[clug] Phantom discs

[Rob Shugg]

Guys
I just added a new promise sata controller and two new drives to our debian 
server. We already had md0 set up as raid1 with the two 200G drives. I added the 
new disks into a raid0 on md1. all went well until i rebooted when it complained 
about one of the 200G drives failing. I dont get any errors when the sata 
modules load and hdparm show the drives working:
/dev/sda:
  Timing buffered disk reads:  134 MB in  3.00 seconds =  44.67 MB/sec
k9:~# hdparm -t /dev/sdb

/dev/sdb:
  Timing buffered disk reads:  134 MB in  3.00 seconds =  44.67 MB/sec
k9:~# hdparm -t /dev/sdc

/dev/sdc:
  Timing buffered disk reads:  166 MB in  3.02 seconds =  54.97 MB/sec
k9:~# hdparm -t /dev/sdd

/dev/sdd:
  Timing buffered disk reads:  166 MB in  3.02 seconds =  54.97 MB/sec

though it looks like there are only 3 instances of the sata_promise module any 
ideas?

rob

k9:~# cat /proc/modules
radeon                109376   0
vmnet                  24064   4
vmmon                 141740   0 (unused)
ehci-hcd               18060   0 (unused)
usb-ohci               18152   0 (unused)
reiserfs              194644   1
raid0                   3208   1
raid1                  14256   1
md                     58848   4 [raid0 raid1]
sata_promise            4144   3
sata_sil                2928   0 (unused)
libata                 26692   0 [sata_promise sata_sil]
sd_mod                 10764   6
ide-scsi                9904   0


dmesg:
scsi5 : sata_promise
scsi6 : sata_promise
scsi7 : sata_promise
scsi8 : sata_promise
   Vendor: ATA       Model: WDC WD2000JD-00G  Rev: 02.0
   Type:   Direct-Access                      ANSI SCSI revision: 05
   Vendor: ATA       Model: WDC WD2000JD-00G  Rev: 02.0
   Type:   Direct-Access                      ANSI SCSI revision: 05
   Vendor: ATA       Model: WDC WD360GD-00FN  Rev: 35.0
   Type:   Direct-Access                      ANSI SCSI revision: 05
   Vendor: ATA       Model: WDC WD360GD-00FN  Rev: 35.0
   Type:   Direct-Access                      ANSI SCSI revision: 05
Attached scsi disk sda at scsi5, channel 0, id 0, lun 0
Attached scsi disk sdb at scsi6, channel 0, id 0, lun 0
Attached scsi disk sdc at scsi7, channel 0, id 0, lun 0
Attached scsi disk sdd at scsi8, channel 0, id 0, lun 0
SCSI device sda: 390721968 512-byte hdwr sectors (200050 MB)
  sda: unknown partition table
SCSI device sdb: 390721968 512-byte hdwr sectors (200050 MB)
  sdb: unknown partition table
SCSI device sdc: 72303840 512-byte hdwr sectors (37020 MB)
  sdc: unknown partition table
SCSI device sdd: 72303840 512-byte hdwr sectors (37020 MB)
  sdd: unknown partition table
md: md driver 0.90.0 MAX_MD_DEVS=256, MD_SB_DISKS=27
md: raid1 personality registered as nr 3
md: raid0 personality registered as nr 2
  [events: 0003f44b]
md: bind<sdb,1>
  [events: 0003f460]
md: bind<sda,2>
md: sda's event counter: 0003f460
md: sdb's event counter: 0003f44b
md: superblock update time inconsistency -- using the most recent one
md: freshest: sda
md: kicking non-fresh sdb from array!
md: unbind<sdb,1>
md: export_rdev(sdb)
md: RAID level 1 does not need chunksize! Continuing anyway.
md0: max total readahead window set to 124k
md0: 1 data-disks, max readahead per data-disk: 124k
raid1: device sda operational as mirror 1
raid1: md0, not all disks are operational -- trying to recover array
raid1: raid set md0 active with 1 out of 2 mirrors
md: recovery thread got woken up ...
md0: no spare disk to reconstruct array! -- continuing in degraded mode
md: recovery thread finished ...
md: updating md0 RAID superblock on device
md: sda [events: 0003f461]<6>(write) sda's sb offset: 195360896
  [events: 00000016]
md: bind<sdd,1>
  [events: 00000016]
md: bind<sdc,2>
md: sdc's event counter: 00000016
md: sdd's event counter: 00000016
md1: max total readahead window set to 496k
md1: 2 data-disks, max readahead per data-disk: 248k

k9:~# cat /proc/modules
radeon                109376   0
vmnet                  24064   4
vmmon                 141740   0 (unused)
ehci-hcd               18060   0 (unused)
usb-ohci               18152   0 (unused)
reiserfs              194644   1
raid0                   3208   1
raid1                  14256   1
md                     58848   4 [raid0 raid1]
sata_promise            4144   3
sata_sil                2928   0 (unused)
libata                 26692   0 [sata_promise sata_sil]
sd_mod                 10764   6
ide-scsi                9904   0
k9:~#

/dev/sda:
  Timing buffered disk reads:  134 MB in  3.00 seconds =  44.67 MB/sec
k9:~# hdparm -t /dev/sdb

/dev/sdb:
  Timing buffered disk reads:  134 MB in  3.00 seconds =  44.67 MB/sec
k9:~# hdparm -t /dev/sdc

/dev/sdc:
  Timing buffered disk reads:  166 MB in  3.02 seconds =  54.97 MB/sec
k9:~# hdparm -t /dev/sdd

/dev/sdd:
  Timing buffered disk reads:  166 MB in  3.02 seconds =  54.97 MB/sec
k9:~#





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