Mailinglist Archive: opensuse-features (138 mails)

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[openFATE 310938] Support Harddrives with more than 3TB capacity
  • From: fate_noreply@xxxxxxx
  • Date: Tue, 7 Dec 2010 08:31:26 +0100 (CET)
  • Message-id: <feature-310938-10@xxxxxxxxxxxxxx>
Feature changed by: Per Jessen (pjessen)
Feature #310938, revision 10
Title: Support Harddrives with more than 3TB capacity

openSUSE Distribution: New
Priority
Requester: Mandatory

Requested by: Denny Beyer (lumnis)
Partner organization: openSUSE.org

Description:
As harddrives with capacities more than 3TB's are available, we need to
ensure that those drives are fully supported. That includes: -
mainboard chipset drives supporting those drives - booting from those
drives : That requires EFI/UEFI support, as MBR only supports 2TB
harddrives as maximum because it's based on 32bit fields - drive needs
to be set up as GPT drive because GUID partitiontable uses 64bit sector
numbers - full capacity is recognized by the system and usable Recent
tests were showing issues with current linux systems.
Could somebody with more inside knowledge could comment on that and if
this could cause problems with upcoming openSUSE releases?

Test Case:
I haven't got the needed hardware, but if somebody does, could he/she
try to install openSUSE 11.3/4 and report issues to get some idea where
we are with regards to this issue.

Business case (Partner benefit):
openSUSE.org: As available harddrive capacities are constantly growing,
we need to make sure that opensuse can be installed on those systems
without a problem.

Discussion:
#1: Rajko Matovic (rajko_m) (2010-12-06 04:17:04)
Drivers that will support new developed hardware is not a problem that
openSUSE, or any other distribution can do much about. When driver
appear in a Linux kernel it can be tested, debugged, used, but that is
the same story with any driver for any hardware device.
I would file that only under product openSUSE distribution and remove
11.4, as boot method change will not happen in 11.4. It is too late for
such change.
More important is that openSUSE can be installed on large drives
without EFI using current partitioning where system partition is under
the limit of 2TB, and once system is booted it can access whole drive
provided that there is kernel driver for used chipset.
It would be nice to see where and how are mentioned "recent tests"
performed, so that is clear what is tested and what possible problems
are found. I can't see other problems besides attempt to use as system
partition some that is beyond 2 TB, which is rather unusual requirement
considering that openSUSE default installation has 3 partitions:
* swap
* system
* home
Swap is sized as available RAM, plus some space for some programs that
use swap, which is up to 10GB, if user wants to hibernate system that
has, say, 8 GB RAM.
System partition that has 30 GB is rather very large. I have currently
a lot of software installed and system is still under 10 GB. To be able
to burn DVDs /tmp directory should be able to take some 5GB temporary
iso image, so 15 GB should be fine for majority of users. The /tmp
directory can be moved on a separate partition at any time, so that is
not issue either.
Home can be the rest of hard disk, which is not a problem to access
once system is running.
Ditto, asking for ability to create system partitions above 2 TB is
rather sign of bad planning, then real need.

#4: Arvin Schnell (aschnell) (2010-12-06 23:29:28) (reply to #1)
The MSDOS partition table cannot handle disks with more than 2TB (and
512 byte sector size). This limitation does not only affect booting.
Thus when you create or have a MSDOS partition table YaST will only use
the first 2TB.
For drives bigger than 2TB you need GPT (YaST will create one if the
disk does not have an partition table or you ask YaST to create a new
partition table).

#2: Rajko Matovic (rajko_m) (2010-12-06 04:20:04)
Removed 11.4 as product. See above for the reasons.

#3: Arvin Schnell (aschnell) (2010-12-06 23:30:21)
openSUSE 11.3 can handle drives with more than 2TB. If something does
not work we need bug reports. In fact I'm surprised that there haven't
been any so far.

+ #5: Per Jessen (pjessen) (2010-12-07 08:29:31) (reply to #3)
+ Harddisks > 2Tb are still not common. Just now I had to check with
+ three suppliers to find one that would ship a 3Tb Hitachi Deskstar
+ 7K3000.



--
openSUSE Feature:
https://features.opensuse.org/310938

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