On Wed, Feb 20, 2008 at 01:42:59AM -0700, Matthew Mulrooney wrote:
> Hi there, I'm back with another LSI controller, and I'm experiencing
> problems with creating hot spares from bioctl. This seems to be the
> same
> problem that I posted to misc@ on Oct 16, 2006 with the subject line of:
>
> [ami] Unable to set "Hot Spare" on MegaRAID SATA 300-8x
>
> I've got the same symptoms, but now with a PERC 4/Di controller. [And
> this
> time I've found a better work around than just avoiding bioctl -H with
> this
> LSI controller :).]
>
> Problem summary
> ===============
> When I use bioctl to mark an Unused drive as a Hot Spare, that drive
> will
> fail to be integrated when another disk fails.
>
> The only way, that I've found, to make that drive properly act as a Hot
> Spare, is to only set it as such from the LSI boot menu. If you have
> already marked it as a Hot Spare from bioctl, pull the Hot Spare-marked
> drive, and replace it (it can be the same physical disk). At that point
> your disk should be showing up as an 'Unused' disk, from where you can
> go
> do the thing in the LSI boot menu.
>
> This is an improvement over my 2006 analysis of the situation, where I
> couldn't find a way to reset the drive back to Unused (after Hot Sparing
> it
> from bioctl). The LSI boot menu requires a drive to be in an Unused
> state
> before it will allow me to correctly mark it as a Hot Spare.
>
>
> If you're interested, please let me know what I can do to be of
> assistance
> in trouble shooting this. I have a limited window before this box will
> have to be pushed into production, and I can live with the current
> situation (an after hours reboot in the case of a drive failure is
> perfectly fine).
>
> Matthew
>
>
> Test case
> =========
> s => step succeeded
> F => step failed
>
> Normal case (RAID 1 + one hot spare)
> -----------
> s Configure array from the LSI boot menu
> s Clear configuration
> s New configuration
> s Disks 0, 1: RAID 1 array
> s Disk 2: Hot spare
>
> s Install OpenBSD-4.2
>
> s Single disk failure
> s Disk 0: Fails (I pulled it from the hot swap cage)
> s Disk 2: Automatically replaces it
> s Observe the RAID 1 array get fully rebuilt
>
> s Replace failed disk
> s Replace Disk 0 with a new disk
> s Observe that Disk 0 is marked as "Unused" through bioctl
> s Set Disk 0 to be a hot spare (through bioctl)
>
> s Single disk failure
> s Disk 1: Fails (I pulled it)
> F Disk 0: FAILS TO GET INTEGRATED, DESPITE STILL BEING MARKED AS A
> HOT SPARE - Array is still degraded.
>
> s Reboot, enter into the LSI boot menu
> s Configure > View/Add Configurarion
> s Highlight disk 0 > F4 (hot spare)
> s "This Physical Drive is already a HOTSPARE\nPress any key to
> continue"
> s F10 (Configure), Esc, Esc
> s "Exit?" = YES
> s "Please REBOOT YOUR SYSTEM", CTRL-ALT-DEL
>
> s Recheck array
> F Disk 0: Still failing to integrate. Array still degraded.
>
> s Attempt to shake loose the 'Hot Spare' bit from disk 0
> s Remove disk 0
> s Replace disk 0 (with the same physical disk)
> s Disk 0 is *no longer* marked as a 'Hot Spare' (either through
> bioctl or through the LSI boot menu). Yeah! :)
> [I don't think I tested this method with my SATA 300-8x.]
