In summary: to make ccache work safely on an NFS filesystem, the filesystem must be exported with no_subtree_check. Otherwise data can be lost when it renames recently-written files. :-(
---------------------- Begin forwarded message: Date: 27 Aug 2003 21:37:38 -0400 From: Trond Myklebust <trond.mykleb...@fys.uio.no> To: Martin Pool <m...@sourcefrog.net> Cc: n...@lists.sourceforge.net Subject: Re: [NFS] nfs/mmap/rename file corruption >>>>> " " == Martin Pool <m...@sourcefrog.net> writes: > - ccache runs distcc with output to a temporary file > - distcc opens, mmaps, writes to, munmaps, and closes the temporary > file > - distcc exits > - ccache renames the temporary file to its proper location in the > ccache > - ccache opens the file read only, and reads from it Is this a rename from one directory to the other? If so, are you using the 'no_subtree_check' option on the server? Without the latter option enabled, I would indeed expect the behaviour that you describe. Cheers, Trond -- Martin