.iso It put into initrd0.img
>
> I extract the content of initrd0.img, but when I extract coip img, 700mb content become 21m
>
> I can't find where the  CentOS-6.3-x86_64-LiveCD.iso is.
>
> Then I found the code of livecd-iso-to-pxeboot
>
> ( cd "$ISODIRNAME" && echo "$ISOBASENAME" | cpio -H newc -L -o ) |
>    gzip -9 |
>    cat $CDMNT/isolinux/initrd0.img - > tftpboot/initrd0.img
>
> I can't understand why this commend is using cat to put two file, initrd and iso together.
>
> --
> livecd mailing list
> [e-mail]
> https://admin.fedoraproject.org/mailman/listinfo/livecd

[Gareth]

http://www.livecd.ethz.ch/build.html

On Thu, Apr 25, 2013 at 5:52 PM, Urs Beyerle wrote:
> Hi,
>
> I don't have any problem on Scientific Linux (SL). Which should be more or
> less the same es CentOS. Does this HowTo help?
>
> http://www.livecd.ethz.ch/**diskless.htmlhttp://www.livecd.ethz.ch/diskless.html
>     Urs
>
>
>
> On 04/24/2013 03:12 PM, Jiang Jim wrote:
> > I want to pxe a official CentOS-6.3-x86_64-LiveCD.iso to other servers.
> > I face to some problem, I use livecd-iso-to-pxeboot to build a tftpboot/.
> >
> > I can get vmlinuxz0 and initrd0.img
> >
> > This is my pxelinux.cfg/default
> >
> > DEFAULT pxeboot
> > TIMEOUT 20
> > PROMPT 0
> > LABEL pxeboot
> >          KERNEL livecd/vmlinuz0
> >          APPEND rootflags=loop initrd=livecd/initrd0.img
> > root=live:/CentOS-6.3-x86_64-**LiveCD.iso rootfstype=auto ro liveimg
> > nodiskmount nolvmmount  rhgb vga=791 rd.luks=0rd.md  http://rd.md=
> > 0rd.dm  http://rd.dm=0  rd.live.check
> >
> > ONERROR LOCALBOOT 0
> >
> > But someting wrong in root section
> >
> > cannot open root device "live:/CentOS-6.3-x86_64-**LiveCD.iso"
> >
> > I want to find out whereCentOS-6.3-x86_64-LiveCD.**iso It put into
> > initrd0.img
> >
> > I extract the content of initrd0.img, but when I extract coip img, 700mb
> > content become 21m
> >
> > I can't find where the  CentOS-6.3-x86_64-LiveCD.iso is.
> >
> > Then I found the code of livecd-iso-to-pxeboot
> >
> > ( cd "$ISODIRNAME" && echo "$ISOBASENAME" | cpio -H newc -L -o ) |
> >    gzip -9 |
> >    cat $CDMNT/isolinux/initrd0.img - > tftpboot/initrd0.img
> >
> > I can't understand why this commend is using cat to put two file, initrd
> > and iso together.
> >
> > --
> > livecd mailing list
> > [e-mail]
> > https://admin.fedoraproject.**org/mailman/listinfo/livecdhttps://admin.fedoraproject.org/mailman/listinfo/livecd
>
> --
> livecd mailing list
> [e-mail]
> https://admin.fedoraproject.**org/mailman/listinfo/livecdhttps://admin.fedoraproject.org/mailman/listinfo/livecd