>
>
> Log file
> ========
> # The output is generated by:
> # date; bioctl ami0
>
> ##############################################################################
> # Created a new RAID 1 array from the LSI boot menu and installed
> OpenBSD 4.2
> Tue Feb 19 04:01:42 MST 2008
> Volume Status Size Device
> ami0 0 Scrubbing 146695782400 sd0 RAID1 3% done
> 0 Online 146811125760 0:0.0 safte0 <MAXTOR
> ATLAS10K5_146SCAJNZM>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
> ami0 1 Hot spare 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> Tue Feb 19 10:02:15 MST 2008
> Volume Status Size Device
> ami0 0 Scrubbing 146695782400 sd0 RAID1 94% done
> 0 Online 146811125760 0:0.0 safte0 <MAXTOR
> ATLAS10K5_146SCAJNZM>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
> ami0 1 Hot spare 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> Tue Feb 19 10:12:15 MST 2008
> Volume Status Size Device
> ami0 0 Scrubbing 146695782400 sd0 RAID1 97% done
> 0 Online 146811125760 0:0.0 safte0 <MAXTOR
> ATLAS10K5_146SCAJNZM>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
> ami0 1 Hot spare 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> ##############################################################################
> # Mirroring complete
> Tue Feb 19 10:22:16 MST 2008
> Volume Status Size Device
> ami0 0 Online 146695782400 sd0 RAID1
> 0 Online 146811125760 0:0.0 safte0 <MAXTOR
> ATLAS10K5_146SCAJNZM>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
> ami0 1 Hot spare 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> ##############################################################################
> # Pulling Drive 0:0.0
> Tue Feb 19 16:15:15 MST 2008
> Volume Status Size Device
> ami0 0 Online 146695782400 sd0 RAID1
> 0 Online 146811125760 0:0.0 safte0 <MAXTOR
> ATLAS10K5_146SCAJNZM>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
> ami0 1 Hot spare 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> ##############################################################################
> # LSI boot menu-defined 'Hot Spare' has been integrated
> Tue Feb 19 16:15:26 MST 2008
> Volume Status Size Device
> ami0 0 Rebuild 146695782400 sd0 RAID1 0% done
> 0 Rebuild 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
>
> Tue Feb 19 17:06:14 MST 2008
> Volume Status Size Device
> ami0 0 Rebuild 146695782400 sd0 RAID1 18% done
> 0 Rebuild 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
>
> Tue Feb 19 20:46:38 MST 2008
> Volume Status Size Device
> ami0 0 Rebuild 146695782400 sd0 RAID1 98% done
> 0 Rebuild 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
>
> Tue Feb 19 20:56:39 MST 2008
> Volume Status Size Device
> ami0 0 Online 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
>
> ##############################################################################
> # Mirroring complete
> Tue Feb 19 21:06:40 MST 2008
> Volume Status Size Device
> ami0 0 Online 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
>
> Tue Feb 19 21:46:45 MST 2008
> Volume Status Size Device
> ami0 0 Online 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
>
> ##############################################################################
> # Replaced 0:0.0
> Tue Feb 19 21:49:59 MST 2008
> Volume Status Size Device
> ami0 0 Online 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
> ami0 1 Unused 146811125760 0:0.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> ##############################################################################
> # Marking 0:0.0 as Hot Spare from bioctl (bioctl -H 0:0.0 ami0)
> Tue Feb 19 21:51:56 MST 2008
> Volume Status Size Device
> ami0 0 Online 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
> ami0 1 Unused 146811125760 0:0.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> Tue Feb 19 21:52:07 MST 2008
> Volume Status Size Device
> ami0 0 Online 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Online 146811125760 0:1.0 safte0 <SEAGATE ST3146807LC
> DS09>
> ami0 1 Hot spare 146811125760 0:0.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> ##############################################################################
> # Pulling 0:1.0
> Tue Feb 19 21:53:02 MST 2008
> Volume Status Size Device
> ami0 0 Degraded 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Failed 146811125760 0:1.0 safte0 <>
