On Tuesday 03 March 2009 8:34:00 am Thomas wrote: > so, last week i wrote a small perl script that uses bcopy to clone every > volume from the FULL pool, that was written within the last 3 days, to offsite tapes. [snip]
> all bcopy's finished successful. > but my restore tests failed. [snip] > 1.) the bextract from the bcopied tapes shows errors on domino/notes datafiles : > > bextract JobId 0: -rw-r--r-- 1 2110 2110 3117678592 2009-02-27 22:38:34 /stage/backup/notes/data/mail/horst.nsf > 02-Mär 19:47 bextract JobId 0: Error: attribs.c:421 File size of restored file /stage/backup/notes/data/mail/horst.nsf not correct. Original 3117678592, restored 10722668181. > bextract JobId 0: -rw-r--r-- 1 2110 2110 1298399232 2009-02-27 22:50:32 /stage/backup/notes/data/mail/heinz.nsf > 02-Mär 19:55 bextract JobId 0: Error: attribs.c:421 File size of restored file /stage/backup/notes/data/mail/heinz.nsf not correct. Original 1298399232, restored 7057145936. This smells like a sparse file (*) issue - it's possible the .nsf files allocate more than is actually in there, which can cause problems for backup/restore utilities. When you back these files up originally, is "sparse=yes" specified in the FileSet resource? (*) - Sparse files are those where there is only data written to a portion of the file which is allocated in the file system. The O/S will return 0's for the "empty" sections even though those sections are not physically on the disk. When restoring a file that is sparse, if the program isn't aware of it, it'll write out the sparse areas as 0's, greatly increasing the real size of the file. http://www.bacula.org/en/rel-manual/Configuring_Director.html#SECTION001470000000000000000 > nearly 50% of the restored .nsf shows this error. > and no: the files does not change their size while the backup runs. > if i restore with bextract from the original tape and the unchanged booststrap all files are restored without errors. > is there something special with these nsf files? > i also saw this problem with directly backuped vmware disk images (.vmdk). VMWare disk images are sparse as well. Brian ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
