On Wed, 7 Jun 2000, Dennis DeDonatis wrote:
> If I:
>
> mt -f /dev/nst0 retension
>
> I get:
>
> sym53c876-1: unexpected disconnect
> sym53c876-1-<2,0>: COMMAND FAILED (8a ff) @df689000.
> sym53c876-1: unexpected disconnect
> sym53c876-1-<2,0>: COMMAND FAILED (8a ff) @df689000.
> scsi1 channel 0 : resetting for second half of retries.
> SCSI bus is being reset for host 1 channel 0.
> sym53c8xx_reset: pid=9956 reset_flags=1 serial_number=0 serial_number_at_timeout=0
> scsi1: device driver called scsi_done() for a syncronous reset.
> sym53c876-1: restart (scsi reset).
> sym53c876-1: Downloading SCSI SCRIPTS.
> sym53c876-1: unexpected disconnect
> sym53c876-1-<2,0>: COMMAND FAILED (8a ff) @df689000.
> sym53c876-1: unexpected disconnect
> sym53c876-1-<2,0>: COMMAND FAILED (8a ff) @df689000.
> sym53c876-1: unexpected disconnect
> sym53c876-1-<2,0>: COMMAND FAILED (8a ff) @df689000.
> st0: Error 2707007f (sugg. bt 0x20, driver bt 0x27, host bt 0x7).
The device disconnected from the SCSI BUS when the host was not expecting
it to do so (while a SCSI transaction was in progress). This is the usual
and recommended way for a SCSI device to report severe errors that cannot,
for some reason, be reported by the normal SCSI error reporting protocol
(status CHECK CONDITION followed by a REQUEST SENSE command).
As a result, there is no means to know about the reason of the problem,
since no information about the error is transmitted to the host by the
device. :(
> Here are the startup messages:
>
> scsi : 0 hosts.
> scsi : detected total.
> md.c: sizeof(mdp_super_t) = 4096
> Partition check:
> RAMDISK: Compressed image found at block 0
> autodetecting RAID arrays
> autorun ...
> .. autorun DONE.
> VFS: Mounted root (ext2 filesystem).
> sym53c8xx: at PCI bus 0, device 6, function 0
> sym53c8xx: 53c876 detected
> sym53c8xx: at PCI bus 0, device 6, function 1
> sym53c8xx: 53c876 detected
> sym53c876-0: rev=0x14, base=0xc6ffcf00, io_port=0x2000, irq=5
> sym53c876-0: ID 7, Fast-20, Parity Checking
> sym53c876-0: on-chip RAM at 0xc6fff000
> sym53c876-0: restart (scsi reset).
> sym53c876-0: Downloading SCSI SCRIPTS.
> sym53c876-1: rev=0x14, base=0xc6ffce00, io_port=0x2400, irq=10
> sym53c876-1: ID 7, Fast-20, Parity Checking
> sym53c876-1: on-chip RAM at 0xc6ffe000
> sym53c876-1: restart (scsi reset).
> sym53c876-1: Downloading SCSI SCRIPTS.
> scsi0 : sym53c8xx - version 1.3g
> scsi1 : sym53c8xx - version 1.3g
> scsi : 2 hosts.
> Vendor: COMPAQ Model: BD009122C6 Rev: B016
> Type: Direct-Access ANSI SCSI revision: 02
> Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
> sym53c876-0-<0,0>: tagged command queue depth set to 8
> Vendor: ARCHIVE Model: Python 28388-XXX Rev: 4.28
> Type: Sequential-Access ANSI SCSI revision: 02
> sym53c876-0-<0,*>: FAST-20 WIDE SCSI 40.0 MB/s (50 ns, offset 16)
> SCSI device sda: hdwr sector= 512 bytes. Sectors= 17773524 [8678 MB] [8.7 GB]
> sda: sda1 < sda5 sda6 sda7 sda8 sda9 sda10 > sda3
> autodetecting RAID arrays
> autorun ...
> .. autorun DONE.
> VFS: Mounted root (ext2 filesystem) readonly.
>
> Can anyone help me figure out what is wrong? What other
> information do you need? I am running RedHat v6.1 with kernel
> 2.2.14-12.
May-be the drive has mechanical problems or encountered a problem with the
media.
G�rard.
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