On Thu, Sep 27, 2012 at 20:05:38 +0000, Michael White wrote: > I am trying to get GNU Tar to do incremental backups and am running > into a hard error. I've been using GNU Tar on my HP-UX systems for [...] > but when I go to run the incremental I get this error. > > Unexpected field value in the snapshot file > Error is not recoverable: exiting now > > I got the tar-snapshot-edit utility and it calls out this file system. > > Director: /cghbck > Dev value too high: "18446744071562076161" > 4294967295
On Mon, Oct 01, 2012 at 15:10:21 +0000, Michael White wrote: > One of you talked about signed values. And that does appear to be > the case. See my output below using the above perl command. The > filesystem created as a HPUX LVM 2.2 does show a sign whereas the 1.0 [...] > -2147475455 dev_t st_dev ID of device containing file Note that this seems to indicate that dev_t is actually signed on HP-UX... which means that tar-snapshot-edit isn't strictly correct for you, since it uses "max" values for the fields taken from Linux (where dev_t is unsigned). Though happily it was "close enough", in that it seems to have flagged the field that was causing you trouble... Sergey/Paul, Although the existence of the -c option to tar-snapshot-edit does make it less urgent, Michael's case is another example where it seems like checking the values as they are being written and/or giving more information in the "unexpected field value" messages would have been helpful, as I wondered about in: http://lists.gnu.org/archive/html/bug-tar/2009-03/msg00069.html Pehaps if you are making changes to those routines in order to support signed dev_t, some of those improvements might be easy to add as well. (Though I would amend my earlier proposal to have the two messages say something like Unexpected field value in snapshot file: "<FIELD>" below minimum of <MIN> and Unexpected field value in snapshot file: "<FIELD>" above maximum of <MAX> , respectively.) Thanks. Nathan ---------------------------------------------------------------------------- Nathan Stratton Treadway - [email protected] - Mid-Atlantic region Ray Ontko & Co. - Software consulting services - http://www.ontko.com/ GPG Key: http://www.ontko.com/~nathanst/gpg_key.txt ID: 1023D/ECFB6239 Key fingerprint = 6AD8 485E 20B9 5C71 231C 0C32 15F3 ADCD ECFB 6239
