Re: What is the correct way to reuse an existing RAID/LVM configuration

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On 2013-09-04 09:26, Vratislav Podzimek wrote:
On Thu, 2013-08-22 at 20:05 +0200, Anders Blomdell wrote:
On a system with the following disk layout:


    Disk /dev/sda: 2000.4 GB, 2000398934016 bytes, 3907029168 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 4096 bytes
    I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    Disk label type: dos
    Disk identifier: 0x83dae9c4

       Device Boot      Start         End      Blocks   Id  System
    /dev/sda4            2048  3907029167  1953513560    5  Extended
    /dev/sda5            4096     4198399     2097152   fd  Linux raid autodetect
    /dev/sda6         4200448  3907029167  1951414360   fd  Linux raid autodetect

    Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes, 3907029168 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 4096 bytes
    I/O size (minimum/optimal): 4096 bytes / 4096 bytes
    Disk label type: dos
    Disk identifier: 0x88b817cf

       Device Boot      Start         End      Blocks   Id  System
    /dev/sdb4            2048  3907029167  1953513560    5  Extended
    /dev/sdb5            4096     4198399     2097152   fd  Linux raid autodetect
    /dev/sdb6         4200448  3907029167  1951414360   fd  Linux raid autodetect

    PV         VG   Fmt  Attr PSize PFree
    /dev/md1   vg0  lvm2 a--  1.82t 1.63t

    LV   VG   Attr      LSize  Pool Origin Data%  Move Log Copy%  Convert
    opt  vg0  -wi-a---- 60.00g
    root vg0  -wi-a---- 60.00g
    src  vg0  -wi-d---- 60.00g
    swap vg0  -wi-a---- 16.00g

I'm trying to kickstart a Fedora-19 system with the following partitioning:

    part raid.0a --onpart=sda5 --noformat
    part raid.0b --onpart=sdb5 --noformat
    raid /boot --fstype=ext4 --level=1 --device=md0 raid.0a raid.0b

    part raid.1a --onpart=sda6 --noformat
    part raid.1b --onpart=sdb6 --noformat
    raid pv.0 --level=1 --device=md1 raid.1a raid.1b
I think you'd need to use '--useexisting' and '--noformat' when
specifying raids and drop 'part' lines for raid members.

Also the 'volgroup' command shouldn't have PV members listed when using
'--useexisting'.

See:
http://fedoraproject.org/wiki/Anaconda/Kickstart#raid
http://fedoraproject.org/wiki/Anaconda/Kickstart#volgroup

OK, the following seem to work. The weird :md* names are for not need to have one
kickstart file for each machine, without it $(hostname): will be prepended to the
raid device name:

part raid.0a --fstype="mdmember" --noformat --onpart=sda2 # :md2
part raid.0b --fstype="mdmember" --noformat --onpart=sdb2 # :md2
part raid.1a --fstype="mdmember" --noformat --onpart=sda3 # :md3
part raid.1b --fstype="mdmember" --noformat --onpart=sdb3 # :md3

raid /boot --device=:md2 --fstype="ext4" --level=1 --useexisting --label="/boot"
raid pv.0 --device=:md3 --fstype="lvmpv" --level=1 --noformat --useexisting

volgroup vg0 --noformat --pesize=32768 --useexisting pv.0

logvol /        --fstype="ext4" --useexisting --label="/"        --name=root --vgname=vg0
logvol /opt     --fstype="ext4" --useexisting --label="/opt"     --name=opt  --vgname=vg0
logvol /usr/src --fstype="ext4" --useexisting --label="/usr/src" --name=src  --vgname=vg0 --noformat
logvol swap     --fstype="swap" --useexisting                    --name=swap --vgname=vg0

Regards

Anders Blomdell
--
Anders Blomdell                  Email: anders.blomdell@xxxxxxxxxxxxxx
Department of Automatic Control
Lund University                  Phone:    +46 46 222 4625
P.O. Box 118                     Fax:      +46 46 138118
SE-221 00 Lund, Sweden

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