Date: Sat, 19 May 2001 11:16:55 +0900 From: Makoto MATSUSHITA <matusita@jp.FreeBSD.org> To: current@freebsd.org Subject: Mounting CD9660 filesystem as root filesystem is broken Message-ID: <20010519111655N.matusita@jp.FreeBSD.org>
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I've send a email before about this[1], but a situation is not changed until now. My friends does confirm the situation recently[2], so I send a email again... *** It seems that recent (as of May/2001) 5-current kernel cannot mount CD9660 filesystem (usually CD-ROM) as a root filesystem. The kernel behavior is a little bit different both ATAPI CD-ROM and SCSI CD-ROM. - ATAPI CD-ROM (using 440BX/i815 motherboard, on-board IDE) As said before[1], kernel try to mount but failed. Mounting root from cd9660:cd0a setrootbyname failed iso_mountroot: can't find rootvp Root mount failed: 6 Mounting root from cd9660:acd0a setrootbyname failed iso_mountroot: can't find rootvp Root mount failed: 6 Mounting root from cd9660:wcd0a setrootbyname failed iso_mountroot: can't find rootvp Root mount failed: 6 No matter the kernel can mount root filesystem or not, it seems that src/sys/vfs_conf.c needs modification, no 'wcd' anymore:) - SCSI CD-ROM (using AHA-2940UW as SCSI HA) Unfortunately, kernel panics when it try to mount CD-ROM. Mounting root from cd9660:cd0a Fatal trap 12: page fault while in kernel mode fault virtual address = 0x28 fault code = supervisor read, page not present instruction pointer = 0x8:0xc025f4e7 stack pointer = 0x10:0xc05cedb4 frame pointer = 0x10:0xc05cedd8 code segment = base 0x0, limit 0xfffff, type 0x1b = DPL 0, pres 1, def32 1, gran 1 processor eflags = interrupt enables, resume, IOPL=0 current process = 0 (swapper) kernel: type 12 trap, code = 0 Stopped at dsioctl+0x3f: movl 0xc(%eax),%eax As a result, mounting CD9660 filesystem (formaly CD9660_ROOT) is broken in recent 5-current. Any clues? P.S.: A procedure to make a CD-ROM itself is shown in my previous email[1]. -- - Makoto `MAR' MATSUSHITA Appendix: [1] http://docs.freebsd.org/cgi/getmsg.cgi?fetch=17671+0+archive/2001/freebsd-current/20010422.freebsd-current [2] Thanks to kuriyama-san (ATAPI CD-ROM case) and motoyuki-san (SCSI CD-ROM case). To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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