On 15 November 2018 at 20:07 KES kes-kes@yandex.ru wrote:

Hi.

I mount ~/Maildir/new via s3fs

s3fs mybucket /home/kes/Maildir/new -f -o use_cache=/tmp/S3 -o noatime -o endpoint=eu-west-1 -o profile=mail -o allow_other -o uid=1000,gid=1000

I configure dovecot:

maildir_copy_with_hardlinks = no

Nov 15 19:30:48 work dovecot: imap(kes): Error: rename(/home/kes/Maildir/new/ddd3, /home/kes/Maildir/cur/ddd3:2,) failed: Invalid cross-device link

Tell me please, why I still get this error and how to fix it?

As replied over IRC as well, 'new', 'cur' and 'tmp' must reside on same filesystem. Different folders can be on separate filesystems.

Aki