format and LUN > 2Tb

format and LUN > 2Tb

Post by Frederic Rousse » Fri, 24 Jun 2005 21:17:50



Hi,

   I've got a sun v40z with a storedge 3511 and i create a logical
device (with raid 5) which is > 2 Tb

However format give me an error message for the new LUN

# format
Searching for disks...
The capacity of this LUN is too large.
Reconfigure this LUN so that it is < 2TB.
done

AVAILABLE DISK SELECTIONS:
        0. c1t0d0 <DEFAULT cyl 49779 alt 2 hd 4 sec 720>

        1. c1t1d0 <DEFAULT cyl 49779 alt 2 hd 4 sec 720>

        2. c4t600C0FF00000000000857A4E22B41A00d0 <drive type unknown>

Have you an idea ?

best regards.

 
 
 

format and LUN > 2Tb

Post by Dan Foste » Fri, 24 Jun 2005 21:21:01



Quote:

>    I've got a sun v40z with a storedge 3511 and i create a logical
> device (with raid 5) which is > 2 Tb

> However format give me an error message for the new LUN

> # format
> Searching for disks...
> The capacity of this LUN is too large.
> Reconfigure this LUN so that it is < 2TB.
> done

I would suggest upgrading to at least Solaris 9 update 4 (or Solaris 10,
any version).

I think that starting with S9U4, it supports 16 TB LUNs?

-Dan

 
 
 

format and LUN > 2Tb

Post by Frederic Rousse » Fri, 24 Jun 2005 21:36:42


Dan Foster a crit :


>>   I've got a sun v40z with a storedge 3511 and i create a logical
>>device (with raid 5) which is > 2 Tb

>>However format give me an error message for the new LUN

>># format
>>Searching for disks...
>>The capacity of this LUN is too large.
>>Reconfigure this LUN so that it is < 2TB.
>>done

> I would suggest upgrading to at least Solaris 9 update 4 (or Solaris 10,
> any version).

> I think that starting with S9U4, it supports 16 TB LUNs?

> -Dan

thank you

but i'm already in Solaris 10 3/05 s10_74L2a X86

--
*---------------------------------------------------------------------*
* Frederic ROUSSEL            Tel: (33) 04-76-51-45-67                *
* Laboratoire d'AstrOphysique de Grenoble                             *
* 414 rue de la piscine, BP53X                                        *

*---------------------------------------------------------------------*

 
 
 

format and LUN > 2Tb

Post by Dan Foste » Fri, 24 Jun 2005 21:39:44


I found:

http://sunsolve9.sun.com/search/document.do?assetkey=1-25-80032-1

(Sun SPECTRUM support contract required to view full details.)

It states that Solaris 9 Update 4 and later (including Solaris 10)
supports filesystems greater than 2 TB, but the LUN is still limited to 2 TB.

This is due to sd (SCSI driver) only using SBC-2 SCSI commands which is
limited to 32-bits addressing of blocks at the raw device level.

(2^32 = ~4.2 billion 512-byte blocks, or 2.0 TB)

This limitation is scheduled to be removed in an upcoming Solaris 10
Update 2.

Update 1 is not out yet, but soon. It could be 3-6 months until S10U2 is
released.

So if you need this working today and cannot wait for S10U2, then I
would suggest you consider making it just slightly below 2.0 TB per LUN.

If you are using S9U3 or older, you are limited to 1 TB LUNs.

You can still use SVM or VxVM to concatenate multiple LUNs to present a
single metadevice/volume for filesystem creation.

-Dan

 
 
 

format and LUN > 2Tb

Post by Peter Bunclar » Fri, 24 Jun 2005 21:42:50



> Dan Foster a crit :



>>>   I've got a sun v40z with a storedge 3511 and i create a logical
>>> device (with raid 5) which is > 2 Tb

>>> However format give me an error message for the new LUN

>>> # format
>>> Searching for disks...
>>> The capacity of this LUN is too large.
>>> Reconfigure this LUN so that it is < 2TB.
>>> done

>> I would suggest upgrading to at least Solaris 9 update 4 (or Solaris 10,
>> any version).

>> I think that starting with S9U4, it supports 16 TB LUNs?

>> -Dan

> thank you

> but i'm already in Solaris 10 3/05 s10_74L2a X86

Old hat:

Support for SCSI Disks Larger Than Two Terabytes

This system administration enhancement is new in the Solaris Express
6/05 release.

SCSI, Fibre Channel, and iSCSI disks that are larger than 2 terabytes
are now supported on 64bit platforms. The format utility can be used to
label, configure, and partition these larger disks.

For more information, see the System Administration Guide: Devices and
File Systems.
......

I do hope that this gets put in S10 first quarterly release!

Pete.

 
 
 

format and LUN > 2Tb

Post by Frederic Rousse » Fri, 24 Jun 2005 21:42:28


Dan Foster a crit :

>>   I've got a sun v40z with a storedge 3511 and i create a logical
>>device (with raid 5) which is > 2 Tb

>>However format give me an error message for the new LUN

>># format
>>Searching for disks...
>>The capacity of this LUN is too large.
>>Reconfigure this LUN so that it is < 2TB.
>>done

> I would suggest upgrading to at least Solaris 9 update 4 (or Solaris 10,
> any version).

> I think that starting with S9U4, it supports 16 TB LUNs?

> -Dan

Thank's a lot

but i'm already in Solaris 10 3/05 s10_74L2a X86

an other idea ?

 
 
 

1. LUN > 2TB on Solaris 9?

Hello,

I'm trying to get a fibre-channel storage system running with a Solaris 9
machine. Everything works fine while using volumes < 2TB, but I would
prefer a bigger volume in my setup. This is not a problem in regard to the
filesystem, which supports up to 16TB, but the ssd driver seems not to
support this.

I think the newest patches for Solaris 10 provide a ssd driver that supports
luns which are bigger than 2TB, but I have found nothing relevant about
Solaris 9.

Is it possible at all to use volumes > 2TB with Solaris 9 or do I have to
use a volume management system (what I wanted to avoid) to connect multiple
smaller volumes?

Any help and hints are greatly appreciated!

Chris

2. Security vulnerability in IBM mainframe z/OS Unix System Services

3. Larger than 2TB SCSI LUNs?

4. Setting put network - How would you do it?

5. How to format a SCSI disk with LUN?

6. XFree 3.1.2 /Mach32 memory leak

7. <><><> MOUNTING EXTENDED PARTITION <><><>

8. VCD

9. Wanted: <><><> Unix Specialist <><><>

10. LILO help <><><><><><>

11. Matrox Mystique ands X.

12. >>---> Software Jobs! >>--->

13. Wanted :<SSE-1200CE <IBM-0663-H12>> format.dat