10TB filesystem possible on Red Hat 4 EL System?

Jack Murgia jackmurgia at hubbadubba.com
Tue Aug 14 17:00:30 CDT 2007


A new PE 2950 / MD1000 system was ordered by purchasing with Red Hat 4
preinstalled. We have run all updates and attempted to create a 10tb array
with no success.

One of our principals here is determined to put a 10TB ext3 filesystem on
this array. 

Using fdisk will only create a 2TB partition, so I created a partition with
parted instead, but we can't put an ext3 filesystem onto it. Thought I would
try xfs, but RHN doesn't offer an xfsprogs package.

Do we need to move to RH or CentOS 5 in order to have a 10TB array?

Here are the steps I took:

Using /dev/sdc  
(parted) mklabel gpt
(parted) mkpart primary 0 -1
(parted) print     
Disk geometry for /dev/sdc: 0.000-10008320.000 megabytes
Disk label type: gpt
Minor    Start       End     Filesystem  Name                  Flags
1          0.017 10008319.000
(parted) quit      
Information: Don't forget to update /etc/fstab, if necessary.
[root at xxx ~]# pvcreate /dev/sdc1
  Physical volume "/dev/sdc1" successfully created
[root at xxx ~]# vgcreate vg0 /dev/sdc1
  Volume group "vg0" successfully created
[root at xxx ~]# vgdisplay
  --- Volume group ---
  VG Name               vg0
  System ID        
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  1
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                0
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               9.54 TB
  PE Size               4.00 MB
  Total PE              2502079
  Alloc PE / Size       0 / 0
  Free  PE / Size       2502079 / 9.54 TB
  VG UUID               OXokb4-nvoM-dErL-zy1S-8xWc-fiNG-MLy7QL
   
  --- Volume group ---
  VG Name               VolGroup_ID_7137
  System ID        
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  6
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                4
  Open LV               4
  Max PV                0
  Cur PV                2
  Act PV                2
  VG Size               148.31 GB
  PE Size               32.00 MB
  Total PE              4746
  Alloc PE / Size       4579 / 143.09 GB
  Free  PE / Size       167 / 5.22 GB
  VG UUID               PyXGhG-zthh-yIee-q98t-w8LK-63h7-2Xwp0l
   
[root at cadata3 ~]# lvcreate -n raid10tb -l2502079 vg0
  Logical volume "raid10tb" created

[root at xxx ~]# mke2fs -j -b 4096 -t largefile /dev/vg0/raid10tb
mke2fs 1.35 (28-Feb-2004)
mke2fs: bad blocks count - /dev/vg0/raid10tb


Jack Murgia, 
Senior Engineer,
Windows/Mac/Linux Integration
OS X Server System Administration
802.11 Network Implementation
Business Development
 
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