Bug 27745
| Summary: | burncd denies access to other CD drives | ||
|---|---|---|---|
| Product: | Base System | Reporter: | kar_alerts <kar_alerts> |
| Component: | misc | Assignee: | freebsd-bugs (Nobody) <bugs> |
| Status: | Closed FIXED | ||
| Severity: | Affects Only Me | ||
| Priority: | Normal | ||
| Version: | 4.3-STABLE | ||
| Hardware: | Any | ||
| OS: | Any | ||
State Changed From-To: open->closed Your log shows that you are trying to read from *the burner* You cant read & write to a CDROM at the same time :) There was some misunderstanding here (sorry for creating any confusion, anyway). Actually the message "READ_TOC - ILLEGAL REQUEST" usually appears after blanking (the command is "burncd -f /dev/acd1c blank") is complete. The /dev/acd0c (CD-reader) can be mounted on /cdrom and CD-writer can be mounted on /cdrom1 (all created by sysinstall). I am not trying read the CD in the "burner" during blanking/burning process. I cannot even mount the /cdrom1 (cd-burner) when burncd is running which means I am not trying to read from the burner. When I give "mount /cdrom1" when burncd is running, i get --- cd9660: /dev/acd1c: Device busy --- Here is the sequence of the commands. (ttyv0) # cd /disk2/tmp # mount /cdrom # cp -Rv /disk2/tmp/* . (I can see the filenames being copied) (switching to ttyv1) # cd /disk2/tmp2 # mount /dev/ad0s1a on / (ufs, local) /dev/ad0s1f on /usr (ufs, local, soft-updates) procfs on /proc (procfs, local) /dev/ad1s1e on /disk2 (ufs, local, soft-updates) /dev/acd0c on /cdrom (cd9660, local, read-only) # burncd -f /dev/acd1c -s 4 data cd.iso fixate (when burncd starts, in ttyv0 the filenames being displayed, stops, the light in the CD-reader (/dev/acd0c) stops glowing. But when burncd finishes then the "cp" process resumes and the CD-reader lights starts glowing) Hope this helps. |
I have a CD-RW and a CD reader in my server. While burning CDs (in CDRW) using burncd program I was unable to access the CD in the CD reader. The kernel displayed this message: ** -- messages - start vm_fault: page read error, pid 3237 (cp) ... sio0: 538 more interrupt-level buffer overflows (total 538) ... (please refer to the dmesg output for additional messages) ** -- messages - end I faced this problem when I started "burncd" while copying files from CD in the CD reader. The "cp" process (that was running) freezed and I was unable use ctrl+c to cancel (^C just printed). But when the burncd completed, the "cp" process resumed copying files. During the "cp" freeze, the system was OK and I faced no lock-ups. Other processes were fine. In fact, I was running X and was fine. (I successfully reproduced the problem without X) Here is my dmesg: *-- dmesg start --* ... FreeBSD 4.3-STABLE #0: Tue May 29 11:53:02 GMT 2001 root@svr.mgsb.domain:/usr/src/sys/compile/SVRFW Timecounter "i8254" frequency 1193182 Hz CPU: Pentium III/Pentium III Xeon/Celeron (548.74-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x673 Stepping = 3 Features=0x387f9ff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,PN,MMX,FXSR,SSE> real memory = 536870912 (524288K bytes) avail memory = 517431296 (505304K bytes) Preloaded elf kernel "kernel" at 0xc0462000. Pentium Pro MTRR support enabled .... sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 sio0: type 16550A sio1: configured irq 3 not in bitmap of probed irqs 0 ... ad0: 19531MB <Maxtor 92048D8> [39683/16/63] at ata0-master UDMA33 ad1: 38172MB <QUANTUM FIREBALLP AS40.0> [77557/16/63] at ata0-slave UDMA33 acd0: DVD-ROM <TOSHIBA DVD-ROM SD-M1212> at ata1-master using PIO4 acd1: CD-RW <CD-RW CRX100E> at ata1-slave using PIO4 Mounting root from ufs:/dev/ad0s1a sigreturn: eflags = 0x13286 acd1: READ_TOC - ILLEGAL REQUEST asc=24 ascq=00 error=04 acd1: PREVENT_ALLOW - ILLEGAL REQUEST asc=64 ascq=00 error=04 .. acd1: READ_BIG - ILLEGAL REQUEST asc=c6 ascq=02 error=04 vm_fault: pager read error, pid 3229 (cp) acd1: READ_BIG - ILLEGAL REQUEST asc=c6 ascq=02 error=04 vm_fault: pager read error, pid 3230 (cp) acd1: READ_BIG - ILLEGAL REQUEST asc=c6 ascq=02 error=04 vm_fault: pager read error, pid 3237 (cp) sio0: 538 more interrupt-level buffer overflows (total 538) acd1: READ_TOC - ILLEGAL REQUEST asc=24 ascq=00 error=04 acd1: READ_TOC - ILLEGAL REQUEST asc=24 ascq=00 error=04 cd9660: RockRidge Extension acd1: READ_TOC - ILLEGAL REQUEST asc=24 ascq=00 error=04 acd1: READ_TOC - ILLEGAL REQUEST asc=24 ascq=00 error=04 *-- dmesg- end --* The message "vm_fault: pager read error, pid ... (cp)" can be seen in the dmesg output. Please ignore the repetitions as I was trying to reproduce the problem to make sure before filing the PR. Please contact me for any other additional info. Fix: don't know How-To-Repeat: run burncd program when copying files from the other CD drive.