DaemonForums  

Go Back   DaemonForums > Other Operating Systems > Other BSD and UNIX/UNIX-like

Other BSD and UNIX/UNIX-like Any other flavour of BSD or UNIX that does not have a section of its own.

Reply
 
Thread Tools Display Modes
  #1   (View Single Post)  
Old 24th December 2009
th3professor th3professor is offline
New User
 
Join Date: Dec 2009
Posts: 1
Question New linux & unix installs with old raid/lvm set-up

Hi,

I have some questions about raid & lvm. I currently have raid 5 set up via mdadm and lvm (lvm2) set up along with it, running on an old Ubuntu Studio (8.10). I need to upgrade (via fresh install) to a more recent (9.10) version of the system but am not sure what steps to take to sync the new OS install with the old raid/lvm set-up. I have an OS hard drive that is separate from my raid/lvm hard drives. I'd like to install Ubuntu Studio, Solaris and/or OpenBSD, and another *nix onto the computer. I plan on using Studio for music recording/composing purposes and another unix/linux install for normal computer uses. First things first, I'd like to get Ubuntu Studio 9.10 up and running and also working with the raid/lvm disks. How do I do that?

I have some basic ideas but don't know if I'm missing any steps.

Here are some info on my current set-ups...
Code:
# vgscan 
Reading all physical volumes.  This may take a while...
Found volume group "vg0" using metadata type lvm2
Code:
# vgdisplay 
  --- Volume group ---
  VG Name               vg0
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  6
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                3
  Open LV               3
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               931.52 GB
  PE Size               4.00 MB
  Total PE              238468
  Alloc PE / Size       238468 / 931.52 GB
  Free  PE / Size       0 / 0   
  VG UUID               q9qxE4-tp1X-PUZl-cWfE-PGI3-3y4X...
Code:
# pvscan 
PV /dev/md0   VG vg0   lvm2 [931.52 GB / 0    free]
Total: 1 [931.52 GB] / in use: 1 [931.52 GB] / in no VG: 0 [0   ]
Code:
# pvdisplay 
  --- Physical volume ---
  PV Name               /dev/md0
  VG Name               vg0
  PV Size               931.52 GB / not usable 2.75 MB
  Allocatable           yes (but full)
  PE Size (KByte)       4096
  Total PE              238468
  Free PE               0
  Allocated PE          238468
  PV UUID               Xw1LeW-LRbq-Xt0J-0XtR-fEfi-5LBk...
Code:
# df -h
/dev/mapper/vg0-vault
                      755G  293G  463G  39% /studio/vault
/dev/mapper/vg0-zone   87G  184M   83G   1% /zone
/dev/mapper/vg0-nomad
                       87G  342M   82G   1% /nomad
Code:
$ fdisk -l
Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000c177d

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1               1       60801   488384001   fd  Linux raid autodetect

Disk /dev/sdc: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000caa62

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1               1       60801   488384001   fd  Linux raid autodetect

Disk /dev/sdd: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000d3415

   Device Boot      Start         End      Blocks   Id  System
/dev/sdd1               1       60801   488384001   fd  Linux raid autodetect
Code:
$ more /etc/fstab
# /etc/fstab: static file system information.
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    defaults        0       0
# /dev/sda5
UUID=aab73c93-5c74-4252-b2db /               ext3    relatime,error
s=remount-ro 0       1
# /dev/sda1
UUID=90e2151d-168b-4918-9019 /boot           ext3    relatime     
  0       2
# /dev/sda6
UUID=a8097c76-3754-4c5a-8371 /studio/workspace ext3    relatime   
    0       2
# /dev/sda2
UUID=30DCC729DCC6 /windows        ntfs    defaults,umask=007,gid=46 0      
1
# /dev/sda7
UUID=43caaa32-d48f-414a-87b7 none            swap    sw           
  0       0
# /dev/sda8
UUID=8b3abdfd-a4cb-478d-b84d none            swap    sw           
  0       0
/dev/scd0       /media/cdrom0   udf,iso9660 user,noauto,exec,utf8 0       0
/dev/vg0/vault  /studio/vault   xfs     rw,noatime      0       0
/dev/vg0/zone   /zone   ext3    rw,noatime      0       0
/dev/vg0/nomad  /nomad  ext3    rw,noatime      0       0
Would I do the following, or am I leaving anything out?

For testing purposes (?)...
1. Boot live cd
2. Install mdadm & lvm2 (while running the live cd)
3. Run these commands:
sudo mdadm --assemble
sudo vgchange -a y

Or perhaps more precisely (?) the following, and this is during an actual OS install:

1. Install Ubuntu Studio 9.10 DVD (an alternate, not a "live" disc)
2. Install mdadm & lvm(2)
3. Enter the following commands:
$ sudo mdadm --assemble /dev/md0 --uuid=(???) /dev/sdb /dev/sdc /dev/sdd
$ sudo vgchange -a y
4. Copy old fstab file into new fstab file. (It can be backed up on another disk.)
5. Reboot

Where do I get the correct uuid for the mdadm re-assembly command?
Is including that uuid necessary?
Or is the fstab change really necessary?
Or will I need to still do some kind of "modprobe" for mdadm and/or lvm2?

I might be over-thinking some of this, I don't know, but I'd rather over than under-think it.

I'm running a 64-bit system, not sure if that matters here.

Thank you in advance for any help on this!
Reply With Quote
  #2   (View Single Post)  
Old 7th July 2010
marwin marwin is offline
New User
 
Join Date: Jul 2010
Posts: 1
Default

Hi!

I'm having a similar situation here. Did you ever figure out how to do this?

Thanks for any response!
Reply With Quote
  #3   (View Single Post)  
Old 7th July 2010
Carpetsmoker's Avatar
Carpetsmoker Carpetsmoker is offline
Real Name: Martin
Tcpdump Spy
 
Join Date: Apr 2008
Location: Netherlands
Posts: 2,243
Default

I'll just reply since no one else has:

Quote:
1. Install Ubuntu Studio 9.10 DVD (an alternate, not a "live" disc)
2. Install mdadm & lvm(2)
3. Enter the following commands:
$ sudo mdadm --assemble /dev/md0 --uuid=(???) /dev/sdb /dev/sdc /dev/sdd
$ sudo vgchange -a y
4. Copy old fstab file into new fstab file. (It can be backed up on another disk.)
5. Reboot
These instructions seem OK, except I never needed to use the --uuid option.

Note: My experience the mdadm linux software RAID is limited to recovering NAS devices such as WD MyBook, Synology, etc ...
__________________
UNIX was not designed to stop you from doing stupid things, because that would also stop you from doing clever things.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
linux compat and linux-only drivers fbsduser FreeBSD General 9 22nd January 2009 05:42 PM
dos to unix linefeeds matt Programming 10 10th September 2008 10:02 PM
Documented installs Ville FreeBSD Installation and Upgrading 1 18th July 2008 02:12 PM
Linux is copy of Unix - Says Darl McBride mfaridi Off-Topic 13 8th June 2008 08:15 PM
Failed Installs dctr OpenBSD Installation and Upgrading 23 4th June 2008 04:25 AM


All times are GMT. The time now is 02:53 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Content copyright © 2007-2010, the authors
Daemon image copyright ©1988, Marshall Kirk McKusick