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Bug #1278

Updated by martin1234 about 6 years ago

The kernel won't let disklabel write the label unless I've touched the slice before: 

 

 sweatshorts % sudo dd if=/dev/zero of=/dev/ad6 
 
 ^C25372+0 records in 
 
 25371+0 records out 
 
 12989952 bytes transferred in 2.380336 secs (5457192 bytes/sec) 
 
 1 sweatshorts % sudo fdisk -IB /dev/ad6 
 
 ******* Working on device /dev/ad6 ******* 
 
 fdisk: invalid fdisk partition table found 
 
 Warning: ending cylinder wraps, using all 1's 
 
 sweatshorts % sudo fdisk -IB /dev/ad6 
 
 ******* Working on device /dev/ad6 ******* 
 
 Warning: ending cylinder wraps, using all 1's 
 
 sweatshorts % sudo disklabel64 -w ad6s1 auto 
 
 disklabel64: ioctl DIOCWDINFO64: label magic number or checksum is wrong! 
 
 (disklabel or kernel is out of date?) 
 
 1 sweatshorts % dd if=/dev/ad6s1 of=/dev/null count=100 
 
 100+0 records in 
 
 100+0 records out 
 
 51200 bytes transferred in 0.013747 secs (3724455 bytes/sec) 
 
 sweatshorts % sudo disklabel64 -w ad6s1 auto 
 
 sweatshorts %

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