On Tue, 9 May 2006, Yann Le Doaré wrote: > You are right ! : > > sh-2.05b# qemu-img create /mnt/partitions/windows0/qmeu-disk 4M > Formating '/mnt/partitions/windows0/qmeu-disk', fmt=raw, size=4096 kB > sh-2.05b# ls -al /mnt/partitions/windows0/qmeu-disk > -rwxr-xr-x 1 root root 0 2006-05-09 > 23:37 /mnt/partitions/windows0/qmeu-disk > sh-2.05b# qemu-img create /mnt/partitions/windows0/qmeu-disk 40M > Formating '/mnt/partitions/windows0/qmeu-disk', fmt=raw, size=40960 kB > sh-2.05b# ls -al /mnt/partitions/windows0/qmeu-disk > -rwxr-xr-x 1 root root 0 2006-05-09 > 23:38 /mnt/partitions/windows0
IIRC creating a "raw" QEMU disc image makes use of sparse files, a concept not supported under FAT16/32. A qcow disc image should work fine. If you want to create a raw disc image on a FAT partition, use (from your example) dd if=/dev/zero of=/mnt/partitions/windows0/qmeu-disk bs=1024 count=40960 It'll take a bit longer than qemu-img would but then it's having to write out every block in the disc image to the real disc. Hope that helps. > Le lundi 08 mai 2006 à 16:12 -0500, Anthony Liguori a écrit : > > On Sun, 07 May 2006 08:13:01 +0000, Yann Le Doaré wrote: > > > > > Hi, > > > > > > It seems like qemu 0.8.0 does not accept image file from a vfat partition. > > > Is it a bug ? > > > > > > Greetings. > > > > > > Yann Le Doaré. > > > > > > > > > strace : > > > > > > open("/mnt/partitions/windows0/qmeu-disk", O_RDONLY|O_LARGEFILE) = 7 > > > read(7, "", 1024) = 0 close(7) > > > = 0 open("/mnt/partitions/windows0/qmeu-disk", > > > O_RDONLY|O_LARGEFILE) = 7 _llseek(7, 128, [128], SEEK_SET) = 0 > > > read(7, "", 4) = 0 close(7) > > > = 0 write(2, "qemu: could not open hard disk i"..., 74qemu: could > > > not open hard disk image '/mnt/partitions/windows0/qmeu-disk' ) = 74 > > > exit_group(1) = ? > > > > It's pretty clear that what's happening is that qemu opening the file and > > the filesystem is claiming it's an empty file. > > > > So, I recommend you do the following: > > > > First: > > > > du -sh /mnt/partitions/windows0/qmeu-disk > > ls -al /mnt/partitions/windows0/qmeu-disk > > > > And make sure both report a non-zero result. If either reports 0 as the > > size, then you screwed up copying the file to your vfat partition. > > > > Second: > > > > In vl.h, change: > > > > #ifndef O_LARGEFILE > > #define O_LARGEFILE 0 > > #endif > > > > To: > > > > #ifdef O_LARGEFILE > > #undef O_LARGEFILE > > #endif > > #define O_LARGEFILE 0 > > > > And if that fixes your problem, then vfat is broken when open()'d with > > O_LARGEFILE. If that's the case, you should report it as a vfat bug. > > > > Regards, > > > > Anthony Liguori > > > > > > > > _______________________________________________ > > Qemu-devel mailing list > > Qemu-devel@nongnu.org > > http://lists.nongnu.org/mailman/listinfo/qemu-devel > > > > _______________________________________________ > Qemu-devel mailing list > Qemu-devel@nongnu.org > http://lists.nongnu.org/mailman/listinfo/qemu-devel > -- Michael "Soruk" McConnell Eridani Star System MailStripper - http://www.MailStripper.eu/ - SMTP spam filter Mail Me Anywhere - http://www.MailMeAnywhere.com/ - Mobile email _______________________________________________ Qemu-devel mailing list Qemu-devel@nongnu.org http://lists.nongnu.org/mailman/listinfo/qemu-devel