Re: [Dovecot] dovecot OCFS2 Cluster
On 16/05/2011 13:46, Timo Sirainen wrote: On Mon, 2011-05-16 at 14:08 +0200, Osvaldo Alvarez Pozo wrote: But if I erase mail from Mozilla Thunderbird then I find no mail with ref count=0 and doveadm purge does nothing. doveadm purge only purges mails that have been expunged. So I guess your TB has only marked mails \Deleted, but not actually expunged anything. Yes, Thunderbird's default is to only mark as deleted (true of many clients I think?). There are some options to encourage it to expunge more frequently. Also (and you need EVERY user to change this..) you can set your delete action to (say) move the mails to a Trash folder. I think this (mark, then expunge) behaviour is very alien to most email users, it's just not how any other MUA actually behaves (at best they all hide the imap behaviour). There are some features in dovecot to help hide this, but I think it would actually be quite helpful to have a Dovecot feature which literally intercepts an MUA marking messages deleted and whips them into the Trash folder..? Anyway, just a wierdness in IMAP which I think really hasn't worked out as the model of how the rest of the world decided to work. I personally desire this behaviour to go away since it's confusing to 99% of non technical users... Cheers Ed W
Re: [Dovecot] dovecot OCFS2 Cluster
Hi I have done some test. If I use a webmail as roundcube to read mail mails, when I erase a mail from Inbox and after that from trash.the command. /usr/local/dovecot/bin/doveadm dump /var/vmail1/example.org/user/mdbox/storage/|grep 'ref.*\b0\b' show mail with ref count=0 - ext 3 ref : 0 () - ext 3 ref : 0 () - ext 3 ref : 0 () - ext 3 ref : 0 () - ext 3 ref : 0 () - ext 3 ref : 0 () - ext 3 ref : 0 () - ext 3 ref : 0 () - ext 3 ref : 0 () - ext 3 ref : 0 () - ext 3 ref : 0 () - ext 3 ref : 0 () - ext 3 ref : 0 () But if I erase mail from Mozilla Thunderbird then I find no mail with ref count=0 and doveadm purge does nothing. It is strange I thought thunderbird was a good mail client. My thunderbird is up to date. Thanks 2011/5/16 Pascal Volk user+dove...@localhost.localdomain.org: On 05/16/2011 12:37 AM Osvaldo Alvarez Pozo wrote: Hi thanks but I do not have doveadm-purge. I have doveadm and I can run it with -purge option and that's wath I did with no result. Please stop Top-posting. OK, if man 1 doveadm-purge didn't work for you, run doveadm purge help. You may check if there are some deleted mails in the mdbox: doveadm dump /path/2/mdbox/storage | egrep 'ext 3 ref\s+\:\s+0' -c If the printed count is greater then 0, there are deleted mails in the mdbox. Then you can delete them permanently with doveadm purge … Regards, Pascal -- The trapper recommends today: fabaceae.1113...@localdomain.org
Re: [Dovecot] dovecot OCFS2 Cluster
On Mon, 2011-05-16 at 14:08 +0200, Osvaldo Alvarez Pozo wrote: But if I erase mail from Mozilla Thunderbird then I find no mail with ref count=0 and doveadm purge does nothing. doveadm purge only purges mails that have been expunged. So I guess your TB has only marked mails \Deleted, but not actually expunged anything.
Re: [Dovecot] dovecot OCFS2 Cluster
Yeah, looks right. And once you've migrated everyone, change
mail_location globally and remove them from userdb.
On Fri, 2011-05-13 at 08:46 +0200, Osvaldo Alvarez Pozo wrote:
Ok I want to do migration without downtime
Yes i have red that the separator depends on mailbox format and that
for maildir it is '.'
