Re: Unable to use relocate_by_id to migrate a single mailbox from cyrus 3.4.3 to 3.6.0~beta2-1 storage?

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On 3/31/22 12:21, Andy Dorman wrote:
On 3/29/22 18:49, ellie timoney wrote:
On Tue, 29 Mar 2022, at 12:36 AM, Andy Dorman wrote:
FWIW, I noticed most of our servers never added a uuid storage directory
when they updated last weekend. Is there a setting I need to add in
imapd.conf to enable uuid storage and use relocate_by_id to move
mailboxes to it?

No, you don't need to do anything to enable uuid storage.

What might be confusing/surprising you is that no existing mailboxes are moved to uuid storage at all, until you relocate_by_id them.  But new, top level mailboxes (e.g. new users) that you create after the upgrade are created in uuid storage.  (This is why the create brand new mailboxes hierarchy -> copy files -> reconstruct trick worked.)

There is a new option "mailbox_legacy_dirs", which turns *off* uuid storage /for newly created top level mailboxes only/.  That is, if you enable "mailbox_legacy_dirs", then any new top level mailboxes will be created in the legacy storage instead of the uuid storage.  This still has no effect on existing mailboxes: existing mailboxes will remain wherever they were, and new submailboxes are always created wherever their parent is.  You can always move mailboxes to uuid storage using relocate_by_id, regardless of your "mailbox_legacy_dirs" setting.

It's usual in Cyrus for directories to be created as they're needed, and not until.  I don't know that this is definitely the case for the uuid directory, but it is consistent with how we usually do things.  Given that you haven't created any new users since the upgrade, and the mailboxes that already existed will stay where they are until you relocate_by_id them, and any new mailboxes your existing users create will be in the same place as their existing ones, it is not surprising to me that there would not be a uuid directory yet on most of your servers.

Cheers,

ellie
*Cyrus <https://cyrus.topicbox.com/latest>* / Info / see discussions


Thank you Ellie. That is very useful information.

So do you think the problem several of us are having with relocate_by_id not apparently doing anything is because we need to create the base mailbox in uuid and THEN run relocate_by_id to move the emails and sub-folders to the uuid storage?

For example, should we be do these two steps to move foo@xxxxxxxxxxxx?

1. Use cyradm to create the base mailbox, foo@xxxxxxxxxxxx. Assuming we haven't set mailbox_legacy_dirs, this should create the uuid storage for the base mailbox. This of course assumes cyradm lets us create it and doesn't complain about the mailbox already existing (in old storage).

2. Use relocate_by_id to move foo@xxxxxxxxxxxx emails and subfolders to the newly created uuid storage.

Well I just tried the steps above and step 1 failed. I can't create the mailbox in cyradm if it already exists in the old storage.

localhost.xxyyzz.com> cm user/foo@xxxxxxxxxxxx
createmailbox: Mailbox already exists

And FWIW, nothing, no syslog entries or anything that I can see, happens when I try running relocate_by_id either as root or the cyrus user.

sudo -u cyrus /usr/lib/cyrus/bin/relocate_by_id user/foo@xxxxxxxxxxxx

Actually I take that back. It appears that a new directory, "stage.", was created the first time I ran relocate_by_id. But there is nothing in it.

yorick:~# ls -al /var/spool/cyrus/mail/
total 132
drwxr-x--- 33 cyrus mail 4096 Sep  5  2010 .
drwxr-xr-x  5 cyrus mail 4096 Jul 12  2010 ..
...
...
drwx------  9 cyrus mail 4096 Mar  2  2018 domain
...
drwxr-xr-x  2 cyrus mail 4096 Nov 15  2007 s
drwxr-xr-x  2 cyrus mail 4096 Mar 31 12:31 stage.
drwxr-xr-x  2 cyrus mail 4096 Nov 15  2007 t
...
drwxr-xr-x  2 cyrus mail 4096 Nov 15  2007 z


--
Andy


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