Re: Backing up m(d)box - rsync?
> On 19 Aug 2023, at 00:31, Stuart Henderson wrote: > > On 2023-08-16, Gareth Evans wrote: >> >> ... however it relies on doveadm which I don't have access to on a shared >> host. >> >> I am looking into IMAP-based "doveadm backup" (ie running doveadm elsewhere) >> but I fear this will require an admin username/password which wouldn't be >> accessible on a shared host. > > If you don't have admin access to add a master password configuration, > but do have the account passwords for the various you want to backup, > separate backup runs with either dovecot tools using imapc, or any > standard imap sync programs, are probably simplest. > >> I would be grateful if anyone can offer insight re the rsync query. > > I guess you'd probably need at least mmap_disable=yes on the server, > but I don't know enough about it to know whether that will be enough > by itself. OK thanks very much Gareth > > > ___ > dovecot mailing list -- dovecot@dovecot.org > To unsubscribe send an email to dovecot-le...@dovecot.org ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
Re: Backing up m(d)box - rsync?
On 2023-08-16, Gareth Evans wrote: > > ... however it relies on doveadm which I don't have access to on a shared > host. > > I am looking into IMAP-based "doveadm backup" (ie running doveadm elsewhere) > but I fear this will require an admin username/password which wouldn't be > accessible on a shared host. If you don't have admin access to add a master password configuration, but do have the account passwords for the various you want to backup, separate backup runs with either dovecot tools using imapc, or any standard imap sync programs, are probably simplest. > I would be grateful if anyone can offer insight re the rsync query. I guess you'd probably need at least mmap_disable=yes on the server, but I don't know enough about it to know whether that will be enough by itself. ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
Re: Backing up m(d)box - rsync?
... however it relies on doveadm which I don't have access to on a shared host. I am looking into IMAP-based "doveadm backup" (ie running doveadm elsewhere) but I fear this will require an admin username/password which wouldn't be accessible on a shared host. I would be grateful if anyone can offer insight re the rsync query. Thanks Gareth > On 16 Aug 2023, at 16:04, Gareth Evans wrote: > > Actually it's fine, I had copied/pasted your "regards" too by mistake > > Thanks > G > > > >> On 16 Aug 2023, at 15:59, Gareth Evans wrote: >> >> Thanks Sven but I get a 404 from that link. >> Gareth >> >>>> On 16 Aug 2023, at 15:21, sven_roellig via dovecot >>>> wrote: >>> >>> i use https://github.com/tachtler/dovecot-backupregards sven >>> ---- Ursprüngliche Nachricht Von: donots...@fastmail.fm Datum: >>> 16.08.23 15:29 (GMT+01:00) An: dovecot@dovecot.org Betreff: Backing up >>> m(d)box - rsync? Hello,I manage a small number of email accounts for a >>> voluntary organisation on a shared hosting platform.$ dovecot >>> --version2.3.13 (89f716dc2)I would like to keep automated local backups, >>> but do not have access to doveadm.I have seen a couple of forum posts where >>> users have have suggested that using rsync to backup m(d)box folders can >>> corrupt dovecot's indexes, but there is no further explanation, and this is >>> apparently not a problem for maildir. Our host seems to use mdbox.Does >>> doveadm provide some sort of transaction/locking mechanism to prevent >>> consistency problems? Others seem to recommend using tar but I don't see >>> what difference that should make.Given that cpanel backups (provided as >>> tar.gz archives of the home directory) include mail/ and seem to be copies >>> of the filesystem at a particular time (though not true "snapshots" as >>> such), aren't these just as "safe" as an rsync-ed backup?Can anyone >>> confirm/deny/shed any light on the issue(s), if indeed any?Many >>> thanks,Gareth___dovecot mailing >>> list -- dovecot@dovecot.orgTo unsubscribe send an email to >>> dovecot-le...@dovecot.org >>> ___ >>> dovecot mailing list -- dovecot@dovecot.org >>> To unsubscribe send an email to dovecot-le...@dovecot.org ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
Re: Backing up m(d)box - rsync?
Actually it's fine, I had copied/pasted your "regards" too by mistake Thanks G > On 16 Aug 2023, at 15:59, Gareth Evans wrote: > > Thanks Sven but I get a 404 from that link. > Gareth > >> On 16 Aug 2023, at 15:21, sven_roellig via dovecot >> wrote: >> >> i use https://github.com/tachtler/dovecot-backupregards sven >> Ursprüngliche Nachricht Von: donots...@fastmail.fm Datum: >> 16.08.23 15:29 (GMT+01:00) An: dovecot@dovecot.org Betreff: Backing up >> m(d)box - rsync? Hello,I manage a small number of email accounts for a >> voluntary organisation on a shared hosting platform.$ dovecot >> --version2.3.13 (89f716dc2)I would like to keep automated local backups, but >> do not have access to doveadm.I have seen a couple of forum posts where >> users have have suggested that using rsync to backup m(d)box folders can >> corrupt dovecot's indexes, but there is no further explanation, and this is >> apparently not a problem for maildir. Our host seems to use mdbox.Does >> doveadm provide some sort of transaction/locking mechanism to prevent >> consistency problems? Others seem to recommend using tar but I don't see >> what difference that should make.Given that cpanel backups (provided as >> tar.gz archives of the home directory) include mail/ and seem to be copies >> of the filesystem at a particular time (though not true "snapshots" as >> such), aren't these just as "safe" as an rsync-ed backup?Can anyone >> confirm/deny/shed any light on the issue(s), if indeed any?Many >> thanks,Gareth___dovecot mailing >> list -- dovecot@dovecot.orgTo unsubscribe send an email to >> dovecot-le...@dovecot.org >> ___ >> dovecot mailing list -- dovecot@dovecot.org >> To unsubscribe send an email to dovecot-le...@dovecot.org ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
Re: Backing up m(d)box - rsync?
