Aki, Thank you! Should have been more observant of the options in the example provided. Appears to be working as expected now.
-Bryan May 16, 2026 2:29 PM, "Aki Tuomi" <[email protected]> wrote: >> On 16/05/2026 21:15 EEST Bryan Simmons via dovecot <[email protected]> >> wrote: >> >> Was able to execute the process as root with "doveadm -D backup -Ru tst >> tcp:10.0.1.212:12354" after >> updating some destination side configuration options that do not appear to >> be documented in the >> link provided, but there are a few errors that I am unable to understand or >> correct. >> >> 1. Debug: open(/proc/self/io) failed: Permission denied - This file is read >> only for root and >> permissions cannot be modified. > > You can ignore this, it's a debug message. It's only relevant if you need io > statistics. > >> 2. Error: Mailbox INBOX sync: mailbox_delete failed: INBOX can't be deleted. >> - Not sure why a >> mailbox would need to be deleted other than the backup is using a delete and >> recreate to retain >> only current emails, assuming this is on the destination server. >> 3. All emails for tst account are deleted from the source server - This is a >> significant issue when >> only copies should be made for a backup. >> >> Full log is attached. >> >> Any additional insights would be greatly appreciated, Bryan > > I'm guessing you ran the backup command on source server. You should not use > -R then, only use -R > if you use it from destination server. > > doveadm backup copies *from* account *to* target. If you use -R it will copy > *to* > account *from* target*. > > Hope this helps. > > Aki > >> May 15, 2026 10:01 AM, "Aki Tuomi" <[email protected]> wrote: >> >> Yeah, you can do migration with dsync or imap between 2.3 and 2.4 >> >> Aki >> >> On 15/05/2026 16:10 EEST Bryan Simmons <[email protected]> wrote: >> >> Aki, >> >> Thank you for the guidance. Just to confirm, doveadm/imap based >> migration is the section under "Migrating Mailboxes from Another Dovecot >> Server" in the link referenced below since this migration will be >> between servers? >> >> Seems an upgrade from dovecot 2.3.21 (current version on source server) >> to 2.4.2 (installed version on the destination server) would be >> appropriate before migrating any user accounts based on information from >> some of the other posts regarding migration. >> >> Thanks , Bryan >> >> On 5/13/26 13:41, Aki Tuomi via dovecot wrote: >> On 13/05/2026 20:31 EEST Bryan Simmons via dovecot <[email protected]> >> wrote: >> >> Moving postfix and dovecot to a new server including all current users >> and emails. There exists several dovecot files in each user mail directory: >> >> dovecot.index >> dovecot.index.cache >> dovecot.index.log >> dovecot-keywords >> dovecot.list.index.log >> dovecot.mailbox.log >> dovecot-uidlist >> dovecot-uidvalidity >> dovecot-uidvalidity.612d3d34 >> >> Should these files be migrated also or will dovecot recreate them as needed? >> >> Thank you, Bryan >> >> https://doc.dovecot.org/2.4.4/core/admin/migration.html#migrating-mailboxes >> >> I would recommend seeing this. Depending on your mailbox format, it can be >> important that those >> files are copied, but I would suggest doveadm/imap based migration. >> >> Aki >> >> _______________________________________________ >> dovecot mailing list -- [email protected] >> To unsubscribe send an email to [email protected] >> _______________________________________________ >> dovecot mailing list -- [email protected] >> To unsubscribe send an email to [email protected] _______________________________________________ dovecot mailing list -- [email protected] To unsubscribe send an email to [email protected]
