LinuxQuestions.org
Go Job Hunting at the LQ Job Marketplace
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Distributions > Slackware
User Name
Password
Slackware This Forum is for the discussion of Slackware Linux.

Notices

Reply
 
LinkBack Search this Thread
Old 12-18-2007, 02:23 PM   #1
petcherd
Member
 
Registered: Dec 2006
Location: Portland, OR - USA
Distribution: Formerly Slackware; now RH, SuSE, Debian/Ubuntu, & Asianux
Posts: 55

Rep: Reputation: 15
Huge piles of disk with LVM and/or RAID - GPT/GUID??


I want to hang a hardware array of about 9 TB of storage on a SlackWare 12 server, but I'm using SCSI to connect to the disks.

I know that SCSI will not let me allocate more than 2 TB per LUN. I also know that LVM and software RAID will let me combine a few pieces of storage into a single manageable unit. I can't seem to find what the limits of this combination might be, but I've asked that question over on the server forum.

I also heard that 64-bit Linux distros can use GPT partitioning to address larger volumes than a 32-bit OS can handle.

Can SlackWare 12 be configured to use this partitioning scheme somehow? If so, where can I find some documentation on this process?
 
Old 12-18-2007, 04:36 PM   #2
LinuxManMikeC
Member
 
Registered: Nov 2007
Location: Provo, Utah
Distribution: Debian and Ubuntu
Posts: 74

Rep: Reputation: 15
LVM 2 FAQ - What is the maximum size of a single LV?
Quote:
  • For 2.4 based kernels, the maximum LV size is 2TB. For some older kernels, however, the limit was 1TB due to signedness problems in the block layer. Red Hat Enterprise Linux 3 Update 5 has fixes to allow the full 2TB LVs. Consult your distribution for more information in this regard.
  • For 32-bit CPUs on 2.6 kernels, the maximum LV size is 16TB.
  • For 64-bit CPUs on 2.6 kernels, the maximum LV size is 8EB. (Yes, that is a very large number.)

I don't know about software RAID.
 
Old 12-18-2007, 04:50 PM   #3
petcherd
Member
 
Registered: Dec 2006
Location: Portland, OR - USA
Distribution: Formerly Slackware; now RH, SuSE, Debian/Ubuntu, & Asianux
Posts: 55

Original Poster
Rep: Reputation: 15
I just found a link to describe LVM2 limits: http://wiki.novell.com/index.php/Lin...nt#LVM2_Limits

Novell says:
Physical Extent size: Default 4MB, range from 8KB-16GB in powers of 2. There is no limit of number of extents in LVM2, therefore there is no need to adjust the extent size for large volumes

I say, "Wow!"
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 Off
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Raid 5, >2TB, GPT, Grub, booting, mounting root dtdionne Linux - Software 6 12-18-2007 05:37 AM
Partitions RAID LVM Disk Druid Kryptos Linux - Newbie 2 11-17-2007 08:13 PM
GUID Partition Table / Disk Label Slipstream2006 Suse/Novell 2 07-13-2007 06:53 AM
RAID with LVM and EVMS empty after dead disk IanGrant Linux - Hardware 3 06-15-2007 05:13 PM
software raid 5 + LVM and other raid questions slackman Slackware 5 05-09-2007 02:58 PM


All times are GMT -5. The time now is 04:40 PM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration