SUM - RAID 0 fragmentation

From: Ryan Bae [ESRI-Redlands] <rbae_at_esri.com>
Date: Thu, 26 Dec 1996 08:57:04 -0800

Thanks to:

Gert Maaskant <gertm_at_cvi.ns.nl>
alan_at_nabeth.cxo.dec.com

Both recommended using tunefs with the -minfree option to
reduce the default amount from 10% to about 1-2%.


The responses:
--------------


>
> Hi Ryan,
>
> When you use a UFS file-system, newfs reserve 10% diskspace.
> You can check it whith the command ;
> # dumpfs /dev/rre0c | more; look at the minfree count.
>
> Umount the file-system and change the value ;
> # tunefs -m 1 /dev/rre0c ; change the value to 1 % free.
>
>
> Good luck, Gert...
> ------------------------------------------------------------------------
>
>
> Gert Maaskant
>
> Operational Support UNIX EDS
> Croeselaan 22, 3521 CB Utrecht NL
>
> Telefoon : 030 - 2924 251 Telefax : 030 - 2924 250
> Kamer : 0e etage E-Mail : gertm_at_cvi.ns.nl
> E-Mail : gert.maaskant_at_nl.eds.com
>

> From alan_at_nabeth.cxo.dec.com Mon Dec 23 09:56 PST 1996
> From: alan_at_nabeth.cxo.dec.com
> Comment: Environmental Systems Research Institute
> To: rbae_at_esri.com (Ryan Bae [ESRI-Redlands])
> Subject: Re: [Q] RAID 0 - fragmentation
> Date: Mon, 23 Dec 96 10:52:45 -0700
> X-Mts: smtp
> Content-Type: text
> Content-Length: 385
>
>
> If you're using UFS, this is probably the 10% reserved
> space. See the manual page for tunefs(8) for more
> information. For a device this large you can probably
> reduce the percentage (controlled by minfree) to 2%
> without risking any performance problems.
>
> Do check the disklabel and verify that the size of the
> C partition is what you expect. That could also be the
> problem.
>


Thanks again for your help.

Regards,

Ryan Bae

_______________________________________________________________________________

 _|_| Environmental Systems Research Institute Inc.
 _|_|

 Ryan E. Bae Tel: (909) 793-2853
 Technical Support Fax: (909) 792-0960
 ESRI - Redlands Fax on Demand: (909) 307-3111
 380 New York St. Tech Support Hotline: (909) 793-3774
 Redlands, CA e-mail: rbae_at_esri.com
 92373-8100 http://www.esri.com/

"The preceeding statements are my own and do not reflect the views of ESRI."
_______________________________________________________________________________
Received on Fri Dec 27 1996 - 10:32:51 NZDT

This archive was generated by hypermail 2.4.0 : Wed Nov 08 2023 - 11:53:47 NZDT