On Thu, Dec 10, 2009 at 03:21:46PM -0500, nixlists wrote: > On Thu, Dec 10, 2009 at 10:12 AM, Marco Peereboom <sl...@peereboom.us> wrote: > >> So softraid can't detect if the data is written differently to the > >> drives? In what sort of cases would one expect the mirror to become > >> corrupt? Kernel crash? Hardware crash? Does softraid detect this? What > >> failures does it detect? > > > > I must not be making myself clear. No, softraid can and will not detect > > that. Even if you know you only know that the data is bad; there are no > > other hints that can be deduced from that knowledge. This can happen > > when a drive returns corrupt data for whatever reason, be it hardware > > failure or a failed previous write etc. > > So in what cases does softraid degrade the mirror then, other than > pulling the disk out?
When an I/O fails. > How is hardware mirror raid different? It isn't. > > Thanks.