https://github.com/tachtler/dovecot-backup On 16.08.23 16:45, Gareth Evans wrote: Thanks Sven but I get a 404 from that link. Gareth On 16 Aug 2023, at 15:21, sven_roellig via dovecot wrote: i use https://github.com/tachtler/dovecot-backupregards sven Ursprüngliche Nachricht Von: donots...@fastmail.fm Datum: 16.08.23 15:29 (GMT+01:00) An: dovecot@dovecot.org Betreff: Backing up m(d)box - rsync? Hello,I manage a small number of email accounts for a voluntary organisation on a shared hosting platform.$ dovecot --version2.3.13 (89f716dc2)I would like to keep automated local backups, but do not have access to doveadm.I have seen a couple of forum posts where users have have suggested that using rsync to backup m(d)box folders can corrupt dovecot's indexes, but there is no further explanation, and this is apparently not a problem for maildir. Our host seems to use mdbox.Does doveadm provide some sort of transaction/locking mechanism to prevent consistency problems? Others seem to recommend using tar but I don't see what difference that should make.Given that cpanel backups (provided as tar.gz archives of the home directory) include mail/ and seem to be copies of the filesystem at a particular time (though not true "snapshots" as such), aren't these just as "safe" as an rsync-ed backup?Can anyone confirm/deny/shed any light on the issue(s), if indeed any?Many thanks,Gareth___dovecot mailing list -- dovecot@dovecot.orgTo unsubscribe send an email to dovecot-le...@dovecot.org ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
Re: Backing up m(d)box - rsync?
Thanks Sven but I get a 404 from that link. Gareth > On 16 Aug 2023, at 15:21, sven_roellig via dovecot > wrote: > > i use https://github.com/tachtler/dovecot-backupregards sven > Ursprüngliche Nachricht Von: donots...@fastmail.fm Datum: > 16.08.23 15:29 (GMT+01:00) An: dovecot@dovecot.org Betreff: Backing up > m(d)box - rsync? Hello,I manage a small number of email accounts for a > voluntary organisation on a shared hosting platform.$ dovecot --version2.3.13 > (89f716dc2)I would like to keep automated local backups, but do not have > access to doveadm.I have seen a couple of forum posts where users have have > suggested that using rsync to backup m(d)box folders can corrupt dovecot's > indexes, but there is no further explanation, and this is apparently not a > problem for maildir. Our host seems to use mdbox.Does doveadm provide some > sort of transaction/locking mechanism to prevent consistency problems? > Others seem to recommend using tar but I don't see what difference that > should make.Given that cpanel backups (provided as tar.gz archives of the > home directory) include mail/ and seem to be copies of the filesystem at a > particular time (though not true "snapshots" as such), aren't these just as > "safe" as an rsync-ed backup?Can anyone confirm/deny/shed any light on the > issue(s), if indeed any?Many > thanks,Gareth___dovecot mailing > list -- dovecot@dovecot.orgTo unsubscribe send an email to > dovecot-le...@dovecot.org > ___ > dovecot mailing list -- dovecot@dovecot.org > To unsubscribe send an email to dovecot-le...@dovecot.org ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
RE: Backing up m(d)box - rsync?
i use https://github.com/tachtler/dovecot-backupregards sven Ursprüngliche Nachricht Von: donots...@fastmail.fm Datum: 16.08.23 15:29 (GMT+01:00) An: dovecot@dovecot.org Betreff: Backing up m(d)box - rsync? Hello,I manage a small number of email accounts for a voluntary organisation on a shared hosting platform.$ dovecot --version2.3.13 (89f716dc2)I would like to keep automated local backups, but do not have access to doveadm.I have seen a couple of forum posts where users have have suggested that using rsync to backup m(d)box folders can corrupt dovecot's indexes, but there is no further explanation, and this is apparently not a problem for maildir. Our host seems to use mdbox.Does doveadm provide some sort of transaction/locking mechanism to prevent consistency problems? Others seem to recommend using tar but I don't see what difference that should make.Given that cpanel backups (provided as tar.gz archives of the home directory) include mail/ and seem to be copies of the filesystem at a particular time (though not true "snapshots" as such), aren't these just as "safe" as an rsync-ed backup?Can anyone confirm/deny/shed any light on the issue(s), if indeed any?Many thanks,Gareth___dovecot mailing list -- dovecot@dovecot.orgTo unsubscribe send an email to dovecot-le...@dovecot.org ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
Backing up m(d)box - rsync?
Hello, I manage a small number of email accounts for a voluntary organisation on a shared hosting platform. $ dovecot --version 2.3.13 (89f716dc2) I would like to keep automated local backups, but do not have access to doveadm. I have seen a couple of forum posts where users have have suggested that using rsync to backup m(d)box folders can corrupt dovecot's indexes, but there is no further explanation, and this is apparently not a problem for maildir. Our host seems to use mdbox. Does doveadm provide some sort of transaction/locking mechanism to prevent consistency problems? Others seem to recommend using tar but I don't see what difference that should make. Given that cpanel backups (provided as tar.gz archives of the home directory) include mail/ and seem to be copies of the filesystem at a particular time (though not true "snapshots" as such), aren't these just as "safe" as an rsync-ed backup? Can anyone confirm/deny/shed any light on the issue(s), if indeed any? Many thanks, Gareth ___ dovecot mailing list -- dovecot@dovecot.org To unsubscribe send an email to dovecot-le...@dovecot.org
