Re: I need to check if stored messages are well formed.
Hi, Quoting Alvin Starr : Through a system crash and recovery I found a number of messages that were badly stored. I am now concerned that I may have other bad messages. Is there any tool/program that will check the message files themselves for things like correct headers and bodies? it depends on your cyrus Version. I think since version 2.4 cyrus uses the checksums of the message as GUID and stores it the header files. "reconstruct -G -n" should do the trick. But take a look at the manpage for additional Options. Regards Michael Menge M.MengeTel.: (49) 7071/29-70316 Universität Tübingen Fax.: (49) 7071/29-5912 Zentrum für Datenverarbeitung mail: michael.me...@zdv.uni-tuebingen.de Wächterstraße 76 72074 Tübingen Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
I need to check if stored messages are well formed.
Through a system crash and recovery I found a number of messages that were badly stored. I am now concerned that I may have other bad messages. Is there any tool/program that will check the message files themselves for things like correct headers and bodies? -- Alvin Starr || land: (905)513-7688 Netvel Inc. || Cell: (416)806-0133 al...@netvel.net || Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
Re: /var/spool/imap on ZFS
Hello, Some suggestions for general guidance: - Avoid deduplication. Maybe use compression at low level or fast algorithm to get dedup effect ALSO. With compression you get dynamic sector size also. - RAIDZn is for space, not for performance. Beware. - RAIDZn is not cheap to expand. - Place your indexes/metadata at different zpool of disks/ssd configured for absolute max performance. Indexes and metadata are "small" compared to data. Up to 20%. - RAM, more RAM, much more RAM. Did you get RAM? Is not enough. Buy more RAM. - Buy the fastest SLOG device you could. ZeusRAM is one of the suggestions. - Cyrus most writes are simultaneus variable size small random synchronous. THE nightmare for all filesystems and storage. Keep in mind. - maybe this article could help with some info: http://www.techforce.com.br/content/zfs-part-4-multithreaded-sustained-random-small-files-synchronous-write-iops Good luck. Andre Felipe Mikhail T. wrote .. I'd like to move my current spool from a single (fast) disk to ZFS. Any suggestions for the filesystem-parameters? Do I want deduplication, for example? Compression? Recordsize? Thanks! -mi Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus