a terrabyte partition on redhat

lynos · 05-30-2006, 04:37 PM

Hi all,

I have 4 EMC enclosures (7 terrabyte) and two dell 2850 servers installed redhat enterprise 4 as em64t/amd64.
I tried to create a partition from all of the disk spaces. But I found only 739 GB. When I check the disk space using [#fdisk /dev/emcpowera ], I can see 7049GB.
How can I create a huge partition (7 TB).?

Thanks

Tinkster · 05-30-2006, 05:25 PM

HOW did you try to create the partition?
What device was fdisk pointing at when you tried to
create a partition?

Cheers,
Tink

lynos · 05-30-2006, 05:43 PM

I tried to create the partition after installation of redhat (I installed EMC packages and than I saw the storage devices (/dev/emcpowera and b)).
I used [ fdisk /dev/emcpowera ] to create a partition.

Tinkster · 05-30-2006, 05:55 PM

I'm a bit perplexed that fdisk should show you the
correct size but refuse to create something big
enough. How bizarre. When creating the partition
in fdisk, which were your steps? And what does the
output of fdisk -l /dev/emcpowera look like?

Cheers,
Tink

lynos · 05-31-2006, 04:10 PM

I can see all of size using "fdisk" when I press "p". When I try to create new partition pressing "n" it seems ok, but actually not.

Tinkster · 05-31-2006, 05:10 PM

Sorry mate, no idea ... are you getting any messages in
syslog. messages or debug that indicate a problem when
you're using fdisk on that device?

Cheers,
Tink

lynos · 06-01-2006, 02:08 AM

It said "/dev/sdb is to big" ..
OK I will report this issue to RedHat ..
Thank you for your interest

Regards

Tinkster · 06-01-2006, 02:23 AM

How does sdb tie in with emcpowera?

How is it connected, FC or iSCSI?

Cheers,
Tink

lynos · 06-01-2006, 04:07 AM

/dev/emcpowera is combined from sdb,sdc,sdd,sde ... I mean, /dev/emcpowera is a virtual device. It contains /dev/sdb, /dev/sdc ...

Server (Dell 2850) and EMC connected with FC. But EMC enclosure and SCSI disks connected via backplane (tehcnology must be SCSI).

I think this question should be asked to RedHat and/or Dell-EMC.

Again thank you for your help.

Walman · 06-01-2006, 08:09 AM

Guys

Raid the disks using either software , or hardware raid . I use hardware raid , for that you need a card . For Dell servers the card is call PERC . It comes with a software that allows you to create the partition you need . I have partition of that size here , no prob

Tinkster · 06-01-2006, 01:15 PM

Quote:

Originally Posted by lynos

/dev/emcpowera is combined from sdb,sdc,sdd,sde ... I mean, /dev/emcpowera is a virtual device. It contains /dev/sdb, /dev/sdc ...

Server (Dell 2850) and EMC connected with FC. But EMC enclosure and SCSI disks connected via backplane (tehcnology must be SCSI).

I think this question should be asked to RedHat and/or Dell-EMC.

Again thank you for your help.

Happy birthday :)

And have you read these?
http://support.dell.com/support/edoc...nstall_A04.pdf
http://support.dell.com/support/edoc...nstall_A02.pdf

Cheers,
Tink

madluther · 06-01-2006, 02:04 PM

If you want to create a 7TB partition or any partition greater than 2TB you will have to use parted rather than fdisk. The reason is the type of partition table, parted uses a GPT format, while fdisk uses an MSDOS format table.

More info here http://www.lsw.uni-heidelberg.de/use...bler/comp.html

HTH

Mad.

Tinkster · 06-01-2006, 02:22 PM

Quote:

Originally Posted by madluther

If you want to create a 7TB partition or any partition greater than 2TB you will have to use parted rather than fdisk. The reason is the type of partition table, parted uses a GPT format, while fdisk uses an MSDOS format table.

More info here http://www.lsw.uni-heidelberg.de/use...bler/comp.html

HTH

Mad.

That's the beauty of Linux, I learn something new every day :}

Thanks.

Cheers,
Tink