CentOS - Dec 2014 - PXE install in a boot on san with LVM environment, fails after reboot

Hello,

I need to automate installation of CentOS 7.0 using PXE and kickstart. 
My server is diskless, I'm installing CentOS on a 25GB LUN on a FC SAN 
with 4 paths. This LUN is the only one accessible by the server.

Anaconda processes successfully the installation. But on reboot, I get 
stuck on a prompt after BIOS. I think I have an issue with storage 
configuration / bootloader configuration...

I can install it using the ISO, with basic configuration. The 
/root/anaconda-ks.cfg looks like the following (I striped some part, I 
cannot copy past because I have only console access through a secured 
VPN :-/ ):
firstboot --enable
ignoredisk --only-use=mpatha,sdc,sdd,sdb,sda
bootloader --location=mbr --boot-drive=mpatha
autopart --type=lvm
clearpart --all --initlabel --drives=mpatha
%packages
@base
@core
%end

My ks.cfg template is identical (I also cannot attach it 
unfortunately?).

I tried several things like:
- put sda as boot-drive for bootloader (according to 
http://osdir.com/ml/general/2014-09/msg52181.html ), but anaconda fails 
with error that this drive cannot be found. It asks to choose another 
disk, mpatha is the only available.
- same with dm-0 (as /dev/mapper/mpatha is a symlink to /dev/dm-0) but 
anaconda also fails
- add to bootloader ? --append="rd.lvm.lv=centos/root 
rd.lvm.lv=centos/swap" ?

I also found some post on the web saying that in the ? ignoredisk ? 
mpatha mustn't be used but disk/by-id/scsi-XXXX (chapter 23.3.2 of RHEL 
7 installation guide), but I don?t know how to manage that.

Is someone ever did that kind of PXE installation, with boot on san & 
LVM, and help me in the kickstart configuration?

Any help would be highly appreciated!

Best regards,
Damien

Hello,

Please forget, I found the issue. In fact I put a wrong url in ks (url 
--url ...), so it wasn't able to DL the package.

But the time it waits before timeouting and the fact its reboots (in 
text mode) without any error message is quite hard to tshoot...

Thanks!

Damien


Le 2014-12-25 21:34, Damien Gouju a ?crit?:
> Hello,
> 
> I need to automate installation of CentOS 7.0 using PXE and kickstart.
> My server is diskless, I'm installing CentOS on a 25GB LUN on a FC SAN
> with 4 paths. This LUN is the only one accessible by the server.
> 
> Anaconda processes successfully the installation. But on reboot, I get
> stuck on a prompt after BIOS. I think I have an issue with storage
> configuration / bootloader configuration...
> 
> I can install it using the ISO, with basic configuration. The
> /root/anaconda-ks.cfg looks like the following (I striped some part, I
> cannot copy past because I have only console access through a secured
> VPN :-/ ):
> firstboot --enable
> ignoredisk --only-use=mpatha,sdc,sdd,sdb,sda
> bootloader --location=mbr --boot-drive=mpatha
> autopart --type=lvm
> clearpart --all --initlabel --drives=mpatha
> %packages
> @base
> @core
> %end
> 
> My ks.cfg template is identical (I also cannot attach it 
> unfortunately?).
> 
> I tried several things like:
> - put sda as boot-drive for bootloader (according to
> http://osdir.com/ml/general/2014-09/msg52181.html ), but anaconda
> fails with error that this drive cannot be found. It asks to choose
> another disk, mpatha is the only available.
> - same with dm-0 (as /dev/mapper/mpatha is a symlink to /dev/dm-0) but
> anaconda also fails
> - add to bootloader ? --append="rd.lvm.lv=centos/root 
> rd.lvm.lv=centos/swap" ?
> 
> I also found some post on the web saying that in the ? ignoredisk ?
> mpatha mustn't be used but disk/by-id/scsi-XXXX (chapter 23.3.2 of
> RHEL 7 installation guide), but I don?t know how to manage that.
> 
> Is someone ever did that kind of PXE installation, with boot on san &
> LVM, and help me in the kickstart configuration?
> 
> Any help would be highly appreciated!
> 
> Best regards,
> Damien