# /usr/local/dovecot/bin/dsync -c /usr/local/dovecot/etc/dovecot/dovecot.conf -D -o imapc_user=test@example.com -o imapc_password=pwd backup -R -u test@example.com imapc: doveadm(root): Debug: Loading modules from directory: /usr/local/dovecot/lib/dovecot doveadm(root): Debug: Module loaded: /usr/local/dovecot/lib/dovecot/lib10_quota_plugin.so doveadm(root): Debug: Loading modules from directory: /usr/local/dovecot/lib/dovecot/doveadm doveadm(root): Debug: Skipping module doveadm_acl_plugin, because dlopen() failed: /usr/local/dovecot/lib/dovecot/doveadm/lib10_doveadm_acl_plugin.so: undefined symbol: acl_user_module (this is usually intentional, so just ignore this message) doveadm(root): Debug: Skipping module doveadm_expire_plugin, because dlopen() failed: /usr/local/dovecot/lib/dovecot/doveadm/lib10_doveadm_expire_plugin.so: undefined symbol: expire_set_deinit (this is usually intentional, so just ignore this message) doveadm(root): Debug: Module loaded: /usr/local/dovecot/lib/dovecot/doveadm/lib10_doveadm_quota_plugin.so doveadm(root): Debug: Skipping module doveadm_fts_plugin, because dlopen() failed: /usr/local/dovecot/lib/dovecot/doveadm/lib20_doveadm_fts_plugin.so: undefined symbol: fts_backend_rescan (this is usually intentional, so just ignore this message) doveadm(test@example.com): Debug: Added userdb setting: mail=maildir:/data/vmail/e/example.com/t/test/Maildir/ doveadm(test@example.com): Debug: Added userdb setting: plugin/quota_rule=*:bytes=0 doveadm(test@example.com): Debug: Effective uid=8000, gid=8000, home=/data/vmail/m/mailtest.kufnet.at/m/mynet doveadm(test@example.com): Debug: Quota root: name=User quota backend=maildir args= doveadm(test@example.com): Debug: Quota rule: root=User quota mailbox=* bytes=0 messages=0 doveadm(test@example.com): Debug: Quota warning: bytes=0 (90%) messages=0 reverse=no command=quota-warning 90 test@example.com doveadm(test@example.com): Debug: Quota grace: root=User quota bytes=0 (10%) doveadm(test@example.com): Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=maildir:/data/vmail/e/example.com/t/test/Maildir/ doveadm(test@example.com): Debug: maildir++: root=/data/vmail/e/example.com/t/test/Maildir, index=, indexpvt=, control=, inbox=/data/vmail/e/example.com/t/test/Maildir, alt= doveadm(test@example.com): Debug: Namespace : Using permissions from /data/vmail/e/example.com/t/test/Maildir: mode=0700 gid=default dsync(test@example.com): Debug: Effective uid=8000, gid=8000, home=/data/vmail/m/mailtest.kufnet.at/m/mynet dsync(test@example.com): Debug: Quota root: name=User quota backend=maildir args= dsync(test@example.com): Debug: Quota rule: root=User quota mailbox=* bytes=0 messages=0 dsync(test@example.com): Debug: Quota warning: bytes=0 (90%) messages=0 reverse=no command=quota-warning 90 test@example.com dsync(test@example.com): Debug: Quota grace: root=User quota bytes=0 (10%) dsync(test@example.com): Debug: Namespace inbox: type=private, prefix=, sep=, inbox=yes, hidden=no, list=yes, subscriptions=yes location=imapc: dsync(test@example.com): Debug: imapc(external-imap.example.com:143): Looking up IP address dsync(test@example.com): Debug: imapc(external-imap.example.com:143): Connecting to external-imap.example.com:143 dsync(test@example.com): Debug: imapc(external-imap.example.com:143): Server capabilities: IMAP4rev1 UIDPLUS CHILDREN NAMESPACE THREAD=ORDEREDSUBJECT THREAD=REFERENCES SORT QUOTA IDLE STARTTLS dsync(test@example.com): Debug: imapc(external-imap.example.com:143): Authenticating as test@example.com dsync(test@example.com): Debug: imapc(external-imap.example.com:143): Authenticated successfully dsync(test@example.com): Debug: imapc: root=, index=, indexpvt=, control=, inbox=, alt= dsync(test@example.com): Panic: file quota-maildir.c: line 827: unreached dsync(test@example.com): Error: Raw backtrace: /usr/local/dovecot/lib/dovecot/libdovecot.so.0(+0x682a0) [0x7f514ec0e2a0] -> /usr/local/dovecot/lib/dovecot/libdovecot.so.0(default_fatal_handler+0x2a) [0x7f514ec0e30a] -> /usr/local/dovecot/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f514ebc8a5e] -> /usr/local/dovecot/lib/dovecot/lib10_quota_plugin.so(+0x9888) [0x7f514e3d4888] -> /usr/local/dovecot/lib/dovecot/lib10_quota_plugin.so(quota_add_user_namespace+0x143) [0x7f514e3d08f3] -> /usr/local/dovecot/lib/dovecot/lib10_quota_plugin.so(quota_mailbox_list_created+0x19a) [0x7f514e3d710a] -> /usr/local/dovecot/lib/dovecot/libdovecot-storage.so.0(hook_mailbox_list_created+0x61) [0x7f514eed0f51] -> /usr/local/dovecot/lib/dovecot/libdovecot-storage.so.0(mailbox_list_create+0x345) [0x7f514eed43c5] -> /usr/local/dovecot/lib/dovecot/libdovecot-storage.so.0(mail_storage_create_full+0x44d) [0x7f514eecd36d] -> /usr/local/dovecot/lib/dovecot/libdovecot-storage.so.0(mail_storage_create+0x1e) [0x7f514eecd62e] -> /usr/local/dovecot/lib/dovecot/libdovecot-storage.so.0(+0x4c8f8) [0x7f514eec78f8] -> /usr/local/dovecot/lib/dovecot/libdovecot-storage.so.0(mail_namespaces_init+0xef) [0x7f514eec859f] -> /usr/local/dovecot/lib/dovecot/libdovecot-storage.so.0(mail_storage_service_next+0x54d) [0x7f514eedac5d] -> /usr/local/dovecot/bin/dsync() [0x429501] -> /usr/local/dovecot/bin/dsync() [0x412123] -> /usr/local/dovecot/bin/dsync(doveadm_mail_try_run+0x257) [0x412dd7] -> /usr/local/dovecot/bin/dsync(main+0x3d8) [0x411d18] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf5) [0x7f514e801ec5] -> /usr/local/dovecot/bin/dsync() [0x411f2f] Aborted (core dumped)