Re: Are linux-fs's drive-fault-tolerant by concept?
Denis Vlasenko (vda@port.imtp.ilyichevsk.odessa.ua)
Mon, 21 Apr 2003 12:25:28 +0300
On 19 April 2003 23:33, Andreas Dilger wrote:
> On Apr 19, 2003 21:04 +0100, John Bradford wrote:
> > > > > I wonder whether it would be a good idea to give the linux-fs
> > > > > (namely my preferred reiser and ext2 :-) some
> > > > > fault-tolerance.
>
> I'm not against this in principle, but in practise it is almost
> useless. Modern disk drives do bad sector remapping at write time, so
> unless something is terribly wrong you will never see a write error
> (which is exactly the time that the filesystem could do such
> remapping). Normally, you will only see an error like this at read
> time, at which point it is too late to fix.
It is *not* useless.
I have at least 4 disks with some bad sectors. Know what?
They are still in use in a school lab and as 'big diskettes'
(transferring movies etc). I refuse to dump them just because
'todays disks are cheap'. I don't want my fs to die just because
these disks develop (ohhhh) a single new bad sector.
--
vda
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