> ami0 1 Hot spare 146811125760 0:0.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> ##############################################################################
> # bioctl-defined Hot Spare 0:1.0 has failed to integrate
> Tue Feb 19 21:53:15 MST 2008
> Volume Status Size Device
> ami0 0 Degraded 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Failed 146811125760 0:1.0 safte0 <>
> ami0 1 Hot spare 146811125760 0:0.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> Tue Feb 19 21:53:37 MST 2008
> Volume Status Size Device
> ami0 0 Degraded 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Failed 146811125760 0:1.0 safte0 <>
> ami0 1 Hot spare 146811125760 0:0.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> Tue Feb 19 22:06:04 MST 2008
> Volume Status Size Device
> ami0 0 Degraded 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Failed 146811125760 0:1.0 safte0 <>
> ami0 1 Hot spare 146811125760 0:0.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> ##############################################################################
> # System rebooted - no change
> Tue Feb 19 22:25:56 MST 2008
> Volume Status Size Device
> ami0 0 Degraded 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Failed 146811125760 0:1.0 safte0 <>
> ami0 1 Hot spare 146811125760 0:0.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> Wed Feb 20 00:50:21 MST 2008
> Volume Status Size Device
> ami0 0 Degraded 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Failed 146811125760 0:1.0 safte0 <>
> ami0 1 Hot spare 146811125760 0:0.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> ##############################################################################
> # Pulling drive 0 (in an attempt to undo the bioctl hot sparing)
> Wed Feb 20 00:50:44 MST 2008
> Volume Status Size Device
> ami0 0 Degraded 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Failed 146811125760 0:1.0 safte0 <>
>
> ##############################################################################
> # Replaced drive 0
> Wed Feb 20 00:51:07 MST 2008
> Volume Status Size Device
> ami0 0 Degraded 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Failed 146811125760 0:1.0 safte0 <>
> ami0 1 Unused 146811125760 0:0.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> ##############################################################################
> # Success! That drive is back to a status of Unused!!
> Wed Feb 20 00:51:18 MST 2008
> Volume Status Size Device
> ami0 0 Degraded 146695782400 sd0 RAID1
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Failed 146811125760 0:1.0 safte0 <>
> ami0 1 Unused 146811125760 0:0.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> ##############################################################################
> # Rebooted and set drive 0 to Hot Spare from the LSI boot menu
> Wed Feb 20 01:08:06 MST 2008
> Volume Status Size Device
> ami0 0 Rebuild 146695782400 sd0 RAID1 1% done
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Rebuild 146811125760 0:0.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
> ##############################################################################
> # Success! The array is rebuilding!
> Wed Feb 20 01:18:07 MST 2008
> Volume Status Size Device
> ami0 0 Rebuild 146695782400 sd0 RAID1 5% done
> 0 Online 146811125760 0:2.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
> 1 Rebuild 146811125760 0:0.0 safte0 <IBM
> IC35L146UCDY10-0S27F>
>
>
>
>
> System configuration (dmesg)
> =====
> OpenBSD 4.2 (GENERIC.MP) #252: Tue Aug 28 10:53:04 MDT 2007
> [EMAIL PROTECTED]:/usr/src/sys/arch/i386/compile/GENERIC.MP
> cpu0: Intel(R) Xeon(TM) CPU 2.40GHz ("GenuineIntel" 686-class) 2.40 GHz
> cpu0:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,CNXT-ID,xTPR
> real mem = 2146861056 (2047MB)
> avail mem = 2068238336 (1972MB)
> mainbus0 at root
> bios0 at mainbus0: AT/286+ BIOS, date 02/21/05, BIOS32 rev. 0 @ 0xffe90,
> SMBIOS rev. 2.3 @ 0xfaf40 (71 entries)
> bios0: vendor Dell Computer Corporation version "A14" date 02/21/2005
> bios0: Dell Computer Corporation PowerEdge 2600
> pcibios0 at bios0: rev 2.1 @ 0xf0000/0x10000
> pcibios0: PCI IRQ Routing Table rev 1.0 @ 0xfc160/224 (12 entries)
> pcibios0: PCI Interrupt Router at 000:31:0 ("Intel 82801CA LPC" rev
> pcibios0: 0x00)
> pcibios0: PCI bus #11 is the last bus
> bios0: ROM list: 0xc0000/0x8000 0xc8000/0x2200 0xec000/0x4000!
