On Tuesday October 9, babydr@xxxxxxxxxxxxxxxx wrote: > Hello Neil , > > On Tue, 9 Oct 2007, Neil Brown wrote: > > On Tuesday October 9, janek_listy@xxxxx wrote: > >> > >> Problems at step 4.: 'man mdadm' doesn't tell if it's possible to > >> grow an array to a degraded array (non existant disc). Is it possible? > > > > Why not experiment with loop devices on files and find out? > > > > But yes: you can grow to a degraded array providing you specify a > > --backup-file. > Is there an estimate of how large this file can get ? > It's probably a calculation based on disk & array parameters . > But I was unable to find a reference on it from the manpage . > > Tia , JimL I think: chunk-size * old-ndisks * new-ndisks * 2 + 1K It might be smaller than that, but it shouldn't be larger. NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html