thr3ads.net - dovecot - MDBOX DSYNC error: Broken physical size in mailbox [Aug 2020]

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paul-dovecotlist at trainor.nz

2020-Aug-17 00:09 UTC

MDBOX DSYNC error: Broken physical size in mailbox

Hi All,

I currently have a small Dovecot server (Server A) and I've installed a 
second dovecot mailbox server (server B) and am trying to sync mailboxes 
from Server A to Server B.

Both servers sit behind two dovecot directors on separate hosts and have 
identical config files (doveconf -n output below). Mailboxes on Server A 
are on an NFS mount.

Server A has been working fine with no issues for a couple of years.

I'm running this command on Server A:
doveadm sync -u #user# tcp:#newservername#:24245

Small mailboxes with few items are syncing OK.. but most mailboxes fail 
(sycn stops) with the following type of error: (Mailbox name, storage 
file, UID and sizes vary).

dsync-local(#username#)<b2vTDKerOV/fAQAAZMK/0g>: Error: Mailbox INBOX: 
Cache 
/#usershomedirectory#/mdbox/mailboxes/INBOX/dbox-Mails/dovecot.index.cache: 
Deleting corrupted cache record uid=9: UID 9: Broken physical size in 
mailbox INBOX: read(/#usershomedirectory#/mdbox/storage/m.1) failed: 
Cached message size larger than expected (60616 > 8688, box=INBOX, UID=9)

If I run it again, I'll get the same error, but with a new UID.

If I do a local migration instead of server to server, I still get the 
errors.
e.g. doveadm sync -u #user# maildir:~/Maildir-test/

I tried running a force resync (doveadm force-resync -u #user# -f "*) 
but it didn't help.

There's no issues from an imap client accessing any emails. Using 
imapsync to sync affected mailboxes works fine for example. But... if I 
then run a dsync on Server B (doveadm sync -u #user# 
maildir:~/Maildir-test/) on an account that was successfully migrated 
with imapsync, I get the issue again.

How worried should I be about these corrupted cache records, and any 
ideas how to resolve?

Thanks in advance for your help!

Paul.

--- output of doveconf -n ---

# 2.3.11.3 (502c39af9): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.5.11 (6c69c917)
# OS: Linux 5.3.0-1032-aws x86_64 Ubuntu 18.04.5 LTS
hostname = ###
lda_mailbox_autocreate = yes
lda_mailbox_autosubscribe = yes
login_trusted_networks = ###
mail_fsync = always
mail_location = mdbox:~/mdbox
mail_plugins = " acl notify replication"
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 index ihave duplicate mime foreverypart extracttext
mmap_disable = yes
namespace inbox {
 ? inbox = yes
 ? location  ? mailbox Drafts {
 ??? special_use = \Drafts
 ? }
 ? mailbox Junk {
 ??? special_use = \Junk
 ? }
 ? mailbox Sent {
 ??? special_use = \Sent
 ? }
 ? mailbox "Sent Messages" {
 ??? special_use = \Sent
 ? }
 ? mailbox Trash {
 ??? special_use = \Trash
 ? }
 ? prefix  ? separator = /
 ? type = private
}
namespace shared {
 ? list = children
 ? location = 
mdbox:/mailhomes/%%d/%%n/mdbox:INDEXPVT=/mailhomes/%d/%n/shared
 ? prefix = shared/%%u/
 ? separator = /
 ? subscriptions = no
 ? type = shared
}
passdb {
 ? args = /etc/dovecot/dovecot-ldap.conf.ext
 ? driver = ldap
}
plugin {
 ? acl = vfile:/tmp/global-acls:cache_secs=5
 ? mail_plugins = " acl notify replication"
 ? sieve = file:~/sieve;active=~/.dovecot.sieve
 ? sieve_before = /mailhomes/sieve/global/SpamToJunk.sieve
 ? sieve_max_actions = 32
 ? sieve_max_redirects = 4
 ? sieve_max_script_size = 1M
 ? sieve_quota_max_scripts = 20
 ? sieve_quota_max_storage = 10M
 ? sieve_redirect_envelope_from = sender
 ? zlib_save = bz2
 ? zlib_save_level = 6
}
protocols = " imap lmtp sieve submission sieve"
recipient_delimiter = -
service doveadm {
 ? inet_listener {
 ??? port = 24245
 ? }
}
service imap-login {
 ? process_min_avail = 2
}
service imap {
 ? process_limit = 4096
}
service lmtp {
 ? inet_listener lmtp {
 ??? port = 24
 ? }
}
service managesieve-login {
 ? inet_listener sieve {
 ??? port = 4190
 ? }
 ? process_min_avail = 2
 ? service_count = 1
}
service managesieve {
 ? process_limit = 1024
}
service submission-login {
 ? inet_listener submission {
 ??? port = 587
 ? }
}
ssl = required
ssl_cert = </etc/dovecot/dovecot-backend.pem
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
submission_client_workarounds = whitespace-before-path
submission_host = ###
submission_relay_host = ###
submission_relay_ssl = starttls
submission_relay_trusted = yes
userdb {
 ? driver = prefetch
}
userdb {
 ? args = /etc/dovecot/dovecot-ldap-userdb.conf.ext
 ? driver = ldap
}
protocol lda {
 ? mail_plugins = " acl notify replication zlib"
}
protocol imap {
 ? mail_max_userip_connections = 100
 ? mail_plugins = " acl notify replication zlib imap_acl"
}
protocol lmtp {
 ? mail_plugins = " acl notify replication zlib sieve"
}
protocol sieve {
 ? mail_max_userip_connections = 10
 ? managesieve_implementation_string = Dovecot Pigeonhole
 ? managesieve_logout_format = bytes=%i/%o
 ? managesieve_max_compile_errors = 5
 ? managesieve_max_line_length = 64 k
}
protocol submission {
 ? mail_plugins = " acl notify replication"
}
local ### {
 ? doveadm_password = # hidden, use -P to show it
}
local ### {
 ? doveadm_password = # hidden, use -P to show it
}