So in my dovecot.conf I have no namespace definition and my mail-location is:
mail_location = maildir:/var/vmail/%d/%u/Maildir
But when I execute the dsync command:
/usr/local/dovecot/bin/dsync -v -f -u exam...@example.org mirror
mdbox:/var1/vmail/example.org/example/mdbox
i get
dsync(root): Fatal: Mail locations must use the same virtual mailbox
hierarchy separator (specify separator for the default namespace)
So i have to add to my dovecot.conf
namespace {
inbox = yes
separator = .
subscriptions = yes
}
And after finishig dsync for all mailboxes to a new location
I change separator to:
separator = /
as a final step I have to return the new mdbox mail location for
each user using userdb
and my dsync command would change:
/usr/local/dovecot/bin/dsync -v -f -u exam...@example.org mirror
maildir:/var/vmail/example.org/example/Maildir
Am I rigth?
Thanks you all
2011/5/13 Timo Sirainen t...@iki.fi:
On 13.5.2011, at 1.00, Osvaldo Alvarez Pozo wrote:
Actually I have no namespace definition. If i add namespace definition
for start migrating, waht about my clients? will they be able to find
there mail mailboxes while I am migrating from maildir to mdbox?
Your clients see the default namespace if it's not explicitly specified.
That namespace has prefix= and the separator depends on what mailbox
format you're using. With Maildir that would be . character. If you keep
that there shouldn't be even any potential problems.
Re: [Dovecot] dovecot OCFS2 Cluster
Hi I am testing mdbox. I noticed that after deleting mail from inbox and trash the mail are always in the mdbox I mean it size has not changed. I executed: /usr/local/dovecot/bin/doveadm -Dv purge -u u...@example.org but nothing changed the filess size have not changed I did /usr/local/dovecot/bin/doveadm search all -u u...@example.org 4673461242fdcb4d8d094ccdb073 1 4673461242fdcb4d8d094ccdb073 2 4673461242fdcb4d8d094ccdb073 3 4673461242fdcb4d8d094ccdb073 4 4673461242fdcb4d8d094ccdb073 5 52dfc91bb54cd04df30b4ccdb073 1 52dfc91bb54cd04df30b4ccdb073 2 52dfc91bb54cd04df30b4ccdb073 3 52dfc91bb54cd04df30b4ccdb073 4 52dfc91bb54cd04df30b4ccdb073 5 52dfc91bb54cd04df30b4ccdb073 6 52dfc91bb54cd04df30b4ccdb073 7 52dfc91bb54cd04df30b4ccdb073 8 52dfc91bb54cd04df30b4ccdb073 9 52dfc91bb54cd04df30b4ccdb073 10 52dfc91bb54cd04df30b4ccdb073 11 52dfc91bb54cd04df30b4ccdb073 12 52dfc91bb54cd04df30b4ccdb073 13 So all files are there rigth? How can I erase deleted mails? Thanks 2011/5/13 Timo Sirainen t...@iki.fi: On 13.5.2011, at 1.00, Osvaldo Alvarez Pozo wrote: Actually I have no namespace definition. If i add namespace definition for start migrating, waht about my clients? will they be able to find there mail mailboxes while I am migrating from maildir to mdbox? Your clients see the default namespace if it's not explicitly specified. That namespace has prefix= and the separator depends on what mailbox format you're using. With Maildir that would be . character. If you keep that there shouldn't be even any potential problems.
