In Search of the Max Disk Size

[ FYI, this is work in progress I haven’t found the answer yet. Just sharing info]

So we got Smart-1 appliances with 12 TB on them and I noticed GAIA only can see 2TB. Hmmmmmm I says to myself. Called a friend and they are having same problem. Hmmmm.

Well our lab is limited and I lost our Smart-1 to production so I can’t run tests as I would like, but here is the information I have.

The problem is that GAIA can only recognize 1K block sizes:

[Expert@smartlog]# fdisk -l

Disk /dev/cciss/c0d0: 513.6 GB, 513618945024 bytes 255 heads, 63 sectors/track, 62443 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot      Start         End      Blocks   Id  System

/dev/cciss/c0d0p1   *           1          19      152586   83  Linux

/dev/cciss/c0d0p2              20        2303    18346230   82  Linux swap /Solaris

/dev/cciss/c0d0p3            2304       62443   483074550   8e  Linux LVM

[Expert@smartlog]# dumpe2fs /dev/cciss/c0d0p1
dumpe2fs 1.39 (29-May-2006)
Filesystem volume name:   /boot
Last mounted on:          <not available>
Filesystem UUID:          25910e70-451a-4d36-bf0f-0914c002b582
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal resize_inode dir_index filetype needs_recovery sparse_super
Default mount options:    user_xattr acl
Filesystem state:         clean
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              38152
Block count:              152584
Reserved block count:     7629
Free blocks:              128672
Free inodes:              38101
First block:              1
Block size:               1024
Fragment size:            1024
Reserved GDT blocks:      256
Blocks per group:         8192
Fragments per group:      8192
Inodes per group:         2008
Inode blocks per group:   251

and according to Wiki:

You can only get 2TB disks partitions.

Good news bad news.

Good news: You can use LVM to manually build up a 16TB disks by installing GAIA on the 2TB partition and then manually creating another 12TB partion with LVM and expanding the 2TB to include the 12 TB. Haven’t tried it…One site just made 6 2TB partitions and linked them with lvm.

Bad news: If I’m paying $1 gazillion for a Smart-1, it should see all the disk  and memory I can physically jam into the box. Disaster recovery, build cycles, upgrades, migrations will be a nightmare with manually having to custom build the box every time.

RUMOR: I hear a rumor that if you re-install on this same platform, GAIA does not wipe out some unique UID on the disk pack and it will crash. You have to use the RAID tools to wipe the disk. Email me for more info. I just got this via the grapevine.

Post a comment or leave a trackback: Trackback URL.


  • Diego Lopez  On February 2, 2013 at 1:00 am

    sk61081 This may give you some pointers

    • dreezman  On February 2, 2013 at 8:47 pm

      Thanks for the tip! Yes I saw this. It gets ugly. I’m talking to the developers about upping the 1K GAIA block limit. Stay tuned.

  • SebastianB  On February 5, 2013 at 6:04 pm

    Checkpoint should get its act together and pay detail to those details. At the moment their focus seems to be only spec-sheets and yetanotherbladeyouhavetopayextrafor…


Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

Helen's Loom

"Peculiar travel suggestions are dancing lessons from God." - Kurt Vonnegut

Life Stories from Dreez

These are stories from my travels. Generally I like to write stories about local people that I meet and also brag about living the retirement dream with my #1 wife Gaby. She is also my only wife.

%d bloggers like this: