Solved

Raid disk partitioning scheme understanding

Posted on 2014-09-24
2
111 Views
Last Modified: 2016-12-08
// ----------------------------------------------ns1---------------------------------------
FreeBSD 8.3

[root@ns1 /etc]# gpart show
=>        63  1953525105  ad4  MBR  (931G)
          63        1985       - free -  (992k)
        2048  1953249280    1  freebsd  [active]  (931G)
  1953251328      273840       - free -  (133M)

=>         0  1953249280  ad4s1  BSD  (931G)
           0     2097152         - free -  (1.0G)
     2097152     8304528      2  freebsd-swap  (4G)
    10401680    14637056         - free -  (7G)
    25038736    20971520      1  freebsd-ufs  (10G)
    46010256    62914560      6  freebsd-ufs  (30G)
   108924816    20971520      5  freebsd-ufs  (10G)
   129896336    20971520      4  freebsd-ufs  (10G)
   150867856  1676083200      7  freebsd-ufs  (799G)
  1826951056   126298224         - free -  (60G)

=>        63  1953525105  ad6  MBR  (931G)
          63        1985       - free -  (992k)
        2048  1953249280    1  freebsd  [active]  (931G)
  1953251328      273840       - free -  (133M)

=>         0  1953249280  ad6s1  BSD  (931G)
           0     2097152         - free -  (1.0G)
     2097152     8304528      2  freebsd-swap  (4G)
    10401680    14637056         - free -  (7G)
    25038736    20971520      1  freebsd-ufs  (10G)
    46010256    62914560      6  freebsd-ufs  (30G)
   108924816    20971520      5  freebsd-ufs  (10G)
   129896336    20971520      4  freebsd-ufs  (10G)
   150867856  1676083200      7  freebsd-ufs  (799G)
  1826951056   126298224         - free -  (60G)

=>        63  1953253418  ar0  MBR  (931G)
          63        1985       - free -  (992k)
        2048  1953249280    1  freebsd  [active]  (931G)
  1953251328        2153       - free -  (1.1M)

=>         0  1953249280  ar0s1  BSD  (931G)
           0     2097152         - free -  (1.0G)
     2097152     8304528      2  freebsd-swap  (4G)
    10401680    14637056         - free -  (7G)
    25038736    20971520      1  freebsd-ufs  (10G)
    46010256    62914560      6  freebsd-ufs  (30G)
   108924816    20971520      5  freebsd-ufs  (10G)
   129896336    20971520      4  freebsd-ufs  (10G)
   150867856  1676083200      7  freebsd-ufs  (799G)
  1826951056   126298224         - free -  (60G)

Could you explain what does all this devices mean? Particularly, what is ad4, ad6, ar0

                        /dev/ad4s1f     /dev/ad6s1e     /dev/ar0s1d
/dev/ad4        /dev/ad4s1g     /dev/ad6s1f     /dev/ar0s1e
/dev/ad4s1      /dev/ad6        /dev/ad6s1g     /dev/ar0s1f
/dev/ad4s1a     /dev/ad6s1      /dev/ar0        /dev/ar0s1g
/dev/ad4s1b     /dev/ad6s1a     /dev/ar0s1      
/dev/ad4s1d     /dev/ad6s1b     /dev/ar0s1a    
/dev/ad4s1e     /dev/ad6s1d     /dev/ar0s1b    

What kind of raid I have? Raid 0 or raid 1?

Why I don't have /dev/raid folder on NS1? but I have /dev/raid/ folder on ns2

//------------------------------------ NS2 ----------------------------------------------
FreeBSD 10.

root@ns2:~ # gpart show
=>        34  1953253414  raid/r0  GPT  (931G)
          34        1024        1  freebsd-boot  (512K)
        1058     2096128           - free -  (1.0G)
     2097186   209715200        2  freebsd-ufs  (100G)
   211812386     8388608        3  freebsd-swap  (4.0G)
   220200994  1732247552        4  freebsd-ufs  (826G)
  1952448546      804902           - free -  (393M)

Device list
/dev/ad4
/dev/ad6  
/dev/ada0                      
 /dev/ada1      
/dev/ar0        
 /dev/ar0p1  
 /dev/ar0p2      
 /dev/ar0p3
/dev/ar0p4

Could you explain what does all this devices mean?
What kind of raid I have here?


root@ns2:/dev/raid # ls
r0      r0p1    r0p2    r0p3    r0p4
0
Comment
Question by:Nusrat Nuriyev
2 Comments
 
LVL 27

Accepted Solution

by:
serialband earned 500 total points
ID: 40342181
It appears that you have a RAID 1 device named ar0 with 2 physical disks ad4 and ad6
0
 

Author Comment

by:Nusrat Nuriyev
ID: 40349299
on which ns1 or ns2? can you recommend software which will exactly tell which raid I'm in
0

Featured Post

Threat Intelligence Starter Resources

Integrating threat intelligence can be challenging, and not all companies are ready. These resources can help you build awareness and prepare for defense.

Join & Write a Comment

After running Ubuntu some time, you will be asked to download updates for fixing bugs and security updates. All the packages you download replace the previous ones, except for the kernel, also called "linux-image". This is due to the fact that w…
The purpose of this article is to fix the unknown display problem in Linux Mint operating system. After installing the OS if you see Display monitor is not recognized then we can install "MESA" utilities to fix this problem or we can install additio…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, Just open a new email message.  In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…
This tutorial demonstrates a quick way of adding group price to multiple Magento products.

747 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now