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alex.blackbit
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Joined: 26 Jul 2005
Posts: 2397
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 Posted: Wed Oct 05, 2005 1:33 pm Post subject: is "asyncronous" okay for scsi devices? |
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hello, i just installed gentoo on a i686 machine with scsi periferals
dmesg shows me this output: | Code: | scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
<Adaptec aic7899 Ultra160 SCSI adapter>
aic7899: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
target0:0:0: asynchronous.
Vendor: SEAGATE Model: ST936701LC Rev: 0001
Type: Direct-Access ANSI SCSI revision: 03
scsi0:A:0:0: Tagged Queuing enabled. Depth 32
target0:0:0: Beginning Domain Validation
target0:0:0: wide asynchronous.
target0:0:0: FAST-80 WIDE SCSI 160.0 MB/s DT (12.5 ns, offset 63)
target0:0:0: Ending Domain Validation
scsi1 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
<Adaptec aic7899 Ultra160 SCSI adapter>
aic7899: Ultra160 Wide Channel B, SCSI Id=7, 32/253 SCBs
target1:0:0: asynchronous.
Vendor: PLEXTOR Model: CD-R PX-W1210S Rev: 1.06
Type: CD-ROM ANSI SCSI revision: 02
target1:0:0: Beginning Domain Validation
target1:0:0: Domain Validation skipping write tests
target1:0:0: FAST-20 SCSI 20.0 MB/s ST (50 ns, offset 16)
target1:0:0: Ending Domain Validation
(scsi1:A:1:0): refuses WIDE negotiation. Using 8bit transfers
target1:0:1: asynchronous.
Vendor: TOSHIBA Model: DVD-ROM SD-M1401 Rev: 1007
Type: CD-ROM ANSI SCSI revision: 02
target1:0:1: Beginning Domain Validation
target1:0:1: Domain Validation skipping write tests
target1:0:1: FAST-20 SCSI 20.0 MB/s ST (50 ns, offset 16)
target1:0:1: Ending Domain Validation
SCSI device sda: 71687372 512-byte hdwr sectors (36704 MB)
SCSI device sda: drive cache: write back
SCSI device sda: 71687372 512-byte hdwr sectors (36704 MB)
SCSI device sda: drive cache: write back
sda: sda1 sda2
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
sr0: scsi3-mmc drive: 32x/32x writer cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.20
Attached scsi CD-ROM sr0 at scsi1, channel 0, id 0, lun 0
sr1: scsi3-mmc drive: 40x/40x cd/rw xa/form2 cdda tray
Attached scsi CD-ROM sr1 at scsi1, channel 0, id 1, lun 0
Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0, type 0
Attached scsi generic sg1 at scsi1, channel 0, id 0, lun 0, type 5
Attached scsi generic sg2 at scsi1, channel 0, id 1, lun 0, type 5 |
all of that is okay (imo), but what about that "targetx:x : asyncronous." stuff?
i really don't know in this case, but isn't asyncronous some kind of a bad word?
as i said, i just don't know...
can somebody please clear things up for me?
thanks
alex |
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frostschutz
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Joined: 22 Feb 2005
Posts: 2977
Location: Germany
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alex.blackbit
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Joined: 26 Jul 2005
Posts: 2397
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| Posted: Wed Oct 05, 2005 2:23 pm Post subject: |
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hmm, thanks for the hint
it looks like synchronous transfer would be much faster
is there a way to "set" the transfer mode somehow? |
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jschellhaass
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Joined: 20 Jan 2004
Posts: 341
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| Posted: Thu Oct 06, 2005 8:28 pm Post subject: |
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How are the devices set in the adaptec bios?
jeff |
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