回答:
やってみませんか?大きなファイルのscpを開始lsof /path/to/file
してから、AIXサーバーで実行し、FD列の内容を確認してください。
lsof manページから:
FD is the File Descriptor number of the file or: cwd current working directory; Lnn library references (AIX); err FD information error (see NAME column); jld jail directory (FreeBSD); ltx shared library text (code and data); Mxx hex memory-mapped type number xx. m86 DOS Merge mapped file; mem memory-mapped file; mmap memory-mapped device; pd parent directory; rtd root directory; tr kernel trace file (OpenBSD); txt program text (code and data); v86 VP/ix mapped file; FD is followed by one of these characters, describing the mode under which the file is open: r for read access; w for write access; u for read and write access; space if mode unknown and no lock character follows; `-' if mode unknown and lock character follows. The mode character is followed by one of these lock characters, describing the type of lock applied to the file: N for a Solaris NFS lock of unknown type; r for read lock on part of the file; R for a read lock on the entire file; w for a write lock on part of the file; W for a write lock on the entire file; u for a read and write lock of any length; U for a lock of unknown type; x for an SCO OpenServer Xenix lock on part of the file; X for an SCO OpenServer Xenix lock on the entire file; space if there is no lock. See the LOCKS section for more information on the lock information character. The FD column contents constitutes a single field for parsing in post-processing scripts.
これを行うと、少なくともLinuxでは、FD列が「3r」であることがわかります。これは、なんらかの読み取りロックがあることを意味しますが、その前の3が何を意味するのかわかりません。
aix
タグは大歓迎だと思います。