SATA Hotplug kills uninvolved gRAID3

Frank Coopermine fcooper1960 at yahoo.com
Tue Sep 13 01:46:52 PDT 2005


Hi, 

maybe you can use one computer for backups and one
computer for the RAID. It's not nice but will
definitely work.

cu

Frank

> Hi,
> 
> I am using two Promise TX4 SATA II 150 
> controllers in one computer. To the 
> controllers three hard-disks for backups
> and three hard-disks for a RAID3 storage 
> (graid3) are attached.
> 
> The idea was to change the hard-disks 
> for the backup via hotswap on a regular 
> basis, while the RAID disks remain untouched. 
> But if I (remove and) connect only 
> one backup disk while the system 
> is running then FreeBSD also re-connects
> many (but not all) uninvolved SATA drives.
> At the end, the RAID is broken which
> is not so good...  Is there a way
> to block the hotplug feature for
> the RAID - ATA channels ? Or is there
> another workaround/fix? 
> 
> Sep  9 20:52:02 live2 kernel: subdisk8: detached
> Sep  9 20:52:02 live2 kernel: ad8: detached
> Sep  9 20:52:02 live2 kernel: ata4: DISCONNECTED
> Sep  9 20:52:02 live2 kernel: subdisk14: detached
> Sep  9 20:52:02 live2 kernel: ad14: detached
> Sep  9 20:52:02 live2 kernel: GEOM_RAID3: Device 
> home: provider ad14 disconnecte d.
> Sep  9 20:52:02 live2 kernel: ata7: DISCONNECTED
> Sep  9 20:52:02 live2 kernel: subdisk18: detached
> Sep  9 20:52:02 live2 kernel: ad18: detached
> Sep  9 20:52:02 live2 kernel: ata9: DISCONNECTED
> Sep  9 20:52:02 live2 kernel: ata5: CONNECTED
> Sep  9 20:52:02 live2 kernel: ad10: 190782MB <WDC 
> WD2000JD-22HBC008.02D08> at a ta5-master SATA150
> Sep  9 20:52:02 live2 kernel: ata9: CONNECTED
> Sep  9 20:52:02 live2 kernel: ad18: 190782MB <WDC 
> WD2000JD-22HBC0 08.02D08> at a ta9-master SATA150
> Sep  9 20:52:02 live2 kernel: ata7: CONNECTED
> Sep  9 20:52:02 live2 kernel: ad14: 238475MB <WDC 
> WD2500SD-01KCC0 08.02D08> at a ta7-master SATA150
> Sep  9 20:52:02 live2 kernel: GEOM_RAID3: Device 
> home: provider ad14 detected.
> Sep  9 20:52:02 live2 kernel: GEOM_RAID3: Device 
> home: rebuilding provider ad14
> Sep  9 20:52:02 live2 kernel: ata4: CONNECTED
> Sep  9 20:52:02 live2 kernel: ad8: 190782MB <WDC 
> WD2000JD-22HBC0 08.02D08> at at a4-master SATA150
> 
> best regards
> 
> David



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