> acpi at mainbus0 not configured
> ipmi0 at mainbus0: version 1.0 interface BT iobase 0xe4/3 spacing 1 irq
> 10
> mainbus0: Intel MP Specification (Version 1.4)
> cpu0 at mainbus0: apid 0 (boot processor)
> cpu0: apic clock running at 132 MHz
> cpu1 at mainbus0: apid 6 (application processor)
> cpu1: Intel(R) Xeon(TM) CPU 2.40GHz ("GenuineIntel" 686-class) 2.40 GHz
> cpu1:
FPU,V86,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CFLUSH,DS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,SBF,CNXT-ID,xTPR
> mainbus0: bus 0 is type PCI
> mainbus0: bus 1 is type PCI
> mainbus0: bus 2 is type PCI
> mainbus0: bus 3 is type PCI
> mainbus0: bus 4 is type PCI
> mainbus0: bus 5 is type PCI
> mainbus0: bus 6 is type PCI
> mainbus0: bus 7 is type PCI
> mainbus0: bus 8 is type PCI
> mainbus0: bus 9 is type PCI
> mainbus0: bus 10 is type PCI
> mainbus0: bus 11 is type PCI
> mainbus0: bus 12 is type ISA
> ioapic0 at mainbus0: apid 8 pa 0xfec00000, version 20, 24 pins
> ioapic0: misconfigured as apic 0, remapped to apid 8
> ioapic1 at mainbus0: apid 9 pa 0xfec80000, version 20, 24 pins
> ioapic1: misconfigured as apic 0, remapped to apid 9
> ioapic2 at mainbus0: apid 10 pa 0xfec81000, version 20, 24 pins
> ioapic2: misconfigured as apic 0, remapped to apid 10
> ioapic3 at mainbus0: apid 11 pa 0xfec82000, version 20, 24 pins
> ioapic3: misconfigured as apic 0, remapped to apid 11
> ioapic4 at mainbus0: apid 12 pa 0xfec82800, version 20, 24 pins
> ioapic4: misconfigured as apic 0, remapped to apid 12
> pci0 at mainbus0 bus 0: configuration mode 1 (no bios)
> pchb0 at pci0 dev 0 function 0 "Intel E7501 MCH Host" rev 0x01
> ppb0 at pci0 dev 2 function 0 "Intel E7500 MCH" rev 0x01
> pci1 at ppb0 bus 1
> "Intel 82870P2 IOxAPIC" rev 0x04 at pci1 dev 28 function 0 not
> configured
> ppb1 at pci1 dev 29 function 0 "Intel 82870P2 PCIX-PCIX" rev 0x04
> pci2 at ppb1 bus 2
> fxp0 at pci2 dev 2 function 0 "Intel 8255x" rev 0x0d, i82550: apic 9 int
> 0 (irq 5), address 00:02:b3:e8:25:b2
> inphy0 at fxp0 phy 1: i82555 10/100 PHY, rev. 4
> "Intel 82870P2 IOxAPIC" rev 0x04 at pci1 dev 30 function 0 not
> configured
> ppb2 at pci1 dev 31 function 0 "Intel 82870P2 PCIX-PCIX" rev 0x04
> pci3 at ppb2 bus 3
> em0 at pci3 dev 1 function 0 "Intel PRO/1000XT (82544GC)" rev 0x02: apic
> 9 int 4 (irq 5), address 00:0f:1f:67:39:ea
> ppb3 at pci0 dev 3 function 0 "Intel E7500 MCH" rev 0x01
> pci4 at ppb3 bus 4
> "Intel 82870P2 IOxAPIC" rev 0x04 at pci4 dev 28 function 0 not
> configured
> ppb4 at pci4 dev 29 function 0 "Intel 82870P2 PCIX-PCIX" rev 0x04
> pci5 at ppb4 bus 5
> "Intel 82870P2 IOxAPIC" rev 0x04 at pci4 dev 30 function 0 not
> configured
> ppb5 at pci4 dev 31 function 0 "Intel 82870P2 PCIX-PCIX" rev 0x04
