>>>>> On Thu, 23 Nov 2006 08:29:25 -0500, Bill Moran said: > > On Thu, 23 Nov 2006 10:38:41 GMT > Martin Simmons <[EMAIL PROTECTED]> wrote: > > > >>>>> On Wed, 22 Nov 2006 17:26:47 -0500, Bill Moran said: > > > > > > On Wed, 22 Nov 2006 23:11:59 +0100 > > > Andras Horvai <[EMAIL PROTECTED]> wrote: > > > > > > > What does VolFiles mean? I didn't find it in the documentation. > > > > > > I've been wondering about that. I wish one of the developers would chime > > > in here. > > > > > > I seem to remember that a trick used on tape drives is to write an EOF > > > marker every > > > so often, then when restoring, the drive can quickly seek X EOF markers > > > ahead before > > > it has to slow down to read through the data. > > > > > > If I'm understanding this correctly, there's no reason Bacula can't do > > > the same > > > thing with file volumes. If it writes an EOF marker every 4G (which it > > > seems to, > > > based on your output) it can seek() to the within 4G of the data it > > > needs, then > > > it only needs to read() through a maximum of 4G to get the data. > > > > Using EOF markers like that in a file won't work, because there is no fast > > way > > of seeking to an EOF marker (unlike on a tape). > > ?? > > If Bacula knows it's writing a file marker every 4G, why can't it just use > fseek() to skip forward?
I was just being pedantic, because it doesn't write anything for the EOF marker. __Martin > > However, it is easier than that: Bacula could seek directly to the right > > place > > in the file. IIRC, there is some code to do that but it was disabled > > because > > it didn't quite work. > > Well, that's an obvious problem ... > ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
