Greetings,
During device driver initialization on boot, a newly attached SCSI disk is seen,
but not mapped to a device file (/dev/sdc).
I am running Redhat Linux distribution v6.2 on a Dell PowerEdge 6300.
I've attached an external 'DotHill' wide/LVD SCSI disk (360WSV) to one of two
on-board Adaptec AIC 7890 SCSI adapters. This is the only device on the adapter.
I have a separate disk (a single-ended 4GB MTI) attached to the second Adaptec
adapter, which is seen and mapped to /dev/sdb.
fdisk sees the system disk (sda) and the one external data disk (sdb), but not the
new disk.
The disk _does_ appear in /proc/scsi/aic7xxx/1, but does _not_ appear in
/etc/sysconf/hwconf.
Am I overlooking a step, or should this detection be automatic?
Please note that I had to disable 'wide' negotiation within the SCSI BIOS utility
for this disk in order to prevent spewage of parity errors on device driver init.
Thanks in advance,
-Mark
[root]# fdisk -l | grep '^Disk'
Disk /dev/sda: 255 heads, 63 sectors, 4369 cylinders
Disk /dev/sdb: 255 heads, 63 sectors, 528 cylinders
dmesg output:
<snip>
Partition check:
RAMDISK: Compressed image found at block 0
autodetecting RAID arrays
autorun ...
... autorun DONE.
VFS: Mounted root (ext2 filesystem).
megaraid: v107 (December 22, 1999)
megaraid: found 0x8086:0x1960:idx 0:bus 2:slot 3:func 1
scsi0 : Found a MegaRAID controller at 0xfc80d000, IRQ: 18
megaraid: [1.01:1p00] detected 1 logical drives
scsi0 : AMI MegaRAID 1.01 254 commands 16 targs 2 chans 8 luns
scsi : 1 host.
scsi0: scanning channel 1 for devices.
Vendor: DELL Model: 1x8 U2W SCSI BP Rev: 5.35
Type: Processor ANSI SCSI revision: 02
scsi0: scanning channel 2 for devices.
scsi0: scanning virtual channel for logical drives.
Vendor: MegaRAID Model: LD0 RAID5 34272R Rev: 1.01
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi disk sda at scsi0, channel 2, id 0, lun 0
SCSI device sda: hdwr sector= 512 bytes. Sectors= 70189056 [34272 MB] [34.3 GB]
sda: sda1 sda2 < sda5 sda6 sda7 sda8 sda9 sda10 sda11 sda12 sda13 sda14 sda15 >
(scsi1) <Adaptec AIC-7890/1 Ultra2 SCSI host adapter> found at PCI 1/4/0
(scsi1) Wide Channel, SCSI ID=7, 32/255 SCBs
(scsi1) Downloading sequencer code... 396 instructions downloaded
enable_irq() unbalanced from fc821401
(scsi2) <Adaptec AIC-7890/1 Ultra2 SCSI host adapter> found at PCI 1/6/0
(scsi2) Wide Channel, SCSI ID=7, 32/255 SCBs
(scsi2) Downloading sequencer code... 396 instructions downloaded
enable_irq() unbalanced from fc821401
(scsi3) <Adaptec AIC-7860 Ultra SCSI host adapter> found at PCI 1/8/0
(scsi3) Narrow Channel, SCSI ID=7, 3/255 SCBs
(scsi3) Downloading sequencer code... 423 instructions downloaded
enable_irq() unbalanced from fc821401
scsi1 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.28/3.2.4
<Adaptec AIC-7890/1 Ultra2 SCSI host adapter>
scsi2 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.28/3.2.4
<Adaptec AIC-7890/1 Ultra2 SCSI host adapter>
scsi3 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.28/3.2.4
<Adaptec AIC-7860 Ultra SCSI host adapter>
scsi : 4 hosts.
(scsi1:0:0:0) Synchronous at 20.0 Mbyte/sec, offset 15. <== THIS DISK ISN'T MAPPED
(scsi2:0:1:0) Synchronous at 20.0 Mbyte/sec, offset 15.
Vendor: SEAGATE Model: ST34371N Rev: 0484
Type: Direct-Access ANSI SCSI revision: 02
Detected scsi disk sdb at scsi2, channel 0, id 1, lun 0
(scsi3:0:5:0) Synchronous at 20.0 Mbyte/sec, offset 15.
Vendor: NEC Model: CD-ROM DRIVE:466 Rev: 1.06
Type: CD-ROM ANSI SCSI revision: 02
Detected scsi CD-ROM sr0 at scsi3, channel 0, id 5, lun 0
sr0: scsi3-mmc drive: 17x/40x cd/rw xa/form2 cdda tray
Uniform CDROM driver Revision: 2.56
SCSI device sdb: hdwr sector= 512 bytes. Sectors= 8496884 [4148 MB] [4.1 GB]
sdb: sdb1
autodetecting RAID arrays
autorun ...
<snip>
[root]# cat /proc/scsi/aic7xxx/1
Adaptec AIC7xxx driver version: 5.1.28/3.2.4
Compile Options:
TCQ Enabled By Default : Disabled
AIC7XXX_PROC_STATS : Enabled
AIC7XXX_RESET_DELAY : 5
Adapter Configuration:
SCSI Adapter: Adaptec AIC-7890/1 Ultra2 SCSI host adapter
Ultra-2 LVD/SE Wide Controller at PCI 1/4/0
PCI MMAPed I/O Base: 0xfe302000
Adapter SEEPROM Config: SEEPROM found and used.
Adaptec SCSI BIOS: Enabled
IRQ: 21
SCBs: Active 0, Max Active 1,
Allocated 15, HW 32, Page 255
Interrupts: 69
BIOS Control Word: 0x18a6
Adapter Control Word: 0x1c5c
Extended Translation: Enabled
Disconnect Enable Flags: 0xffff
Ultra Enable Flags: 0x0000
Tag Queue Enable Flags: 0x0000
Ordered Queue Tag Flags: 0x0000
Default Tag Queue Depth: 8
Tagged Queue By Device array for aic7xxx host instance 0:
{255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255}
Actual queue depth per device for aic7xxx host instance 0:
{1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}
Statistics:
(scsi1:0:0:0)
Device using Narrow/Sync transfers at 20.0 MByte/sec, offset 15
Transinfo settings: current(12/15/0/0), goal(10/127/0/0), user(10/127/0/0)
Total transfers 0 (0 reads and 0 writes)
< 2K 2K+ 4K+ 8K+ 16K+ 32K+ 64K+ 128K+
Reads: 0 0 0 0 0 0 0 0
Writes: 0 0 0 0 0 0 0 0
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