Dotaz: Fatalni problem (asi) s SCSI e

[Ondrej]

Pouzival jsem RedHat 7.2 a ten fungoval dobre. Pote co jsem presel na RH 8.0 (nikoliv upgrade) vyskytl se tento problem:

System zacne v zavislosti na fazi mesice a skvrnach na slunci v periode cca 1sec hrabat na harddisk, coz spolkne veskery vykon procesoru a je nutno restartovat.

Vetsinou se to stane po nejakem pristupu na CD-ROM, ale ne vzdy! Probiral jsem se log soubory, ktere hrozive naboptnaly a nasel jsem nize uvedene. Bohuzel vubec netusim co a jak. Domnivam se ze jde o problem s SCSI a DMA u me CD-ROM. Prosim pomozte.

Hlasky jadra:
Nov 16 14:49:16 blanka kernel: Via 686a audio driver 1.9.1
Nov 16 14:49:16 blanka kernel: PCI: Found IRQ 10 for device 00:07.5
Nov 16 14:49:16 blanka kernel: ac97_codec: AC97 Audio codec, id: 0x4943:0x4511 (ICE1232)
Nov 16 14:49:16 blanka kernel: via82cxxx: board #1 at 0xDC00, IRQ 10
Nov 16 14:49:16 blanka kernel: Enabled Via MIDI
Nov 16 14:49:16 blanka modprobe: modprobe: Can't locate module sound-service-0-3
Nov 16 14:49:16 blanka kernel: Assertion failed! buffer != NULL,via82cxxx_audio.c,via_dsp_write,line=2308
Nov 16 14:49:21 blanka kernel: Attached scsi CD-ROM sr0 at scsi0, channel 0, id 0, lun 0
Nov 16 14:49:21 blanka kernel: sr0: scsi3-mmc drive: 40x/40x writer cd/rw xa/form2 cdda tray
Nov 16 14:49:21 blanka kernel: Uniform CD-ROM driver Revision: 3.12
Nov 16 14:58:29 blanka kernel: Assertion failed! buffer != NULL,via82cxxx_audio.c,via_dsp_write,line=2308
Nov 16 14:58:49 blanka kernel: Assertion failed! buffer != NULL,via82cxxx_audio.c,via_dsp_write,line=2308
Nov 16 15:01:03 blanka kernel: scsi : aborting command due to timeout : pid 8060, scsi0, channel 0, id 0, lun 0 Test Unit Ready 00 00 00 00 00
Nov 16 15:01:13 blanka kernel: scsi : aborting command due to timeout : pid 8060, scsi0, channel 0, id 0, lun 0 Test Unit Ready 00 00 00 00 00
Nov 16 15:01:13 blanka kernel: SCSI host 0 abort (pid 8060) timed out - resetting
Nov 16 15:01:13 blanka kernel: SCSI bus is being reset for host 0 channel 0.
Nov 16 15:01:14 blanka kernel: scsi : aborting command due to timeout : pid 8060, scsi0, channel 0, id 0, lun 0 Test Unit Ready 00 00 00 00 00
...
Nov 16 15:01:22 blanka kernel: hdc: lost interrupt
Nov 16 15:01:22 blanka kernel: ide-scsi: CoD != 0 in idescsi_pc_intr
Nov 16 15:01:22 blanka kernel: hdc: DMA disabled
...
Nov 16 15:01:26 blanka kernel: sr0: CDROM (ioctl) error, command: Read TOC 02 00 00 00 00 09 00 0c 00

A pak spousta hlasek podobneho razeni:
Nov 16 15:01:26 blanka kernel: SCSI error: host 0 id 0 lun 0 return code = 27070000
Nov 16 15:01:26 blanka kernel: ^ISense class 0, sense error 0, extended sense 0
...
Nov 16 15:01:32 blanka kernel: scsi0 channel 0 : resetting for second half of retries.
...
Nov 16 15:02:51 blanka kernel: hdc: ATAPI reset complete
...
Nov 16 15:02:51 blanka kernel: hdc: status error: status=0x00 { }
Nov 16 15:02:51 blanka kernel: ide-scsi: Strange, packet command initiated

A pak musim rebootovat:
Nov 16 15:02:51 blanka kernel: SCSI error: host 0 id 0 lun 0 return code = 27070000
Nov 16 15:02:51 blanka kernel: ^ISense class 0, sense error 0, extended sense 0
Nov 16 15:02:51 blanka kernel: SCSI error: host 0 id 0 lun 0 return code = 27070000
Nov 16 15:02:51 blanka kernel: ^ISense class 0, sense error 0, extended sense 0
Nov 16 15:02:52 blanka shutdown: shutting down for system reboot
...

Odpovědi

[Jan Marek]

No, jednak to vypada, ze pouzivas emulaci scsi nad IDE a dale, ze ti jaksi podivne funguje zvukovka Zkus pomoci hdparmu vypnout DMA pro cdrom mechaniku takto: hdparm -d0 /dev/hdc Honza Marek

[Ondrej]

Zdravim opet z Windows:( Diky za odpoved, take si myslim ze hacek bude v nekde emulaci, nicmene vypnuti DMA pro cdrom nepomohlo. Emulaci SCSI pouzivam protoze bez ni nefunguje cdda2wav a cdparanoia s ni beha lepe. V Redhatu 8.0 byla ovsem uz implicitne zapnuta, v RH 7.2 jsem ji zapinal sam (podle README z cdda2wav). Zvukovka (integrovana) navzdory chybovym hlaskam zazracne funguje i ve starsich verzich.