Shared namespace is empty after migration to new Dovecot installation

[Aki Tuomi]

On 8.12.2019 13.13, Peter Reinhold via dovecot wrote:
> Hi all,
>
> I've used most of this weekend finalizing my migration from an old
> server running Dovecot 2.2.22 to a brand new installation running 2.3.8.
>
> In general, the migration was painless, everything just clicked, but
> checking up on the finer details post migration i've found out that
> user shared folders does not seem to work anymore, and I simply can't
> get it to work.
>
> The setups are more or less identical, biggest change is probably the
> addition of a Solr search index, and i've done very little changes in
> the configuration files.
>
> The acl_shared_dict file is being created and updated when I share a
> folder
>
> In the user thats sharing the folder, the dovecot-acl and
> dovecot-acl-list files are created and look the same.
>
> But, the user that should be reading the shared folder can not see it,
> the Shared namespace is simply empty, which it is not on the old
> installation, and namespace setup is identical across the two servers.
> (Except for the CaSiNg of the location of the index and indexpvt)
>
> Logging in and doing an IMAP command : A1 LIST "Shared/" "*" yields
> this on the old server. (I've replaced the sharing users e-mail to
> user at sharer.dk and the reading users to user at reader.dk)
>
>   A1 LIST "Shared/" "*"
>   * LIST (\HasNoChildren) "/" Shared/user at sharer.dk
>   A1 OK List completed (0.000 + 0.000 secs).
>
> and this on the new
>
>   A1 LIST "Shared/" "*"
>   A1 OK List completed (0.006 + 0.000 + 0.005 secs).
>
>
> Log output from the new server below (i've only included the events
> happening during the LIST account)
>
>
> -- New, non-working log start --
>
> Namespace : type=shared, prefix=Shared/%u/, sep=/, inbox=no,
> hidden=no, list=children, subscriptions=no
> location=maildir:/data/mail/%d/%n/maildir:INDEX=~/maildir/shared/%u:INDEXPVT:~/maildir/shared/%u
> shared: root=/var/run/dovecot, index=, indexpvt=, control=, inbox=, alt=
> fts: Indexes disabled for namespace 'Shared/%u/'
> acl: initializing backend with data: vfile
> acl: acl username = user at reader.dk
> acl: owner = 0
> acl vfile: Global ACLs disabled
>
> acl vfile: file /data/mail/reader.dk/user/maildir/dovecot-acl not found
> acl vfile: file /data/mail/reader.dk/user/maildir/.Junk/dovecot-acl
> not found
> acl vfile: file /data/mail/reader.dk/user/maildir/.Trash/dovecot-acl
> not found
> acl vfile: file /data/mail/reader.dk/user/maildir/.Sent/dovecot-acl
> not found
> auth-master: userdb lookup(user at sharer.dk): Started userdb lookup
> auth-master: conn unix:/var/run/dovecot/auth-userdb: Connecting
> auth-master: conn unix:/var/run/dovecot/auth-userdb (pid=1636,uid=0):
> Client connected (fd=16)
> auth-master: userdb lookup(user at sharer.dk): auth USER input:
> user at sharer.dk uid=120 gid=129 home=/data/mail/sharer.dk/user
> auth-master: userdb lookup(user at sharer.dk): Finished userdb lookup
> (username=user at sharer.dk uid=120 gid=129 home=/data/mail/sharer.dk/user)
> Namespace Shared/: Using permissions from : mode=0700 gid=default
>
> -- New, non-working log end --
>
>
> and here from the old, working installation
>
>
> -- Old, working log start --
>
> Namespace : type=shared, prefix=Shared/%u/, sep=/, inbox=no,
> hidden=no, list=children, subscriptions=no
> location=maildir:/data/mail/%d/%n/maildir:INDEX=~/Maildir/shared/%u:INDEXPVT=~/Maildir/shared/%u
> shared: root=/var/run/dovecot, index=, indexpvt=, control=, inbox=, alt=
> acl: initializing backend with data: vfile
> acl: acl username = user at reader.dk
> acl: owner = 0
> acl vfile: Global ACLs disabled
>
> auth input: user at sharer.dk uid=118 gid=126
> home=/data/mail/sharer.dk/user namespace/default/inbox=yes
> maildir++: root=/data/mail/sharer.dk/user/maildir,
> index=/data/mail/sharer.dk/user/Maildir/shared/user at sharer.dk,
> indexpvt=/data/mail/sharer.dk/user/Maildir/shared/user at sharer.dk,
> control=, inbox=/data/mail/sharer.dk/user/maildir, alt=
> acl: initializing backend with data: vfile
> acl: acl username = user at sharer.dk
> acl: owner = 1
> acl vfile: Global ACLs disabled
> maildir++: root=/data/mail/sharer.dk/user/maildir,
> index=/data/mail/reader.dk/user/Maildir/shared/user at sharer.dk,
> indexpvt=/data/mail/reader.dk/user/Maildir/shared/user at sharer.dk,
> control=, inbox=/data/mail/sharer.dk/user/maildir, alt=
> acl: initializing backend with data: vfile
> acl: acl username = user at reader.dk
> acl: owner = 0
> acl vfile: Global ACLs disabled
> acl vfile: reading file /data/mail/sharer.dk/user/maildir/dovecot-acl
> acl: Mailbox not in dovecot-acl-list: Shared/user at sharer.dk/Junk
> acl: Mailbox not in dovecot-acl-list: Shared/user at sharer.dk/Trash
> acl: Mailbox not in dovecot-acl-list: Shared/user at sharer.dk/Sent
> acl: Mailbox not in dovecot-acl-list: Shared/user at sharer.dk/Drafts
> acl: Mailbox not in dovecot-acl-list: Shared/user at sharer.dk/Junk
> acl: Mailbox not in dovecot-acl-list: Shared/user at sharer.dk/Trash
> acl: Mailbox not in dovecot-acl-list: Shared/user at sharer.dk/Sent
> acl: Mailbox not in dovecot-acl-list: Shared/user at sharer.dk/Drafts
>
> -- Old, working log end --
>
>
> The two logs are quite different, the new one seems to do user lookups
> via the auth socket, which the old one does not, and then just stops
> there.
>
> I'm not going to try and speculate more, I hope that someone here can
> see something from the logs, as I simply do not know how to fix this
> problem.
>
>
> -- 
> Peter Reinhold


Can you provide doveconf -n?