Provided by: inn2_2.5.2+20110413-1build1_amd64 bug

NAME

       tdx-util - Tradindexed overview manipulation utility

SYNOPSIS

       tdx-util [-AFcgiOo] [-a article] [-f status] [-n newsgroup] [-p path] [-R path]

DESCRIPTION

       tdx-util is an administrative interface to the tradindexed overview method for INN.  It
       only works on tradindexed overview databases, not on any other type of INN overview.  It
       allows the administrator to dump various information about the internal state of the
       overview, audit it for errors, and rebuild portions of the overview database.

       The tradindexed overview method should lock properly and therefore it should be safe to
       run this utility and perform any operation it performs, including full repairs or per-
       group overview rebuilds, while the server is running.  However, note that some of the
       operations performed by this utility can take an extended period of time and will hold
       locks in the overview database during that period, which depending on what the server is
       doing may cause the server to stall until tdx-util completes its operation.

       The dump operations are -i, which dumps the master index for the overview database, -g,
       which dumps the index for an individual group, and -o and -O, which dump the overview
       information for a particular group (including the additional metadata stored in the index)
       in two different formats.  For -g, -o, and -O, the -n option must also be given to specify
       a newsgroup to operate on.

       To add a new newsgroup to the overview database, use -c.  A group must be specified with
       -n.  If the group status is something other than "y", it should be specified with -f, and
       the low and high article numbers may be specified with -a.  If only one number is given
       rather than a range, it will be taken to be the high water mark and the low mark will be
       set to 1.

       To audit the entire overview database for problems, use -A.  Any problems found will be
       reported to standard error.  Use -F to correct the errors found.

       To rebuild the database for a particular newsgroup, use -R.  The -R option takes a path to
       a directory which contains all of the articles for that newsgroup, one per file.  The
       names of the files must be the numbers of the articles in that group.  (In other words,
       this directory must be a traditional spool directory for that group.)  The -n option must
       also be given to specify the newsgroup for which the overview is being rebuilt.

       For all operations performed by tdx-util, a different overview database than the one
       specified in inn.conf may be specified using the -p option.

OPTIONS

       -A  Audit the entire overview database for problems.  This runs the internal consistency
           checks built into the tradindexed overview implementation, checking such things as the
           validity and reachability of all group index entries, the format of the individual
           overview entries, the correspondence of index entries to overview data, and similar
           such things.  No changes will be made to the database, but problems will be reported
           to standard error.

       -a article
           The article number or numbers to act on.  article is a valid NNTP range, meaning that
           it can be either a single article number or a range of article numbers (like "1-5").
           Either the start or the end (or both) of the range may be omitted, in which case they
           will be set to the first or last article number in the group.  Passing "-" for article
           is therefore equivalent to not using the -a option at all.

           Only useful in combination with the -o option to dump overview information or with -c
           to specify the low and high article numbers when creating a group.

       -c  Create a new group in the overview database.  The group must be specified with -n.
           The newsgroup status defaults to "y" but may be set with -f.  The low and high article
           numbers default to 1 and 0 respectively, but may be set with -a.  If only one number
           is given to -a, it is taken as the high article number.

       -F  Audit the entire overview database for problems, fixing them as they're detected where
           possible.  This runs the internal consistency checks built into the tradindexed
           overview implementation, checking such things as the validity and reachability of all
           group index entries, the format of the individual overview entries, the correspondence
           of index entries to overview data, and similar such things.  The strategy used when
           fixing problems is to throw away data that's unrecoverable, so be warned that using
           this option may result in inaccessible articles if their overview data has been
           corrupted.

           To see what would be changed by -F, run tdx-util with -A first.

       -f status
           When creating a newsgroup with -c, set the status of the newly created group to status
           instead of "y".  Only useful with -c.

       -g  Dump the index of a particular group.  The fields are, in order, the article number,
           the offset of the data for that article in the overview data file for that group, the
           length of the overview data, the time (in seconds since epoch) when the article
           arrived on the server, the time (in seconds since epoch) when the article should
           expire based on its Expires: header (or 0 if there is no Expires: header), and the
           storage API token of the article.

           If this option is given, the -n option must also be given to specify the newsgroup on
           which to act.

       -i  Dump the master index of the overview database.  This contains similar information to
           the server active file, such as high and low water marks and moderation status, and is
           the information that nnrpd hands out to clients.

           The fields are, in order, the newsgroup name, the high water mark, the low water mark,
           the base article number (the point at which the group index begins), the count of
           articles in the group, the group status, the time (in seconds since epoch) when that
           newsgroup was deleted or 0 if it hasn't been, and the inode of the index file for that
           group.

           A particular newsgroup can be specified with the -n option.  If -n is not given, the
           entire master index will be dumped.

       -n newsgroup
           Specify the newsgroup on which to act, required for the -i, -o, and -R options.

       -O  Dump the overview information for a newsgroup in the format used by overchan as input.
           Each line will start with the storage API token, the arrival timestamp in seconds
           since epoch, the expires timestamp in the same format (or 0 if there is no Expires:
           header), and then the overview data.

           If this option is given, the -n option must also be given to specify the newsgroup on
           which to act.  By default, all of the overview information for that newsgroup is
           dumped, but the -a option may be given to restrict the dump to the information for a
           single article.

       -o  Dump the overview information for a newsgroup, in the same format as it would be
           returned to clients but with one modification.  Appended to the end of each entry will
           be four additional pieces of data:  the article number according to the index file for
           that group labelled with "Article:", the storage API token for that article labelled
           with "Token:", the arrival date for that article on the server in RFC 5322 date format
           labelled with "Arrived:", and the expiration date for that article (from the Expires:
           header) in RFC 5322 date format if there is any, labelled with "Expires:".

           If this option is given, the -n option must also be given to specify the newsgroup on
           which to act.  By default, all of the overview information for that newsgroup is
           dumped, but the -a option may be given to restrict the dump to the information for a
           single article.

       -p path
           Act on the overview database rooted in path, overriding the overview path specified in
           inn.conf.

       -R path
           Rebuild the overview for a given group from the articles stored in path.  The articles
           must be in the form of a traditional spool directory; in other words, each article
           must be in a separate file and the name of the file must match the article number of
           the article.

           If this option is given, the -n option must also be given to specify the newsgroup on
           which to act.

EXAMPLES

       Dump the master index for the overview database in /news/overview, regardless of the
       overview path specified in inn.conf:

           tdx-util -i -p /news/overview

       Dump the group index for example.test:

           tdx-util -g -n example.test

       Dump the complete overview information for example.test:

           tdx-util -o -n example.test

       Dump the overview information for articles 45 and higher in example.test:


           tdx-util -o -n example.test -a 45-
       Create an entry for example.test with mode m and low and high article numbers of 4 and 23,
       respectively.

           tdx-util -c -n example.test -f m -a 4-23

       Audit the entire overview database for any problems:

           tdx-util -A

       Rebuild the overview information for example.test from a traditional spool directory:

           tdx-util -R <patharticles in inn.conf>/example/test -n example.test

       The last command may be useful for recovering from a bad crash or corrupted overview
       information for a particular group, if you are also using the tradspool article storage
       method.

HISTORY

       Written by Russ Allbery <rra@stanford.edu> for InterNetNews.

       $Id: tdx-util.pod 8975 2010-02-08 22:01:33Z iulius $

SEE ALSO

       makehistory(8), nnrpd(8).