Re: Software RAID when it works and when it doesn't

[Alberto Alonso <alberto@ggsys.net>]

On Sat, 2007-10-27 at 11:26 -0400, Bill Davidsen wrote:
> Alberto Alonso wrote:
> > On Fri, 2007-10-26 at 18:12 +0200, Goswin von Brederlow wrote:
> >
> >   
> >> Depending on the hardware you can still access a different disk while
> >> another one is reseting. But since there is no timeout in md it won't
> >> try to use any other disk while one is stuck.
> >>
> >> That is exactly what I miss.
> >>
> >> MfG
> >>         Goswin
> >> -
> >>     
> >
> > That is exactly what I've been talking about. Can md implement
> > timeouts and not just leave it to the drivers?
> >
> > I can't believe it but last night another array hit the dust when
> > 1 of the 12 drives went bad. This year is just a nightmare for
> > me. It brought all the network down until I was able to mark it
> > failed and reboot to remove it from the array.
> >   
> 
> I'm not sure what kind of drives and drivers you use, but I certainly 
> have drives go bad and they get marked as failed. Both on old PATA 
> drives and newer SATA. All the SCSI I currently use is on IBM hardware 
> RAID (ServeRAID), so I can only assume that failure would be noted.
> 
-- 
Alberto Alonso                        Global Gate Systems LLC.
(512) 351-7233                        http://www.ggsys.net
Hardware, consulting, sysadmin, monitoring and remote backups