Paul Trainor

2020-Aug-17 21:29 UTC

head link

MDBOX DSYNC error: Broken physical size in mailbox

Further to below.

I'm getting these errors in the logs:

  failed: read(/#userdir#/mdbox/storage/m.19) failed: 
zlib.read(/#userdir#/mdbox/storage/m.19): gz trailer has wrong CRC value 
at 10376033 (FETCH BODY[])

I'm not sure if it's relevant, but I've set bz2 as the compression 
method and not gzip...

Has anyone any ideas?

Thanks!
Paul.


On 2020-08-17 12:09, paul-dovecotlist at trainor.nz
wrote:> Hi All,
> 
> I currently have a small Dovecot server (Server A) and I've installed
> a second dovecot mailbox server (server B) and am trying to sync
> mailboxes from Server A to Server B.
> 
> Both servers sit behind two dovecot directors on separate hosts and
> have identical config files (doveconf -n output below). Mailboxes on
> Server A are on an NFS mount.
> 
> Server A has been working fine with no issues for a couple of years.
> 
> I'm running this command on Server A:
> doveadm sync -u #user# tcp:#newservername#:24245
> 
> Small mailboxes with few items are syncing OK.. but most mailboxes
> fail (sycn stops) with the following type of error: (Mailbox name,
> storage file, UID and sizes vary).
> 
> dsync-local(#username#)<b2vTDKerOV/fAQAAZMK/0g>: Error: Mailbox
INBOX:
> Cache
> /#usershomedirectory#/mdbox/mailboxes/INBOX/dbox-Mails/dovecot.index.cache:
> Deleting corrupted cache record uid=9: UID 9: Broken physical size in
> mailbox INBOX: read(/#usershomedirectory#/mdbox/storage/m.1) failed:
> Cached message size larger than expected (60616 > 8688, box=INBOX,
> UID=9)
> 
> If I run it again, I'll get the same error, but with a new UID.
> 
> If I do a local migration instead of server to server, I still get the 
> errors.
> e.g. doveadm sync -u #user# maildir:~/Maildir-test/
> 
> I tried running a force resync (doveadm force-resync -u #user# -f "*)
> but it didn't help.
> 
> There's no issues from an imap client accessing any emails. Using
> imapsync to sync affected mailboxes works fine for example. But... if
> I then run a dsync on Server B (doveadm sync -u #user#
> maildir:~/Maildir-test/) on an account that was successfully migrated
> with imapsync, I get the issue again.
> 
> How worried should I be about these corrupted cache records, and any
> ideas how to resolve?
> 
> Thanks in advance for your help!
> 
> Paul.
> 
> --- output of doveconf -n ---
> 
> # 2.3.11.3 (502c39af9): /etc/dovecot/dovecot.conf
> # Pigeonhole version 0.5.11 (6c69c917)
> # OS: Linux 5.3.0-1032-aws x86_64 Ubuntu 18.04.5 LTS
> hostname = ###
> lda_mailbox_autocreate = yes
> lda_mailbox_autosubscribe = yes
> login_trusted_networks = ###
> mail_fsync = always
> mail_location = mdbox:~/mdbox
> mail_plugins = " acl notify replication"
> 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 index ihave duplicate mime foreverypart
> extracttext
> mmap_disable = yes
> namespace inbox {
