hi gregory..
yes... guess that true too... that swap on raid1 does have
some benefits...
( i hate to stay up and running when its running in degraded
( and would want to fix it asap...
- it also depends on what kind of failure that would also affect
if the hardware needs to be rebooted or not...
- most people seem to be running intel boxess..
and if they are running sgi/sun boxes... those puppies
are more expensive... as would be their disks
- lastly... if the machine is running on the average of 32Mb or more
of swap .... add at least 64Mb more memory ( $35 at todays costs )...
- ( 256Mb of ram is $100 range )
- you'd be happier with a faster machine..
c ya
alvin
On 3 Jun 2001, Gregory Leblanc wrote:
> On 03 Jun 2001 17:19:10 -0700, Alvin Oga wrote:
> >
> > hi giulio
> >
> > what would be the point of making swap a raid0 or raid1 device ??
>
> There's no reason to have swap on a RAID0 device. swap on a RAID1
> device allows your machine to stay running, even if the drive where you
> had SWAP fails.
>
> > - if you have problem... the machine will most likely
> > shutdown and you lose all swap data....
>
> Not on decent hardware.
>
> > just use a regular swap partition as swap... not /dev/mdxx
>
> You can do that, but it doesn't give you any redundancy. See above.
>
> For what it's worth, I -believe- that SWAP to a file on any RAID
> filesystem is safe, but I don't actually know the code very well. If
> you want to be safe with swap on RAID, upgrade to the 2.4.x kernels.
> Greg
>
>
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