Hi, Martin Simmons wrote: >>>>>> On Wed, 05 Jul 2006 01:14:48 +0200, Daniel Bloemer said: >> Hi, >> >> I am a bit confused about the handling of file sizes while using >> "Storage Type = File" for the sd. >> >> The following two options are clear, they limit the size of the volumes, >> if they are not limited by the hardware. >> >> 1. A record in the Storage daemon"s Device resource >> "Maximum Volume Size" >> >> 2. A record in the Director"s Pool resource >> "Maximum Volume Bytes" (so much for consistency) >> >> >> Then I found this in the documentation: >> >> Maximum File Size = size >> No more than size bytes will be written into a given logical file on >> the volume. Once this size is reached, an end of file mark is written on >> the volume and subsequent data are written into the next file. Breaking >> long sequences of data blocks with file marks permits quicker >> positioning to the start of a given stream of data and can improve >> recovery from read errors on the volume. The default is one Gigabyte. >> >> According to this entry in the documentation I would expect bacula to >> split a Volume limited by "Maximum Volume Bytes" in size into physical >> files limited by "Maximum File Size" on my harddisc. >> While testing the backup-system I changed this parameter without any >> visible effect. I have created new volumes after changing the parameter, >> to make the change effective. >> >> Can someone enlighten me about this? > > It's a confusion about the word "file" -- the "logical file" mentioned above > is a chunk of bytes within the volume. > > With Bacula's tape volumes, each logical file is represented using what is > traditionally called a "file" on the tape. > > With Bacula's file volumes, a single operating system file is used for the > whole volume and its size is limited by "Maximum Volume Bytes/Size". There is > only one logical file within the file volume.
Thanks for the info. That does explain it. Daniel -- Daniel Bloemer - BusinessCoDe GmbH Systemadministration and Support Phone: +49 (0)228 / 28925-43 http://www.business-code.de Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
