Ian Turner schrieb: > On Friday 18 January 2008 13:11:35 Stefan G. Weichinger wrote: >> Any suggestion for the new parameter device_output_buffer_size, >> especially with the DLT8000? > > There are a lot of factors involved in the choice of this parameter (speed > and > latency of CPU, memory, system bus, holding disk, scsi bus, tape device, and > more), so I can't give you a number. But I can say: > - Bigger numbers will take up more memory, but never make things slower > (unless you run out of RAM!) > - The default of 1280kb should be adequate unless there is a big difference > in > speed between the holding disk and tape device.
First steps with the beta of 2.6.0 (gentoo-ebuild available here ...) : -- Tried the new naming convention "tape:/dev/nst0a", did not work: [EMAIL PROTECTED] ~ $ amlabel -f dds OLD-09 labeling tape in slot 6 (tape:/dev/nst0a): Reading label... File /dev/nst0a is not a tape device. amlabel: 1200741201.958550: Could not open device tape:/dev/nst0a. -- Edited it back to the old value: [EMAIL PROTECTED] ~ $ cd /etc/amanda/dds/ [EMAIL PROTECTED] /etc/amanda/dds $ vi amanda.conf [EMAIL PROTECTED] /etc/amanda/dds $ amlabel -f dds OLD-09 labeling tape in slot 6 (/dev/nst0a): Reading label... "/dev/nst0a" uses deprecated device naming convention; using "tape:/dev/nst0a" instead. Error reading 32768 bytes from /dev/nst0a: Cannot allocate memory Error reading Amanda header. Found an unlabeled tape. Writing label OLD-09.. Checking label... Success! -- Does that mean that I now use the old taper-code again? -- I had blocksize 2048k in my tapetype before and all the tapes are now labeled with that blocksize. I configured amanda-2.6.0 with --withmaxblocksize=4192 to give me room to test, but it seems as if either it doesn't accept this anymore or if I somehow screwed up the compile and ended up with the old binaries due to some ccache or something. Gotta look that up. [EMAIL PROTECTED] /etc/amanda/dds $ amcheck -s dds Amanda Tape Server Host Check ----------------------------- Holding disk /amhold/dds: 61412 mB disk space available, using 61312 mB "/dev/nst0a" uses deprecated device naming convention; using "tape:/dev/nst0a" instead. slot 6:read label `OLD-09', date `X'. "/dev/nst0a" uses deprecated device naming convention; using "tape:/dev/nst0a" instead. NOTE: skipping tape-writable test Tape OLD-09 label ok Server check took 20.252 seconds (brought to you by Amanda 2.6.0b1-20080117) -- I will now relabel some tapes, using the default 32k blocksize. Let's see if it gets faster. And I will research that maxblocksize-issue. Greets, Stefan
