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Obsolete Releases => SME Server 7.x => Topic started by: stian on October 03, 2007, 09:06:49 PM

Title: Raid 5 with 6x500Gb
Post by: stian on October 03, 2007, 09:06:49 PM: I am trying to install sme server on a MSI G965MDH (Intel G965) with 6 x 500Gb disks attached to it. Install runs fine but rebooting when finnished install gives kernel panic.

Any idea why? I am not over the 2000Gb limit cause sme server should configure this as RAID5 with a hot spare. That will end up with exactly or a little less than 2000Gb storage. I have set jumpers at all disk to SATA1-mode and set SATA1-configuration in BIOS to ahci.

I tried it with just 4 disks, and then it works smoothly.

Link to mainboard: http://www.hardwarezone.com/articles/view.php?cid=6&id=2218

--
Stian
Title: Re: Raid 5 with 6x500Gb
Post by: imcintyre on October 03, 2007, 10:57:45 PM: not being sarcastic but couldn't help notice that 500x(6-1)=2,500 Gb
Title: Re: Raid 5 with 6x500Gb
Post by: byte on October 03, 2007, 11:12:17 PM: Quote from: stian on October 03, 2007, 09:06:49 PM
I am trying to install sme server on a MSI G965MDH (Intel G965) with 6 x 500Gb disks attached to it. Install runs fine but rebooting when finnished install gives kernel panic.

Could you please report bugs and potential bugs in the bug tracker, thanks!
Title: Re: Raid 5 with 6x500Gb
Post by: stian on October 04, 2007, 09:09:05 AM: :-) 5x500 = 2500, but not with Raid5

http://www.ibeast.com/content/tools/RaidCalc/RaidCalc.asp
Title: Re: Raid 5 with 6x500Gb
Post by: SoftDux on January 25, 2008, 02:37:56 PM: so, is there a 2TB disk space limit with SME?
Title: Re: Raid 5 with 6x500Gb
Post by: Reinhold on January 25, 2008, 05:05:44 PM: http://wiki.contribs.org/KnownProblems

Quote
* Anaconda doesn't support >2Tb
Installing on large storage devices will take a significant amount of work. see Bugzilla:1963

http://bugs.contribs.org/show_bug.cgi?id=1963

Regards
Reinhold
Title: Re: Raid 5 with 6x500Gb
Post by: Reinhold on January 25, 2008, 05:10:10 PM: ... and imcintyre :grin:

RAID5 has capacity of:
no.of.drives - 1 - no.of.spares

or in this case: 6 - 1 - 1 = 4 ; 4 * 500Gb = 2 Tb
(at least basically ... iow give/take marketeer-fiddling with sizes
so please stian check the -real- "Gib" capacity of the drives you use)

Regards
Reinhold
Title: Re: Raid 5 with 6x500Gb
Post by: kevinb on January 26, 2008, 05:45:24 AM: Hi Stian,

You can install SME by typing “sme partition” at the install screen. Then you can edit the default partitions.

You will have to delete the LV’s since the text GUI does not seem to support them and recreate your RAID partitions scratch. Then you can create a RAID 1 100 Mb partition for “/boot”, a RAID 5 xxx partition for “/swap” and a RAID 5 2Tb partition for “/”.

The swap partition should be 4096 minus whatever your system RAM is or whatever you need to get your “/” partition below the 2TB limit.

Alternatively you could split the 2Tb’s into a “/” and another partition (e.g. /opt, /var, or ?).

Hope this helps.

Kevin
Title: Re: Raid 5 with 6x500Gb
Post by: SoftDux on January 26, 2008, 06:53:32 AM: wouldn't that make upgrades in the future a bit difficult?
Title: Re: Raid 5 with 6x500Gb
Post by: kevinb on January 26, 2008, 10:10:47 PM: Softdux,

I can't image why it would. When you upgrade it does not repartition and reformat the drives.

Kevin
Title: Re: Raid 5 with 6x500Gb
Post by: Reinhold on January 27, 2008, 11:18:45 PM: Quote
I can't image why it would.

I can ...
...and I really would like SHAD LORDS - the developer of that aspect of SME - to comment before you all start trying.

Regards
Reinhold
Title: Re: Raid 5 with 6x500Gb
Post by: stephen noble on January 28, 2008, 01:08:51 AM: Quote from: Reinhold on January 27, 2008, 11:18:45 PM
I can ...
...and I really would like SHAD LORDS - the developer of that aspect of SME - to comment before you all start trying.

Shad is more likely to respond to a bug report that results in an improvement to code or docs
Title: Re: Raid 5 with 6x500Gb
Post by: kevinb on January 28, 2008, 06:41:09 AM: OK I opened a bug report "http://bugs.contribs.org/show_bug.cgi?id=3823"

Reinhold, what do you anticipate being an issue. I would like to know so I can test it.

I did do an update from 7.2 to 7.3 on a test VM without issue and have since installed this on the production server using affa to move the data over (backup and restore). All is working well but now I have concerns.

I will try and update to 8.0 Beta on the VM machine and report my results.

Kevin