Michael Smith (DF)
2014-Jan-29 18:03 UTC
[Dovecot] dsync backup; compressed to uncompressed
I need to backup some of the mailboxes on our system. We are currently using
mdbox with zlib compression plugin.
The backups need to be maildir without compression. How can I accomplish this
using dsync?
The following just causes each msg file in maildir to be compressed as well.
dsync -f -u user1 backup maildir:/var/tmp/user1
While this just causes the dsync to fail while spewing a bunch of errors because
it can no longer read the compressed mdbox files.
dsync -f -u user1 -o mail_plugins= backup maildir:/var/tmp/user1
# doveconf -n
# 2.2.4: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-279.19.1.el6.x86_64 x86_64 CentOS release 6.3 (Final)
auth_debug = yes
auth_debug_passwords = yes
auth_default_realm = domain1.net
auth_master_user_separator = *
auth_mechanisms = plain login
auth_verbose = yes
auth_verbose_passwords = plain
debug_log_path = /var/log/dovecot-debug.log
disable_plaintext_auth = no
dotlock_use_excl = no
lda_mailbox_autocreate = yes
lock_method = dotlock
mail_access_groups = mail
mail_debug = yes
mail_fsync = always
mail_location = mdbox:~/mail:INDEX=~/index
mail_plugins = quota zlib
mail_privileged_group = mail
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character
vacation subaddress comparator-i;ascii-numeric relational regex imap4flags
copy include variables body enotify environment mailbox date
mbox_read_locks = dotlock
mbox_write_locks = dotlock
mdbox_rotate_interval = 1 weeks
mdbox_rotate_size = 20 M
mmap_disable = yes
namespace {
inbox = yes
location mailbox Drafts {
auto = subscribe
special_use = \Drafts
}
mailbox Junk {
auto = subscribe
special_use = \Junk
}
mailbox Sent {
auto = subscribe
special_use = \Sent
}
mailbox Trash {
auto = subscribe
special_use = \Trash
}
prefix separator = /
type = private
}
passdb {
args = /etc/dovecot/dovecot-sql-master.conf.ext
driver = sql
master = yes
pass = yes
}
passdb {
args = /etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
plugin {
autosubscribe = Trash
autosubscribe2 = Junk
autosubscribe3 = Drafts
autosubscribe4 = Sent
autosubscribe5 = INBOX
mail_max_userip_connections = 10
managesieve_max_line_length = 65536
quota = dict:User quota::file:%h/dovecot.quota
quota2_rule = Trash:storage=+10%%
quota3_rule = Junk:storage=+20%%
quota_rule = *:storage=100M:messages=100000
recipient_delimiter = +
sieve_before = /var/opt/mail/global.sieve/
zlib_save = gz
zlib_save_level = 9
}
pop3_reuse_xuidl = yes
protocols = imap pop3 sieve lmtp
service auth {
inet_listener auth {
port = 113
}
unix_listener auth-userdb {
user = nobody
}
}
service lmtp {
inet_listener lmtp {
port = 24
}
process_min_avail = 10
service_count = 1
}
service managesieve-login {
inet_listener sieve {
port = 4190
}
process_min_avail = 0
service_count = 1
vsz_limit = 64 M
}
ssl = no
ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
ssl_key = </etc/pki/dovecot/private/dovecot.pem
userdb {
args = /etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
protocol lda {
mail_plugins = quota zlib sieve
}
protocol imap {
mail_plugins = quota zlib imap_quota
}
protocol sieve {
mail_max_userip_connections = 10
mail_plugins = quota zlib
managesieve_max_line_length = 65536
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character
vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy
include variables body enotify environment mailbox date
}
protocol lmtp {
mail_plugins = quota zlib sieve
}
Michael Smith (DF)
2014-Jan-29 20:30 UTC
[Dovecot] dsync backup; compressed to uncompressed
Ok, I think I found an answer. I don't know if it's the right one...
I duplicated my dovecot.conf to backup.conf. I then removed this part from
plugin {}
zlib_save = gz
zlib_save_level = 9
I then add "-c backup.conf" to my dsync command. This appears to
allow dsync to read the compressed mdbox accounts, but when it writes the backup
in maildir format, everything is uncompressed.
