Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 18 Apr 2001 18:13:01 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 18 Apr 2001 18:12:52 -0400 Received: from mailout00.sul.t-online.com ([194.25.134.16]:46599 "EHLO mailout00.sul.t-online.com") by vger.kernel.org with ESMTP id convert rfc822-to-8bit; Wed, 18 Apr 2001 18:12:30 -0400 From: s-jaschke@t-online.de (Stefan Jaschke) Reply-To: stefan@jaschke-net.de Organization: jaschke-net.de To: Jens Axboe Subject: Re: Problems with Toshiba SD-W2002 DVD-RAM drive (IDE) Date: Thu, 19 Apr 2001 00:12:15 +0200 X-Mailer: KMail [version 1.1.99] Content-Type: text/plain; charset=US-ASCII Cc: linux-kernel@vger.kernel.org In-Reply-To: <01041714250400.01376@antares> <20010418123941.H492@suse.de> <20010418143953.D490@suse.de> In-Reply-To: <20010418143953.D490@suse.de> MIME-Version: 1.0 Message-Id: <01041900121500.06850@antares> Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday 18 April 2001 14:39, Jens Axboe wrote: > Please send me strace info when reading/writing to the drive (or at > least attempting to), this looks very queer indeed. > > Attached patch for 2.4.4-pre4 which fixes all known DVD-RAM ATAPI bugs. > Both pio and dma mode work fine here, using ext2, on a 9.4gb HITACHI > DVD-RAM GF-2000 drive. I'll try the patch asap. Here is a quick strace (on the SuSE 2.4.0 kernel, since my SMC Etherpower doesn't work with 2.4.3) of a read with DVD-RAM medium inserted: # strace dd if=/dev/hdc of=/dev/null bs=2k count=3 <... loading libraries ...> close(0) = 0 open("/dev/hdc", O_RDONLY|O_LARGEFILE) = 0 close(1) = 0 open("/dev/null", O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE, 0666) = 1 rt_sigaction(SIGINT, NULL, {SIG_DFL}, 8) = 0 rt_sigaction(SIGINT, {0x80493d0, [], 0x4000000}, NULL, 8) = 0 rt_sigaction(SIGQUIT, NULL, {SIG_DFL}, 8) = 0 rt_sigaction(SIGQUIT, {0x80493d0, [], 0x4000000}, NULL, 8) = 0 rt_sigaction(SIGPIPE, NULL, {SIG_DFL}, 8) = 0 rt_sigaction(SIGPIPE, {0x80493d0, [], 0x4000000}, NULL, 8) = 0 rt_sigaction(SIGUSR1, NULL, {SIG_DFL}, 8) = 0 rt_sigaction(SIGUSR1, {0x8049440, [], 0x4000000}, NULL, 8) = 0 brk(0x8054000) = 0x8054000 read(0, "", 2048) = 0 write(2, "0+0 records in\n", 150+0 records in ) = 15 write(2, "0+0 records out\n", 160+0 records out ) = 16 close(0) = 0 close(1) = 0 _exit(0) = ? -------------------------------- Writing works, the LED is blinking. (I didn't know the difference between /dev/zero and /dev/null when I did the first post. Sorry.): # strace dd if=/dev/zero of=/dev/hdc bs=2k count=3 <... loading libraries ...> close(0) = 0 open("/dev/zero", O_RDONLY|O_LARGEFILE) = 0 close(1) = 0 open("/dev/hdc", O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE, 0666) = 1 rt_sigaction(SIGINT, NULL, {SIG_DFL}, 8) = 0 rt_sigaction(SIGINT, {0x80493d0, [], 0x4000000}, NULL, 8) = 0 rt_sigaction(SIGQUIT, NULL, {SIG_DFL}, 8) = 0 rt_sigaction(SIGQUIT, {0x80493d0, [], 0x4000000}, NULL, 8) = 0 rt_sigaction(SIGPIPE, NULL, {SIG_DFL}, 8) = 0 rt_sigaction(SIGPIPE, {0x80493d0, [], 0x4000000}, NULL, 8) = 0 rt_sigaction(SIGUSR1, NULL, {SIG_DFL}, 8) = 0 rt_sigaction(SIGUSR1, {0x8049440, [], 0x4000000}, NULL, 8) = 0 brk(0x8054000) = 0x8054000 read(0, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2048) = 2048 write(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2048) = 2048 read(0, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2048) = 2048 write(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2048) = 2048 read(0, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2048) = 2048 write(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2048) = 2048 write(2, "3+0 records in\n", 153+0 records in ) = 15 write(2, "3+0 records out\n", 163+0 records out ) = 16 close(0) = 0 close(1) = 0 _exit(0) = ? ------------------------------------- But mke2fs does not work: # strace mke2fs -b 2048 /dev/hdc ... ... write(2, "mke2fs 1.19, 13-Jul-2000 for EXT"..., 52mke2fs 1.19, 13-Jul-2000 for EXT2 FS 0.5b, 95/08/09 ) = 52 stat64("/dev/hdc", {st_mode=S_IFBLK|0660, st_rdev=makedev(22, 0), ...}) = 0 open("/etc/mtab", O_RDONLY) = 3 brk(0x8050000) = 0x8050000 fstat64(3, {st_mode=S_IFREG|0644, st_size=234, ...}) = 0 old_mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x40017000 read(3, "/dev/sda3 / ext2 rw 0 0\nproc /pr"..., 4096) = 234 read(3, "", 4096) = 0 close(3) = 0 munmap(0x40017000, 4096) = 0 open("/dev/hdc", O_RDONLY|O_LARGEFILE) = 3 ioctl(3, BLKGETSIZE, 0xbffff524) = 0 close(3) = 0 open("/dev/hdc", O_RDWR|O_LARGEFILE) = 3 time(NULL) = 987630857 old_mmap(NULL, 488173568, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) brk(0x251df000) = 0x8050000 old_mmap(NULL, 2097152, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_NORESERVE, -1, 0) = 0x40159000 munmap(0x40159000, 684032) = 0 munmap(0x40300000, 364544) = 0 mprotect(0x40200000, 32768, PROT_READ|PROT_WRITE) = 0 old_mmap(NULL, 488173568, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) old_mmap(NULL, 488173568, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) close(3) = 0 write(2, "/dev/hdc", 8/dev/hdc) = 8 write(2, ": ", 2: ) = 2 write(2, "Memory allocation failed", 24Memory allocation failed) = 24 write(2, " ", 1 ) = 1 write(2, "while setting up superblock", 27while setting up superblock) = 27 ) = 1 write(2, "\n", 1 ) = 1 _exit(1) = ? ___________________________________ Another story: With the SuSE DVD-ROM in the drive, the "dd if=/dev/hdc of=/dev/null bs=2k count=3" also just reads 0 bytes as above, but the "mount -t iso9660 /dev/hdc /dvd" and then reading from /dvd succeeds. Stefan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/