如何通过 LTO-6 磁带读取 dar 存档

Question

该/data文件夹保存在磁带上

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dar -R /data/ -c - | mbuffer -R 110M -P 90 -m 1G | dd of=/dev/nst0 bs=256k\n

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我如何测试、列出并提取它？

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我尝试了以下方法来测试存档，但没有运气：

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# mt -f /dev/nst0 status\nSCSI 2 tape drive:\nFile number=0, block number=0, partition=0.\nTape block size 0 bytes. Density code 0x58 (no translation).\nSoft error count since last status=0\nGeneral status bits on (41010000):\n BOT ONLINE IM_REP_EN\n\n# dd if=/dev/nst0 bs=256k | dar -t -\ndd: error reading \xe2\x80\x98/dev/nst0\xe2\x80\x99: Cannot allocate memory\n0+0 records in\n0+0 records out\n0 bytes (0 B) copied, 0.00344152 s, 0.0 kB/s\nOpening a pair of pipes to read the archive, expecting dar_slave at the other ends...\n\xef\xbf\xbdFinal memory cleanup...\nFATAL error, aborting operation\nCorrupted data read on pipe\n

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Answer 1

-0对于顺序读取：

dd if=/dev/nst0 bs=256k | dar -0 -t -