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Re: RAID1 + Ext3 + Automatic Power Resets



I'll try this and post back.

Thanks
/Mark

 --- Jeremy Rumpf <jrumpf heavyload net> wrote: > On
Friday 20 September 2002 14:37 pm, Mr mark ennis
> wrote:
> > I am testing EXT3 as a filesystem for a server
> whose
> > power supply is failure prone.
> >
> > In order to do the test, I have a lever that I can
> > control from PC1 that can press the reset button
> on
> > PC2. PC2's reset button is automatically pressed
> once
> > every 120 seconds (the boot sequence on PC2 takes
> 80
> > seconds).
> >
> > While PC2 is booted, PC1 directs email and web
> > requests at PC2, so that the PC2 disks are busy
> >
> >       PC1 o=lever==== PC2 (Raid1, Journaled EXT3)
> >
> >        ------network-----
> >
> > PC2 setup:
> >         .2* RAID-1 (mirrored) IDE Disks (md - s/w
> 
> If you're using IDE drives make sure the write-back
> cache on the drives are 
> disabled. Flushed log data may only be in the drives
> cache and not on the 
> platter when you flip the switch, causing loss of
> data for that transaction.
> 
> hdparm -W 0 /dev/hda
> hdparm -W 0 /dev/hdb
> 
> Jeremy
> 
> 
> 
> _______________________________________________
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> Ext3-users redhat com
>
https://listman.redhat.com/mailman/listinfo/ext3-users 

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