Dear Debian-Community, meanwhile I found out, that the datacompression at HP C1533A-DAT-Streamer obviously isn't to activate.
That means, the tar-saving at DDS2-120m-DAT-tape stops after ca. 3,5 GByte. It makes no sense, if the datacompression is activated by the DIL-switches 1 and 2 at the streamer or to do that by mt -f /dev/st0 datcompression 1. There is no difference too, if the Media Recognition System is active or not (DIL-switch 3). tar -R counts the written blocks a 512 Byte. After end of medium are 7167695 blocks a 512 Bytes written. These are ca. 3,66 GByte. Furthermore, is there given no documentation about the DIL-switches 4 to 8 of this streamer, I couldn't find for that anything, according to LINUX ? In devices.txt in /usr/src/linux/Documentation are no declarations about "modes", st0 mode0 st0l mode1 st0m mode2 st0a mode3 Do you know, what they mean? If I do according to /dev/st0l or /dev/st0m or /dev/st0a mt -f <Device> status the the system answers: "Device not configured!" Is there generally no datacompression-support given for /dev/st0-drivers according to DDS2-SCSI-streamers? And what is to configure for st0a, l oder m switching on effectively the datacompression at DAT-streamers? Anyone experienced how to switch on the datecompression at HP C1533A-Streamer with Linux ? Many thanks, Christoph Walther mailto:[EMAIL PROTECTED]
