On Mon, April 27, 2009 02:13, Tomas Ögren wrote: > On 26 April, 2009 - Gary Mills sent me these 1,3K bytes: > >> I prefer NFS too, but the IMAP server requires POSIX semantics. >> I believe that NFS doesn't support that, at least NFS version 3. > > What non-POSIXness are you referring to, or is it just random old > thoughts that actually doesn't apply? > > Lots of people (me for instance) are using IMAP servers with data served > over NFSv3..
Depends on the IMAP server. Cyrus for example doesn't recommend/support it: > Using NFS: We don't recommend it. If you want to do it, it may possibly > work but you may also lose your email or have corrupted cyrus.* files. > You can look at the mailing list archives for more information. http://cyrusimap.web.cmu.edu/imapd/faq.html As for non-POSIXness: > In fact, because XNFS provides transparent access to remote files, it is > not possible for a process to distinguish between local and remote files > before they are used. Due to the nature of the way XNFS works, there are > some semantic differences between operations on local files and > equivalent operations on remote files. > > This appendix gives a summary of these semantic differences. Together > with "Open-System Interface Semantics over XNFS" and "Open System > Utilities Semantics over XNFS" this appendix specifies differences that > can occur when using a given utility or function with a file on a remote > file system. http://www.opengroup.org/onlinepubs/9629799/apdxa.htm It's copyright 1998, and only refers to NFSv2 and v3, so it may be out of date (especially with NFSv4[.1]). _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
