Inode 196617 has imagic flag set
Ted Ts'o
tytso at mit.edu
Mon Dec 6 15:46:46 UTC 2010
On Mon, Dec 06, 2010 at 02:20:24PM +0000, Keith Roberts wrote:
>
> Can I set the UUID value, with some descriptive text,(something like
> a long label name), or is the UUID only system generated?
The UUID is a Universally Unique ID; it is a 128-byte number,
constructed using the rules specified by RFC 4122. See:
http://www.ietf.org/rfc/rfc4122.txt
You can set the UUID to something else, although the only way I
suggest people make use of this functionality to use "tune2fs -U
random" after doing an image copy of a file system. The whole point
of a UUID is that it should be universally unique, and humans are
notoriously bad at picking ID's that are truly unqiue.
> The first link in the list is interesting :)
>
> I think the reason the USB has SO MANY errors on the FS is because I
> possibly unplugged it, before umounting it!
>
> I understand that the umount command flushes any disk I/O buffers
> back to the drive?
Correct; I'd do a sync after the umount just to be absolutely sure,
though. IIRC the umount doesn't wait until the USB stick has
acknowledged that it is done writing everything to flash.
- Ted
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