<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p>I've seen in a previous post, that the fact to do an RSYNC might
break the index.. So, I've heard that this is not recommended.
that's the reason why I decided to find a way to do a "clean"
backup and be able to come back online if needed.</p>
<p>So, do you use an RSYNC and in case of restoring the mailbox, do
you do a simple<br>
</p>
<pre> <b>doveadm</b> <b>index</b> <b>-u</b> <b>USERx</b> <b>INBOX
</b><font size="4">And that's it ? works fine ?</font><b>
</b><font size="4">
2) I will try the Backup , or Sync.. locally.. Effectively, I don't know where the problem comes from..I have effectively an NFS Mount
for the mailboxes and a VM for the Email server and that could be another another point of failure :-</font><b>(
</b><font size="4">Thanks for sharing.. I am a bit in a rush... I realized that my backup maybe not correct.. and I prefer not to discover it while running into trouble..</font><b>
</b></pre>
<div class="moz-cite-prefix">On 2/28/22 19:03, Ben Burk wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1f3a5ce7-ed36-65e9-47dc-fd6174ccc8e3@burk.tech">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<p>I'm not sure what you are attempting to do here. It looks like
you just ran a doveadm backup and the process completed for
userx with a warning that the remote system (your nfs mount)
lost a particular mailbox (possibly your indexes changed or a
mailbox was deleted). From the logs you pasted it appears the
process completed normally.</p>
<p>I personally do not use dovecot's backup or replication
processes. If I needed to I would use its replication process to
sync active data between multiple systems, but I have no need
for this as of yet. Personally I chose to create offsite backups
using rsync a long time ago, as rebuilding a mailbox
(reindexing) is very simple.</p>
<p>Try running doveadm mailbox status -u userx guid
'*' as the mailbox administrator and see if you can find that
GUID, 7e05c335174bf1608f0a02004eac7fb4. Also, see if the backup
you've written to nfs has the GUID.</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 2/27/22 23:33, Stephane Magnier
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:6cde49c9-f8fb-a003-d71c-5077d8968d44@netcourrier.com">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8">
<p>Well no ..I thought that dsync was for synchro " realtime for
2 different places ?</p>
<p>Having no 2 machines in parallel ( Just a single machine ) ,
I thought that a backup at regular interval would be enough ?</p>
<p>So, a simple backup should be done by dsync finally ?</p>
<p>Do you recommend finally NOT to do a backup ( Doveadm backup
) but a replication process ? ( <a
class="moz-txt-link-freetext"
href="https://wiki.dovecot.org/Replication"
moz-do-not-send="true">https://wiki.dovecot.org/Replication</a>
) ?<br>
</p>
<div class="moz-cite-prefix">On 2/28/22 06:24, Ben Burk wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1ff32de4-d222-45fc-999e-2aeab5f11410@burk.tech">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8">
<p>Did you try running dsync?</p>
<div class="moz-cite-prefix">On 2/27/22 23:15, Stephane
Magnier wrote:<br>
</div>
<blockquote type="cite"
cite="mid:cc127ad9-b455-c34e-d1b4-d66ff4a982c1@netcourrier.com">
<meta http-equiv="Content-Type" content="text/html;
charset=UTF-8">
<p>HI, <br>
</p>
<p>Any idea ? Any clue ?<br>
</p>
<div class="moz-cite-prefix">On 2/25/22 21:50, Stephane
Magnier wrote:<br>
</div>
<blockquote type="cite"
cite="mid:9cf5dc59-9871-b820-ad6e-96bc3c2c91e5@netcourrier.com">
<meta http-equiv="content-type" content="text/html;
charset=UTF-8">
<p>Hi</p>
<p>I've recently tried to use the Dovecadm backup to
backup the emails.. with the following syntax</p>
<p>doveadm -Dv backup -u userx
maildir:/mnt/nfs-backup/userx</p>
<p>Sounds to be OK with few emails... Some of them got a
lot of emails and one f them got an error and stop !</p>
<blockquote>
<p>dsync(userx): Debug: brain S: Import Trash: Import
change type=expunge
GUID=1725fa475d774ee19cb98dfb6737b4f1 UID=24891
hdr_hash= result=GUIDs match<br>
dsync(userx): Debug: brain S: Import Trash: Import
change type=expunge
GUID=916ed110b4b1522868be6194f1ae36ff UID=24892
hdr_hash= result=GUIDs match<br>
dsync(userx): Debug: brain S: Import Trash: Import
change type=expunge
GUID=eb8d75c530a7b02fc26b494d9006c91b UID=24893
hdr_hash= result=GUIDs match<br>
dsync(userx): Debug: brain S: Import Trash: Import
change type=expunge
GUID=aee9155875c34861fd6500f1f2f51a26 UID=24894
hdr_hash= result=GUIDs match<br>
dsync(userx): Debug: brain S: Import Trash: Last
common UID=24894. Delayed expunges=<br>
dsync(userx): Debug: brain S: Import Trash: Saved
UIDs: <br>
dsync(userx): Debug: brain S: Import Trash: Finish
update: min_next_uid=24895 min_first_recent_uid=24895
min_highest_modseq=35344 min_highest_pvt_modseq=0<br>
dsync(userx): Debug:
/mnt/nfs-backup/userx/.Trash/dovecot.index.cache:
Compressed, file_seq changed 1645803588 ->
1645803589, size=32, max_uid=24894<br>
dsync(userx): Warning: Mailbox changes caused a
desync. You may want to run dsync again: Remote lost
mailbox GUID 7e05c335174bf1608f0a02004eac7fb4 (maybe
it was just deleted?)<br>
dsync(userx): Debug: auth-master: conn
unix:/run/dovecot/auth-userdb: Disconnected:
Connection closed (fd=10)</p>
</blockquote>
<p><br>
</p>
<p>I empty the trash... exactly the same problem...</p>
<p>Any idea why this ??</p>
<p>Thanks and regards,<br>
</p>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
</blockquote>
</body>
</html>