I tried to copy a 8GB Xen domU disk image from a zvol device to an image file on an ufs filesystem, and was surprised that reading from the zvol character device doesn't detect "EOF".
On snv_66 (sparc) and snv_73 (x86) I can reproduce it, like this: # zfs create -V 1440k tank/floppy-img # dd if=/dev/zvol/dsk/tank/floppy-img of=/dev/null bs=1k count=2000 1440+0 records in 1440+0 records out (no problem on block device, we detect eof after reading 1440k) # dd if=/dev/zvol/rdsk/tank/floppy-img of=/dev/null bs=1k count=2000 2000+0 records in 2000+0 records out (Oops! No eof detected on zvol raw device after reading 1440k?) This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
