[ale] LVM, Software RAID (File system)

[David Corbin]

Keith Hopkins wrote:

> Yeah Denny!  Nice diag....let me see if I can add a little to it....
>
> Denny Chambers wrote:
>
>> ********************************************
>> **------- Files and Directories ----------**
>> ********************************************
>> **----------- File System ----------------**
>> ********************************************
>> **----------- Logical Volumes ------------**
>> ********************************************
>> **------------ Volume Groups -------------**
>> ********************************************
>> **---------- Physical Volumes ------------**
>> ********************************************
>> **------------ Raid Layer ----------------**
>> ********************************************
>> * disk | disk | disk | disk | disk | disk **
>> ********************************************
>
>
> 1) Build your disks into a RAID.
> 2) pvcreate on your RAID device (/dev/md?)
>     pvcreate PhysicalVolume
>     pvcreate /dev/md0
>    If pvcreate complains about the partition type on /dev/md?, then 
> your LVM tools are too old.  Download/compile a newer set from 
> sistina.com.
> 3) vgcreate a Volume Group
>     vgcreate VolumeGroupName PhysicalVolume
>     vgcreate vg00 /dev/md0
>    This creates the directory /dev/vg00 and a "group" file under that 
> directory.
> 4) lvcreate Logical Volumes as needed.  I split up my disk's 
> opt,var,usr,tmp (/home is off on a NFS server).  It is probably a bad 
> idea to try and put /boot or / (slash) on LVM....that would be one 
> more layer of complexity you don't need should bad things ever happen.
>    HP-UX defaults to names like lvol1, lvol2, but I like more 
> descriptive names, lvvar, lvusr, lv....
>     lvcreate --size LogicalVolumeSize[kKmMgGtT] --name 
> LogicalVolumeName VolumeGroupName
>     lvcreate --size 1.5G --name lvusr vg00
> 5) mkfs/mkreiserfs/mk.xfs your favorite file systems on the Logical 
> Volume.
>     mkreiserfs device
>     mkreiserfs /dev/vg00/lvtmp
> 6) mk mount points, mount the puppies, put the entries in your fstab, 
> done.
>
>   Since you are building LVM on top of RAID, I'd suggest you ignore 
> any references to striping in the LVM commands and let RAID do the 
> striping for you.
>
>   Check out the resizing abilities of Logical Volumes, Volume Groups 
> and the ability to do Snapshots for backups.
>   vgimport and vgexport are handy for portable disk drives.
>
Thanks.   Here's an additional (half-related) question. I'm a Debian 
user, and I'll be installing Debian 3.0 (in case that affects the 
answer).  Is ReiserFS the best available journaling system?  Is it 
mature/stable?   What about a pointer to a file-system comparison?

Thhanks



---
This message has been sent through the ALE general discussion list.
See http://www.ale.org/mailing-lists.shtml for more info. Problems should be 
sent to listmaster at ale dot org.