-----Original Message-----
From: dovecot-bounces at dovecot.org [mailto:dovecot-bounces at dovecot.org] On
Behalf Of Michael Smith (DF)
Sent: Wednesday, January 29, 2014 12:04 PM
To: 'dovecot at dovecot.org'
Subject: [Dovecot] dsync backup; compressed to uncompressed
I need to backup some of the mailboxes on our system. We are currently using
mdbox with zlib compression plugin.
The backups need to be maildir without compression. How can I accomplish this
using dsync?
The following just causes each msg file in maildir to be compressed as well.
dsync -f -u user1 backup maildir:/var/tmp/user1
While this just causes the dsync to fail while spewing a bunch of errors because
it can no longer read the compressed mdbox files.
dsync -f -u user1 -o mail_plugins= backup maildir:/var/tmp/user1
# doveconf -n
# 2.2.4: /etc/dovecot/dovecot.conf
# OS: Linux 2.6.32-279.19.1.el6.x86_64 x86_64 CentOS release 6.3 (Final)
auth_debug = yes
auth_debug_passwords = yes
auth_default_realm = domain1.net
auth_master_user_separator = *
auth_mechanisms = plain login
auth_verbose = yes
auth_verbose_passwords = plain
debug_log_path = /var/log/dovecot-debug.log
disable_plaintext_auth = no
dotlock_use_excl = no
lda_mailbox_autocreate = yes
lock_method = dotlock
mail_access_groups = mail
mail_debug = yes
mail_fsync = always
mail_location = mdbox:~/mail:INDEX=~/index
mail_plugins = quota zlib
mail_privileged_group = mail
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character
vacation subaddress comparator-i;ascii-numeric relational regex imap4flags
copy include variables body enotify environment mailbox date
mbox_read_locks = dotlock
mbox_write_locks = dotlock
mdbox_rotate_interval = 1 weeks
mdbox_rotate_size = 20 M
mmap_disable = yes
namespace {
inbox = yes
location mailbox Drafts {
auto = subscribe
special_use = \Drafts
}
mailbox Junk {
auto = subscribe
special_use = \Junk
}
mailbox Sent {
auto = subscribe
special_use = \Sent
}
mailbox Trash {
auto = subscribe
special_use = \Trash
}
prefix separator = /
type = private
}
passdb {
args = /etc/dovecot/dovecot-sql-master.conf.ext
driver = sql
master = yes
pass = yes
}
passdb {
args = /etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
plugin {
autosubscribe = Trash
autosubscribe2 = Junk
autosubscribe3 = Drafts
autosubscribe4 = Sent
autosubscribe5 = INBOX
mail_max_userip_connections = 10
managesieve_max_line_length = 65536
quota = dict:User quota::file:%h/dovecot.quota
quota2_rule = Trash:storage=+10%%
quota3_rule = Junk:storage=+20%%
quota_rule = *:storage=100M:messages=100000
recipient_delimiter = +
sieve_before = /var/opt/mail/global.sieve/
zlib_save = gz
zlib_save_level = 9
}
pop3_reuse_xuidl = yes
protocols = imap pop3 sieve lmtp
service auth {
inet_listener auth {
port = 113
}
unix_listener auth-userdb {
user = nobody
}
}
service lmtp {
inet_listener lmtp {
port = 24
}
process_min_avail = 10
service_count = 1
}
service managesieve-login {
inet_listener sieve {
port = 4190
}
process_min_avail = 0
service_count = 1
vsz_limit = 64 M
}
ssl = no
ssl_cert = </etc/pki/dovecot/certs/dovecot.pem
ssl_key = </etc/pki/dovecot/private/dovecot.pem
userdb {
args = /etc/dovecot/dovecot-sql.conf.ext
driver = sql
}
protocol lda {
mail_plugins = quota zlib sieve
}
protocol imap {
mail_plugins = quota zlib imap_quota
}
protocol sieve {
mail_max_userip_connections = 10
mail_plugins = quota zlib
managesieve_max_line_length = 65536
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope encoded-character
vacation subaddress comparator-i;ascii-numeric relational regex imap4flags copy
include variables body enotify environment mailbox date
}
protocol lmtp {
mail_plugins = quota zlib sieve
}