Increase ExtremeManagement Disk Space

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Hi, 

Just in the process of following this GTAC article about increasing the disk space:

https://gtacknowledge.extremenetworks.com/articles/How_To/Expanding-disk-space-for-Netsight-Appplian...

I have two hard disks associated to the host, as per the screenshot below:



When I run the script I get the following error:

./expandLVM.sh
WARNING:
  This script will attempt to locate a new virtual drive and add it to
  the current LVM configuration.  This script will format the new drive,
  and should only be used in accordance with official instructions
  to increase the size of the hard drive.

Would you like to proceed? [n]: y

Starting partition resizing.  Start size is 98GB
Logging to expandLVM.log
Scanning for new partition sdc
Scan could not detect new drive sdc, exiting.

Any idea why a new sdc partition isn't being found?

Thanks
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Martin Flammia

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Posted 2 months ago

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Ronald Dvorak, Embassador

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I didn't like to add a 2nd disk so the GTAC provided another method for me (= increase the current disk) and it worked great....

https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-expand-NetSight-VM-disk-space
(Edited)
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Seth Bean

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I also used this method because I already had two disks in my VM, and it worked well.  Be sure to direct it to expand sdb, not sda.  That tripped me up.
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Martin Flammia

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Hi Ronald,

Be honest I see that, the length of detail in it and fact in big letters saying it hasn't been tested,l that I took the root of least resistance and went with adding another disk and simply just running the script.

As it worked great for you, then I'll perhaps give that a go :-)

Thanks.
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Martin Flammia

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The instruction say the following:

root@purview-vm.dmqa.enterasys.com:~$ cfdisk
 Note: this will open an application. 
    > select the "free disk space" named /sda6
    > Select "New"
    > Select "Logical"
    > Leave the "FS Type" set to "Linux" option 83
    > Select "Write" to save the changes
    > Select "Quit" to exit

I don't see anything that says:

"free disk space" named /sda6#



I do seem to have two disks provisioned for this VM host,which this might be showing, but I only think one is in use, so I don't think this is right.

Think I perhaps use sbd as mentioned by Seth.

Here is what 'print free' displayed:

GNU Parted 2.3
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) print free
Model: VMware Virtual disk (scsi)
Disk /dev/sda: 107GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Number  Start   End     Size    Type      File system  Flags
        32.3kB  1049kB  1016kB            Free Space
 1      1049kB  256MB   255MB   primary   ext2         boot
        256MB   257MB   1048kB            Free Space
 2      257MB   107GB   107GB   extended
 5      257MB   107GB   107GB   logical                lvm
        107GB   107GB   1049kB            Free Space

So I run the command below to look at sdb:

cfdisk /dev/sdb 

And it seemed to show up the expanded space I created, so followed the instructions for this instead. 

So cfdisk /dev/sdb now looks like this:



The next step of the command is to run this:

fdisk -l /dev/sda

And it should then look as follows:

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      499711      248832   83  Linux
/dev/sda2          501758   104857599    52177921    5  Extended
/dev/sda5          501760    83884031    41691136   8e  Linux LVM
/dev/sda6        83884095   104857599    10486752+  83  Linux   <<< NEW FREE DISK

But mine looks like this:

root@NMS.server.online:~$ fdisk -l /dev/sda

Disk /dev/sda: 107.4 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 cylinders, total 209715200 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000bef28
   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      499711      248832   83  Linux
/dev/sda2          501758   209713151   104605697    5  Extended
/dev/sda5          501760   209713151   104605696   8e  Linux LVM

root@NMS.server.online:~$ fdisk -l /dev/sdb
Disk /dev/sdb: 214.7 GB, 214748364800 bytes
255 heads, 63 sectors/track, 26108 cylinders, total 419430400 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1              63   419430399   209715168+   5  Extended
/dev/sdb5             126   419430399   209715137   83  Linux

So my assumption here is that I carry on the using /dev/sdb5 instead of /dev/sda6

Just wondering if anyone can confirm before I proceed?

Thanks.
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Martin Flammia

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I decided to take the plunge.... and it worked a treat!

Thanks for the information and reassurance, really helped.

One extra thing to note, you might think to take a snapshot just to be safe, but if you do you can't increase the disk space as it gets greyed out... maybe you can increase the disk space then take a snapshot, not sure, but that caught me out a little bit.
(Edited)
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Ronald Dvorak, Embassador

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I had to work on another system today with low disk space and once again the method worked great.

https://gtacknowledge.extremenetworks.com/articles/How_To/How-to-expand-NetSight-VM-disk-space

Thanks to whoever tested this and wrote the instructions !!!