I discovered this tonight. I don’t know how long this has been going on.
$ sudo tw_cli info c0 Unit UnitType Status %RCmpl %V/I/M Stripe Size(GB) Cache AVrfy ------------------------------------------------------------------------------ u0 RAID-10 OK - - 64K 195.548 ON OFF u1 SPARE OK - - - 69.2404 - OFF u2 SPARE OK - - - 69.2404 - OFF Port Status Unit Size Blocks Serial --------------------------------------------------------------- p0 OK u0 69.25 GB 145226112 WD-WMAKE2379003 p1 OK u1 69.25 GB 145226112 WD-WMAKE2379069 p2 OK u0 69.25 GB 145226112 WD-WMAKE2379066 p3 OK u0 69.25 GB 145226112 WD-WMAKE2379012 p4 OK u0 69.25 GB 145226112 WD-WMAKE2379286 p5 OK u0 69.25 GB 145226112 WD-WMAKE2379019 p6 OK u0 69.25 GB 145226112 WD-WMAKE2394339 p7 OK u2 69.25 GB 145226112 WD-WMAKE2378696 Name OnlineState BBUReady Status Volt Temp Hours LastCapTest --------------------------------------------------------------------------- bbu On Yes OK OK OK 255 31-Mar-2007 [dan@supernews:/usr/local/share/3dm2/help/en] $ sudo tw_cli info c0 u0 Unit UnitType Status %RCmpl %V/I/M Port Stripe Size(GB) ------------------------------------------------------------------------ u0 RAID-10 OK - - - 64K 195.548 u0-0 RAID-1 OK - - - - - u0-0-0 DISK OK - - p0 - 65.1826 u0-0-1 DISK OK - - p2 - 65.1826 u0-1 RAID-1 OK - - - - - u0-1-0 DISK OK - - p6 - 65.1826 u0-1-1 DISK OK - - p5 - 65.1826 u0-2 RAID-1 OK - - - - - u0-2-0 UNKNOWN UNKNOWN - - p3 - 521.005 u0/v0 Volume - - - - - 195.548
It seems I’ll have to replace p3 with one of the two hot spares (u1 or u2). I don’t have time to research that now.
Ugh.