Expand partition size after a raid array increase

Joseph Mays mays at win.net
Wed Nov 13 17:11:17 UTC 2013

My apologies. I was originally attaching the results of "gpart show" as a screenshot because I was working through an internet kvm module on a system several states away that was booted in standalone mode. But the mailing list seems to strip off attachments, so I ssh'd into the system in normal operation to get output of "gpart show" that I can cut and paste here.

root at warehouse:/root # gpart show mfid0
=>         34  17578327997  mfid0  GPT  (10T) [CORRUPT]
           34          128      1  freebsd-boot  (64k)
          162   1048576000      2  freebsd-ufs  (500G)
   1048576162  16521363328      4  freebsd-ufs  (7.7T)
  17569939490      8388540      3  freebsd-swap  (4G)
  17578328030            1         - free -  (512B)

-----Original Message----- 
From: Joseph Mays 
Sent: Monday, November 11, 2013 3:45 PM 
To: Joseph Mays 
Subject: Re: Expand partition size after a raid array increase 

I have a freebsd box with an LSI Raid controller in it. It had 4 3-terabyte 
drives configured in an 8TB array. I added a 5th drive and built that into 
the array. Of course, the amount of drive space that shows in operation in 
FreeBSD did not change, presumably because I need to resize the partition.

I was trying to follow the partition resizing instructions shown here ---


but when I do the “gpart show ” I don’t see the free space. What I do see is 
a change in the apparent overall size of the disk and a set of parititions 
that don’t add up to the new size of the disk.

How should I be going about increasing the size of the partition?

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