On Tuesday, February 3, 2015 at 2:05:45 PM UTC-2, Marco van Wieringen wrote: > Hilario Fochi <> writes: > > > Please report to my first post: > > A LTO-3 = 100% = 567.17GiB. As LTO3 is 400G native, that is 41.8% > > compression, I mean 400G * 1.418 = 567.17GiB. > > > > The Data on the LTO-4 tape comes from the same server, (only with more > > directories included), thus almost same data should be almost same > > compression, and I would expect it to hold twice the LTO-3 data, and > > thus the 100% would be 2 * 567.17 = 1,134.34GiB. And thus the correct > > percentage to be shown would be 80.53% . And that would be correct as > > this LTO-4 tape is not full yet. > > > > So the problem is that Bareos assumed that an LTO-4 tape is the same size > > as the LTO-3. > > > Bareos doesn't assume anything, BAT calculates using a SQL query the > average number of bytes per media type. That is is used as indication > of the number of bytes it thinks it can write to an medium of the > same media type. As you are probably mixing media types (which is a > normal practice) you won't get anything to valuable. > > If you want to knock yourself out have a look at medialist.cpp which > contains the code that populates the lists in the medialist. > > -- > Marco van Wieringen > Bareos GmbH & Co. KG Phone: +49-221-63069389 > http://www.bareos.com > > Sitz der Gesellschaft: Köln | Amtsgericht Köln: HRA 29646 > Komplementär: Bareos Verwaltungs-GmbH > Geschäftsführer: Stephan Dühr, M. Außendorf, J. Steffens, > P. Storz, M. v. Wieringen
Do you believe it is possible to implement a reading of the mounted tape Medium Type and Density Code (or any other parameter that uniquely identifies the tape capacity) so it could make a more accurate calculation? -- You received this message because you are subscribed to the Google Groups "bareos-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to bareos-users+unsubscr...@googlegroups.com. To post to this group, send email to bareos-users@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
