Re: dd command can't get the same uuid
Am Montag, 6. August 2012 schrieb Bob Proulx:
> Fnzh Xx wrote:
> > root@debian:/home/tiger# dd if=/dev/sda of=/dev/sdb bs=10240k
> > 11447+1 records in
> > 11447+1 records out
> > 120034123776 bytes (120 GB) copied, 4729.59 s, 25.4 MB/s
> > root@debian:/home/tiger# blkid
> > ...
> > why /dev/sda6 uuid don't equal /dev/sdb6 uuid?
> I expect the kernel cached the previous value. I expect you would
> need to trigger the kernel to re-probe the partitions again. Not
> sure but seems reasonable. (shrug)
> # apt-get install parted
> # partprobe
> # partprobe /dev/sdX
> The 'blkid' command also has a cache too. It might be necessary to
> flush it or tell it 'blkid -c /dev/null' to avoid it. See the man
> page for details.
An alternative to partprobe would be:
blockdev --rereadpt /dev/sdb
Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7