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RAW デバイスにアクセスすると Device or resource busy メッセージが返される

Solution Verified - Updated -

Issue

  • RAW デバイスにアクセスすると "Device or Resource busy" メッセージが返されますが、基本的なデバイスを読み込むことができます。
# dd if=/dev/cciss/c0d2p1 of=/dev/null bs=4k count=1k
1024+0 records in
1024+0 records out
4194304 bytes (4.2 MB) copied, 0.046056 seconds, 91.1 MB/s

# /bin/raw /dev/raw/raw30 /dev/cciss/c0d2p1
/dev/raw/raw30: bound to major 104, minor 33

# dd if=/dev/raw/raw30 of=/dev/null bs=4k count=1k
dd: opening `/dev/raw/raw30':Device or resource busy

Environment

  • Red Hat Enterprise Linux 5.7

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