Re: WebDAV folders internally have hundreds of copies of the same few files

Anatoli <me@xxxxxxxxxx> · Tue, 20 Nov 2018 04:04:17 -0300

      Hi
        Vladislav,

        Yes, I don't actually have the expunge_mode
        option in the configs, so the default "delayed"
        is applied.

        I've just tried some experiments with cyr_expire,
        the -X n option alone clears
        everything, including the shared DAV folders, but I can't find
        how to clear only some shared DAV folder. The -p and -u
        options seem not to work as intented on the shared DAV folders
        (user-owned DAV folders are cleared with -p <user> param). Any idea how to accomplish
        this?

        Regards,

        Anatoli

      From:
        Vladislav Kurz

        Sent: Monday, November 19, 2018 05:50

        To: Info-cyrus

        Subject: Re: WebDAV folders internally have hundreds of
        copies of the same few files

    On 11/14/18 2:54 PM, Ken Murchison wrote:

      On 11/13/18 10:15 PM, Anatoli wrote:

        Hi,

I'm not sure this is due to some configuration option, bug or feature,
but I'm observing some folders on Cyrus HTTP WebDAV server having
hundreds (995 at this moment to be precise) internal files in the
format "NNN." that correspond to the same file but different versions
in time.

There are 2-3 files (xls) in the folder that are edited constantly
during the day and it looks like each save operation creates a new
file. The files are of some 3-5Mb each. In the explorer/web view there
are only a couple of files with a total size of 17.5Mb, but the
reported disk usage for the folder is of 1.6Gb.

Could someone please shed some light on what's going on and how to
make each file visible to the users to be stored in only one internal
file?

Thanks,
Anatoli

Because *DAV is layered on top of an IMAP store, we have to abide by
IMAP semantics in which messages (in this case DAV resources) are
immutable.  Therefore, we can NOT overwrite an existing message in the
mailbox.  Each change MUST result in a new message.  However, the server
does mark the previous version(s) as deleted and expunged, which means
that they will eventually be removed by cyr_expire.  If you aren't
running cyr_expire, you should consider adding an event to cyrus.conf to
remove expunged messages (see -X option).

    Hello,

you probably have "expunge_mode: delayed". That's why deleted mails (and
*dav files) stay in place, until cleaned by cyr_expire as mentioned above.

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