> ? inbox = yes
> ? location > ? mailbox Drafts {
> ??? special_use = \Drafts
> ? }
> ? mailbox Junk {
> ??? special_use = \Junk
> ? }
> ? mailbox Sent {
> ??? special_use = \Sent
> ? }
> ? mailbox "Sent Messages" {
> ??? special_use = \Sent
> ? }
> ? mailbox Trash {
> ??? special_use = \Trash
> ? }
> ? prefix > ? separator = /
> ? type = private
> }
> namespace shared {
> ? list = children
> ? location = 
> mdbox:/mailhomes/%%d/%%n/mdbox:INDEXPVT=/mailhomes/%d/%n/shared
> ? prefix = shared/%%u/
> ? separator = /
> ? subscriptions = no
> ? type = shared
> }
> passdb {
> ? args = /etc/dovecot/dovecot-ldap.conf.ext
> ? driver = ldap
> }
> plugin {
> ? acl = vfile:/tmp/global-acls:cache_secs=5
> ? mail_plugins = " acl notify replication"
> ? sieve = file:~/sieve;active=~/.dovecot.sieve
> ? sieve_before = /mailhomes/sieve/global/SpamToJunk.sieve
> ? sieve_max_actions = 32
> ? sieve_max_redirects = 4
> ? sieve_max_script_size = 1M
> ? sieve_quota_max_scripts = 20
> ? sieve_quota_max_storage = 10M
> ? sieve_redirect_envelope_from = sender
> ? zlib_save = bz2
> ? zlib_save_level = 6
> }
> protocols = " imap lmtp sieve submission sieve"
> recipient_delimiter = -
> service doveadm {
> ? inet_listener {
> ??? port = 24245
> ? }
> }
> service imap-login {
> ? process_min_avail = 2
> }
> service imap {
> ? process_limit = 4096
> }
> service lmtp {
> ? inet_listener lmtp {
> ??? port = 24
> ? }
> }
> service managesieve-login {
> ? inet_listener sieve {
> ??? port = 4190
> ? }
> ? process_min_avail = 2
> ? service_count = 1
> }
> service managesieve {
> ? process_limit = 1024
> }
> service submission-login {
> ? inet_listener submission {
> ??? port = 587
> ? }
> }
> ssl = required
> ssl_cert = </etc/dovecot/dovecot-backend.pem
> ssl_dh = # hidden, use -P to show it
> ssl_key = # hidden, use -P to show it
> submission_client_workarounds = whitespace-before-path
> submission_host = ###
> submission_relay_host = ###
> submission_relay_ssl = starttls
> submission_relay_trusted = yes
> userdb {
> ? driver = prefetch
> }
> userdb {
> ? args = /etc/dovecot/dovecot-ldap-userdb.conf.ext
> ? driver = ldap
> }
> protocol lda {
> ? mail_plugins = " acl notify replication zlib"
> }
> protocol imap {
> ? mail_max_userip_connections = 100
> ? mail_plugins = " acl notify replication zlib imap_acl"
> }
> protocol lmtp {
> ? mail_plugins = " acl notify replication zlib sieve"
> }
> protocol sieve {
> ? mail_max_userip_connections = 10
> ? managesieve_implementation_string = Dovecot Pigeonhole
> ? managesieve_logout_format = bytes=%i/%o
> ? managesieve_max_compile_errors = 5
> ? managesieve_max_line_length = 64 k
> }
> protocol submission {
> ? mail_plugins = " acl notify replication"
> }
> local ### {
> ? doveadm_password = # hidden, use -P to show it
> }
> local ### {
> ? doveadm_password = # hidden, use -P to show it
> }

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