Dustin, I got the same error lastnight.
hertz /gauss/export/users-j lev 3 partial taper: Error writing block: Mysterious short write on tape device: Tried 2097152, got 1052672 hertz /gauss/export/users-s lev 4 FLUSH while ejecting volume: Can't open tape device /dev/rmt/0cbn: Device busy To answer your question I only the " Can't open tape device" when I get " Mysterious short write" but the reverse is not true and this is because I have taperflush = 100 and there is not enough data for the second tape. [56][amandaba...@hertz]:~/daily% mt -f /dev/rmt/0cbn config "HP Ultrium 2", "HP Ultrium LTO 2", "CFGHPULTRIUMLTO2"; CFGHPULTRIUMLTO2 = 2,0x3B,0,0x18619,4,0x40,0x40,0x42,0x42,3,600,300,600,1200,600,600,18000; Does anyone know what the max blocksize is for the above LTO2 unit? >From my documentation the above says that the blocksize is variable. "= >2,0x3b,0" where the last zero mean variable block size. I do not see any parameter that says what the max size can be. I had been using 2048KB, which I had defined in "tapetype", when I was running Amanda 2.x and never got this error. So since is thinks that I need to give it 1M I will give it 1M block size. Q1> Is defining the block size in the "changer" section an ok place to add this parameter as below? Q2> Does anyone know what the max blocksize is for the above LTO2 unit? tapedev "c4" define changer "c4" { tpchanger "chg-robot:/dev/changer/0" changerfile "chg-zd-mtx-state" property "tape-device" "0=tape:/dev/rmt/0cbn" property "eject-before-unload" "true" property "eject-delay" "5" property "unload-delay" "5" property "use-slots" "1-30" property "load-poll" "0s poll 5s until 120s" device-property "BLOCK_SIZE" "1024k" } Thanks for all your help. Robert > -----Original Message----- > From: djmit...@gmail.com [mailto:djmit...@gmail.com] On Behalf Of > Dustin J. Mitchell > Sent: Tuesday, October 05, 2010 2:50 PM > To: McGraw, Robert P > Cc: amanda-users@amanda.org > Subject: Re: > > > On Tue, Oct 5, 2010 at 1:33 PM, McGraw, Robert P <rmcg...@purdue.edu> > wrote: > > hertz /gauss/export/users-s lev 0 partial taper: Error writing > block: Mysterious short write on tape device: Tried 2097152, got > 1052672 > > > > as amanda hit the end of tape. > > .. and you're using a block size (2M) that's bigger than your tape > drive can handle (1M). > > As for the device-busy error, do you get this error if you don't see > the "Mysterious short write"? > > Dustin > > -- > Open Source Storage Engineer > http://www.zmanda.com