解决Failure (104) Can not open backing device

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错误:

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Failure: (104) Can not open backing device.
Command 'drbdsetup attach 1 /dev/sdb1 /dev/sdb1 internal' terminated with exit code 10

遇到这个错误的时候,我们要看一下是不是已经挂在了 /dev/sbd1,如果是的话就执行:

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umount /dev/sdb1

就可以了.