Promise RAID / ata problem

[Tamouh H.]

> >I have a Promise Fasttrak TX4200 running a single mirrored 
> array under 5.5.
> >Everything's been great for nearly a year until a recent reboot.  It 
> >appears that the two disk mirrored array is coming up as two arrays 
> >with a single disk attached:
> >
> >Before:
> >
> >kernel: acd0: CDRW <SONY CD-RW CRX140E/1.0n> at ata1-slave UDMA33
> >kernel: ad6: 305245MB <Seagate ST3320620AS 3.AAC> at ata3-master 
> >SATA150
> >kernel: ad10: 305245MB <Seagate ST3320620AS 3.AAC> at ata5-master 
> >SATA150
> >kernel: ar0: 305175MB <Promise Fasttrak RAID1> status: READY
> >kernel: ar0: disk0 READY (master) using ad10 at ata5-master
> >kernel: ar0: disk1 READY (mirror) using ad6 at ata3-master
> >
> >After:
> >
> >kernel: acd0: CDRW <SONY CD-RW CRX140E/1.0n> at ata1-slave UDMA33
> >kernel: ad6: 305245MB <Seagate ST3320620AS 3.AAC> at ata3-master 
> >SATA150
> >kernel: ad10: 305245MB <Seagate ST3320620AS 3.AAC> at ata5-master 
> >SATA150
> >kernel: ar0: disk0 DOWN no device found for this subdisk
> >kernel: ar0: disk1 READY (mirror) using ad6 at ata3-master
> >kernel: ar1: 305175MB <Promise Fasttrak RAID1> status: DEGRADED
> >kernel: ar1: disk0 READY (master) using ad10 at ata5-master
> >kernel: ar1: disk1 DOWN no device found for this subdisk
> >
> ># atacontrol status ar0
> >ar0: ATA RAID1 subdisks: DOWN ad6 status: DEGRADED
> >
> ># atacontrol status ar1
> >ar1: ATA RAID1 subdisks: ad10 DOWN status: DEGRADED
> >
> >Nothing's was changed on the machine.  I'm looking for any 
> ideas on the 
> >best way to re-establish the single mirrored array.  Thanks a lot,

The error indicate your Array had failed. Replace the bad drive and let Promise rebuild is one way. Promise RAID card does automatic rebuild after an array failure.

Usually why you boot up the server, Promise BIOS will say whether the Array is FUNCTIONAL or FAILURE.

You can also temporarily go to single mode and mount the drives manually with ar1 instead of ar0

Tamouh