> pci6 at ppb5 bus 6
> ppb6 at pci0 dev 4 function 0 "Intel E7500 MCH" rev 0x01
> pci7 at ppb6 bus 7
> "Intel 82870P2 IOxAPIC" rev 0x04 at pci7 dev 28 function 0 not
> configured
> ppb7 at pci7 dev 29 function 0 "Intel 82870P2 PCIX-PCIX" rev 0x04
> pci8 at ppb7 bus 8
> ami0 at pci8 dev 8 function 0 "Dell PERC 4/Di i960" rev 0x01: apic 11
> int 0 (irq 11)
> ami0: Dell 123, 64b/lhc, FW 251X, BIOS v1.07, 128MB RAM
> ami0: 2 channels, 0 FC loops, 1 logical drives
> scsibus0 at ami0: 40 targets
> sd0 at scsibus0 targ 0 lun 0: <AMI, Host drive #00, > SCSI2 0/direct
> fixed
> sd0: 139900MB, 17834 cyl, 255 head, 63 sec, 512 bytes/sec, 286515200 sec
> total
> scsibus1 at ami0: 16 targets
> safte0 at scsibus1 targ 6 lun 0: <PE/PV, 1x6 SCSI BP, 1.1> SCSI2
> 3/processor fixed
> scsibus2 at ami0: 16 targets
> "Intel 82870P2 IOxAPIC" rev 0x04 at pci7 dev 30 function 0 not
> configured
> ppb8 at pci7 dev 31 function 0 "Intel 82870P2 PCIX-PCIX" rev 0x04
> pci9 at ppb8 bus 10
> uhci0 at pci0 dev 29 function 0 "Intel 82801CA/CAM USB" rev 0x02: apic 8
> int 16 (irq 11)
> ppb9 at pci0 dev 30 function 0 "Intel 82801BA AGP" rev 0x42
> pci10 at ppb9 bus 11
> vga1 at pci10 dev 4 function 0 "ATI Rage XL" rev 0x27
> wsdisplay0 at vga1 mux 1: console (80x25, vt100 emulation)
> wsdisplay0: screen 1-5 added (80x25, vt100 emulation)
> ichpcib0 at pci0 dev 31 function 0 "Intel 82801CA LPC" rev 0x02: 24-bit
> timer at 3579545Hz
> pciide0 at pci0 dev 31 function 1 "Intel 82801CA IDE" rev 0x02: DMA,
> channel 0 configured to compatibility, channel 1 configured to
> compatibility
> atapiscsi0 at pciide0 channel 0 drive 0
> scsibus3 at atapiscsi0: 2 targets
> cd0 at scsibus3 targ 0 lun 0: <TEAC, CD-224E, K.9A> SCSI0 5/cdrom
> removable
> cd0(pciide0:0:0): using PIO mode 4, Ultra-DMA mode 2
> pciide0: channel 1 disabled (no drives)
> usb0 at uhci0: USB revision 1.0
> uhub0 at usb0: Intel UHCI root hub, rev 1.00/1.00, addr 1
> isa0 at ichpcib0
> isadma0 at isa0
> pckbc0 at isa0 port 0x60/5
> pckbd0 at pckbc0 (kbd slot)
> pckbc0: using irq 1 for kbd slot
> wskbd0 at pckbd0: console keyboard, using wsdisplay0
> pcppi0 at isa0 port 0x61
> midi0 at pcppi0: <PC speaker>
> spkr0 at pcppi0
> lpt0 at isa0 port 0x378/4 irq 7
> npx0 at isa0 port 0xf0/16: reported by CPUID; using exception 16
> pccom0 at isa0 port 0x3f8/8 irq 4: ns16550a, 16 byte fifo
> pccom1 at isa0 port 0x2f8/8 irq 3: ns16550a, 16 byte fifo
> fdc0 at isa0 port 0x3f0/6 irq 6 drq 2
> fd0 at fdc0 drive 0: 1.44MB 80 cyl, 2 head, 18 sec
> fd1 at fdc0 drive 1: density unknown
> pctr: user-level cycle counter enabled
> mtrr: Pentium Pro MTRR support
> dkcsum: sd0 matches BIOS drive 0x80
> root on sd0a swap on sd0b dump on sd0b
