jmm> [m.allan noah]
jmm> > > The howto says try mkraid --force. With a 2 drive (2/4) will I lose
jmm> > > everything.
jmm> >
jmm> > why do you want to make a two drive raid5? that makes no sense. use raid1.
jmm>
jmm> If you *read* his message you'll notice that he has 4 drives in the
jmm> array and lost 2 of them (2 still active). :)
jmm>
jmm> > yes- if there is data already on the drive, running mkraid is a pretty sure
jmm> > way to destroy the filesystem, since part of the file system will be
jmm> > overwritten.
jmm>
jmm> Incorrect. if it was a s/w raid device already, then nothing gets touched
jmm> except the raid super-block that was already there. Resync may occur,
jmm> but there are mkraid options to keep that from happening too.
Something very similar happened to me and in the end I add to
reconstruct 60.000 mail accounts with some thousands email messages
lost... This probably nothing to do with Raid software but with the
filesystem... Anyway, I gave up running Raid5 in this production
server and I am now ruunig it in a 75Gig SCSI disc with reiserfs...
There sure is a lack of documentation on what can be done in
case of disk failure that would have helped a lot in my case and
probably would have prevented this MAJOR loss of data... 8-(..
mcc
