Hi,
I'm trying to use doveadm backup but I'm having a few issues.
When trying locally:
doveadm backup -D -A maildir:/usr/local/backup
It results that no mailbox is separated by user - all seems to sync on the same folder, messing up with the folder structure of the original maildir.
When trying remotely:
doveadm backup -D -A -N ssh -i mykey root@myremotebackup.com:/backup doveadmin dsync-server -A
I get this error line for each user:
dsync-local(theuser@thedomain.com)<5DNrEXdG1l5tAgAAqsACHw>: Error: read(remote) failed: EOF (version not received) doveadm(theuser@thedomain.com): Fatal: execvp(ssh) failed: No such file or directory
I'd be very thankful if someone could help me with this.
Best,
Francis
-- Francis Augusto Medeiros-Logeay Oslo, Norway
Hi,
As said below, I am trying to use doveadm backup. I made some progress, but I think I misunderstand some of the basic principles behind the command.
My main issue is: when using the -A flag, is there a way to create the backup user on the remote server if it doesn't exist there?
Another related question: if backing up on another location on the same computer, using -A doesn't seem to recreate the structure of the original Maildir (for example, /var/mail/%d%n).
Is there a way to do that?
Best,
Francis
On 02.06.2020 14:31, Francis Augusto Medeiros-Logeay wrote:
Hi,
I'm trying to use doveadm backup but I'm having a few issues.
When trying locally:
doveadm backup -D -A maildir:/usr/local/backupIt results that no mailbox is separated by user - all seems to sync on the same folder, messing up with the folder structure of the original maildir.
When trying remotely:
doveadm backup -D -A -N ssh -i mykey root@myremotebackup.com:/backup doveadmin dsync-server -AI get this error line for each user:
dsync-local(theuser@thedomain.com)<5DNrEXdG1l5tAgAAqsACHw>: Error: read(remote) failed: EOF (version not received) doveadm(theuser@thedomain.com): Fatal: execvp(ssh) failed: No such file or directory
I'd be very thankful if someone could help me with this.
Best,
Francis
On Fri, 5 Jun 2020, Francis Augusto Medeiros-Logeay wrote:
Another related question: if backing up on another location on the same computer, using -A doesn't seem to recreate the structure of the original Maildir (for example, /var/mail/%d%n).
Is there a way to do that?
If I understand your question correctly (I may be missing context), you can use dsync for that, e.g.:
DEST=mdbox:/path/to/$MAILBOX/mdbox dsync -u $MAILBOX backup $DEST
where DEST is in "mail location" format (could also be "maildir:/path/to/Maildir") and $MAILBOX is a dovecot (virtual) user.
My backup script does this:
USERS=$(cat /etc/dovecot/virtual_passwd | cut -d: -f1) for MAILBOX in $USERS; do DEST=mdbox:/encrypted/snap_mail/$MAILBOX/mdbox dsync -v -u $MAILBOX backup $DEST done
This runs periodically and does the local "backup". Another server picks that up, also periodically, using rsync, which is the real backup.
Cheers.
On 6 Jun 2020, at 01:10, Bernardo Reino reinob@bbmk.org wrote:
On Fri, 5 Jun 2020, Francis Augusto Medeiros-Logeay wrote:
Another related question: if backing up on another location on the same computer, using -A doesn't seem to recreate the structure of the original Maildir (for example, /var/mail/%d%n).
Is there a way to do that?
If I understand your question correctly (I may be missing context), you can use dsync for that, e.g.:
DEST=mdbox:/path/to/$MAILBOX/mdbox dsync -u $MAILBOX backup $DEST
where DEST is in "mail location" format (could also be "maildir:/path/to/Maildir") and $MAILBOX is a dovecot (virtual) user.
My backup script does this:
USERS=$(cat /etc/dovecot/virtual_passwd | cut -d: -f1) for MAILBOX in $USERS; do DEST=mdbox:/encrypted/snap_mail/$MAILBOX/mdbox dsync -v -u $MAILBOX backup $DEST done
This runs periodically and does the local "backup". Another server picks that up, also periodically, using rsync, which is the real backup.
Cheers.
Thanks Bernardo. That’s what I want to do. But it’s just that it is confusing when there is a -A parameter that backups up all users, but apparently no way to specify individual paths on the destination. So I guess the -A option is only useful when backing up to a remote location that already has the same set of users.
It would be nice to be able to soecify a format for the destination path without having use loops. But loop it is, then. :)
Best,
Francis
On 05 Jun 2020, at 17:09, Bernardo Reino reinob@bbmk.org wrote:
USERS=$(cat /etc/dovecot/virtual_passwd | cut -d: -f1)
Is that a standard file? It's not one I have.
I would use (not that I have, but it seem like the way to get a list of users)
USERS=$( doveadm user '*' )
-- You start a conversation you can't even finish it You're talkin' a lot, but you're not sayin' anything When I have nothing to say, my lips are sealed Say something once, why say it again?
On Sat, 6 Jun 2020, @lbutlr wrote:
On 05 Jun 2020, at 17:09, Bernardo Reino reinob@bbmk.org wrote:
USERS=$(cat /etc/dovecot/virtual_passwd | cut -d: -f1)
Is that a standard file? It's not one I have.
No, of course not! :) That's just my userdb/passdb (passwd-file).
I would use (not that I have, but it seem like the way to get a list of users)
USERS=$( doveadm user '*' )
There was a time when user enumeration didn't work as I wanted (had userdb as static) so I did it that way. Now I can do doveadm user '*' and it returns the list of users, but didn't bother to change that (I'm talking about a total of 16 users... :)
Cheers.
participants (3)
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＠lbutlr
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Bernardo Reino
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Francis Augusto Medeiros-Logeay