> > > > > > > > > > > breaking the mail index > > > > > > > > > > > > Tangentially query: is Dveocot smart enough to optimize > mailbox > > > > > renaming > > > > > > to do index renaming (i.e. does not try to copy or recreate > > > indices)? > > > > > > > > > > > > > > > > Dovecot is, if you use LAYOUT=index. This will use only mailbox > GUID > > > on > > > > > disk, and the folder name is only in indexes (both list index and > > > mailbox > > > > > index for recovery purposes). > > > > > > > > > > I would recommend using 2.3.21 with LAYOUT=index to avoid > problems. > > > > > > > > > > > > > So you can just add this to an existing configuration, without the > need > > > to do anything? Like eg reindex or so? I always had the impression > this > > > affects how messages are stored. > > > > > > > > mail_location = mdbox:xxxxxx:INDEX=xxxxxx:CONTROL=/xxxxxxx > > > > becomes: > > > > mail_location = > mdbox:xxxxxx:INDEX=xxxxxx:CONTROL=/xxxxxxx:LAYOUT:index > > > > > > > > Does this really speed things up? > > > > > > > > > > You can't put it on existing setup just like that, you need to do > storage > > > format migration, or copy all the folders into their GUID folders > when > > > you do this. > > > > > > It will speed things up and will also allow you to use almost > anything as > > > mailbox name. > > > > > > > I was in the process of setting up new server, it already had a few > test mailboxes on it. > > > > why do you mention this specific version 2.3.21? el9 still is at > 2.3.16. > > > > Because we have fixed issues with index layout since 2.3.16. It will work > with 2.3.16 too but there are issues you'd probably not want to deal > with, most importantly: > > - LAYOUT=index List index rebuild was missing. > - LAYOUT=index: Duplicate GUIDs were not detected. > > which were added in 2.3.17 and futher fixed in later versions. It's a > chore to dig up specific versions, so I recommend using the latest. > > > So if I add the LAYOUT:index to mail_location for my mdbox setup, it > only renames Drafts,INBOX,Junk etc to some uuid (I guess)? > > > > ├── mdbox > > │ ├── dbox-alt-root > > │ ├── mailboxes > > │ │ ├── Drafts > > │ │ │ └── dbox-Mails > > │ │ ├── INBOX > > │ │ │ ├── dbox-Mails > > │ │ │ └── test > > │ │ │ └── dbox-Mails > > │ │ ├── Junk > > │ │ │ └── dbox-Mails > > │ │ ├── NotSpam > > │ │ │ └── dbox-Mails > > │ │ ├── Sent > > │ │ │ └── dbox-Mails > > │ │ └── Trash > > │ │ └── dbox-Mails > > │ └── storage > > │ ├── m.1 > > │ ├── m.2 > > │ ├── m.3 > > │ ├── m.4 > > │ ├── m.5 > > │ └── m.6 > > > > This server is offline any way. What would be the easiest way to do > this migration? Something I can do directly on this server? > > If there are only few accounts, you can configure new mail location with > LAYOUT=index and use doveadm sync / backup to migrate mails there, then > move things over the old stuff - or copy old stuff elsewhere and do the > same to current location as new. >
I tested with this doveadm sync -u testacc 'mdbox:/home/testing/testacc/mdbox:INDEX=/home/testing/testacc/index:CONTROL=/home/testing/testacc/mail/control:LAYOUT=index' Which gives me the expectec result. But I have also an archive namespace and an alt namespace that is going to be quite a lot of moving around on this production server. Not to mention having all these messages copied. Is this really the most efficient way to migrate to such id folders? ├── index │ ├── dovecot.list.index │ ├── dovecot.list.index.log │ ├── dovecot.mailbox.log │ ├── mailboxes │ │ ├── 36179613fa3330637557000052412a8e │ │ │ ├── dovecot.index.cache │ │ │ └── dovecot.index.log │ │ ├── 67b77b07fa3330635457000052412a8e │ │ │ └── dovecot.index.log │ │ ├── 7908061cf23330634d57000052412a8e │ │ │ ├── dovecot.index.cache │ │ │ └── dovecot.index.log │ │ ├── 80628213e4f562613b27000052412a8e │ │ │ ├── dovecot.index │ │ │ ├── dovecot.index.backup │ │ │ ├── dovecot.index.cache │ │ │ └── dovecot.index.log │ │ ├── a2585d3ae5714e636229030052412a8e │ │ │ └── dovecot.index.log │ │ ├── b45e8a3819f662614d27000052412a8e │ │ │ ├── dovecot.index.cache │ │ │ └── dovecot.index.log │ │ └── c07dd6138d5d3063615b000052412a8e │ │ └── dovecot.index.log │ └── storage │ ├── dovecot.map.index │ └── dovecot.map.index.log ├── mail │ └── control │ └── subscriptions └── mdbox ├── mailboxes │ ├── 36179613fa3330637557000052412a8e │ ├── 67b77b07fa3330635457000052412a8e │ ├── 7908061cf23330634d57000052412a8e │ ├── 80628213e4f562613b27000052412a8e │ ├── a2585d3ae5714e636229030052412a8e _______________________________________________ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