Re: [Dovecot] dovecot OCFS2 Cluster
On 05/16/2011 12:29 AM Osvaldo Alvarez Pozo wrote: Hi I am testing mdbox. … How can I erase deleted mails? See doveadm-purge(1) Regards, Pascal -- The trapper recommends today: fabaceae.1113...@localdomain.org
Re: [Dovecot] dovecot OCFS2 Cluster
Hi thanks but I do not have doveadm-purge. I have doveadm and I can run it with -purge option and that's wath I did with no result. Thanks 2011/5/16 Pascal Volk user+dove...@localhost.localdomain.org: On 05/16/2011 12:29 AM Osvaldo Alvarez Pozo wrote: Hi I am testing mdbox. … How can I erase deleted mails? See doveadm-purge(1) Regards, Pascal -- The trapper recommends today: fabaceae.1113...@localdomain.org
Re: [Dovecot] dovecot OCFS2 Cluster
On 05/16/2011 12:37 AM Osvaldo Alvarez Pozo wrote: Hi thanks but I do not have doveadm-purge. I have doveadm and I can run it with -purge option and that's wath I did with no result. Please stop Top-posting. OK, if man 1 doveadm-purge didn't work for you, run doveadm purge help. You may check if there are some deleted mails in the mdbox: doveadm dump /path/2/mdbox/storage | egrep 'ext 3 ref\s+\:\s+0' -c If the printed count is greater then 0, there are deleted mails in the mdbox. Then you can delete them permanently with doveadm purge … Regards, Pascal -- The trapper recommends today: fabaceae.1113...@localdomain.org
Re: [Dovecot] dovecot OCFS2 Cluster
Ok I want to do migration without downtime
Yes i have red that the separator depends on mailbox format and that
for maildir it is '.'
So in my dovecot.conf I have no namespace definition and my mail-location is:
mail_location = maildir:/var/vmail/%d/%u/Maildir
But when I execute the dsync command:
/usr/local/dovecot/bin/dsync -v -f -u exam...@example.org mirror
mdbox:/var1/vmail/example.org/example/mdbox
i get
dsync(root): Fatal: Mail locations must use the same virtual mailbox
hierarchy separator (specify separator for the default namespace)
So i have to add to my dovecot.conf
namespace {
inbox = yes
separator = .
subscriptions = yes
}
And after finishig dsync for all mailboxes to a new location
I change separator to:
separator = /
as a final step I have to return the new mdbox mail location for
each user using userdb
and my dsync command would change:
/usr/local/dovecot/bin/dsync -v -f -u exam...@example.org mirror
maildir:/var/vmail/example.org/example/Maildir
Am I rigth?
Thanks you all
2011/5/13 Timo Sirainen t...@iki.fi:
On 13.5.2011, at 1.00, Osvaldo Alvarez Pozo wrote:
Actually I have no namespace definition. If i add namespace definition
for start migrating, waht about my clients? will they be able to find
there mail mailboxes while I am migrating from maildir to mdbox?
Your clients see the default namespace if it's not explicitly specified. That
namespace has prefix= and the separator depends on what mailbox format
you're using. With Maildir that would be . character. If you keep that
there shouldn't be even any potential problems.
Re: [Dovecot] dovecot OCFS2 Cluster
Am 13.05.2011 08:46, schrieb Osvaldo Alvarez Pozo:
Ok I want to do migration without downtime
Yes i have red that the separator depends on mailbox format and that
for maildir it is '.'
So in my dovecot.conf I have no namespace definition and my mail-location is:
mail_location = maildir:/var/vmail/%d/%u/Maildir
But when I execute the dsync command:
/usr/local/dovecot/bin/dsync -v -f -u exam...@example.org mirror
mdbox:/var1/vmail/example.org/example/mdbox
i get
dsync(root): Fatal: Mail locations must use the same virtual mailbox
hierarchy separator (specify separator for the default namespace)
So i have to add to my dovecot.conf
namespace {
inbox = yes
separator = .
subscriptions = yes
}
And after finishig dsync for all mailboxes to a new location
I change separator to:
separator = /
as a final step I have to return the new mdbox mail location for
each user using userdb
and my dsync command would change:
/usr/local/dovecot/bin/dsync -v -f -u exam...@example.org mirror
maildir:/var/vmail/example.org/example/Maildir
Am I rigth?
Thanks you all
that doesnt look bad, but i am not sure
wait for others comments ( like Timo )
2011/5/13 Timo Sirainen t...@iki.fi:
On 13.5.2011, at 1.00, Osvaldo Alvarez Pozo wrote:
Actually I have no namespace definition. If i add namespace definition
for start migrating, waht about my clients? will they be able to find
there mail mailboxes while I am migrating from maildir to mdbox?
Your clients see the default namespace if it's not explicitly specified.
That namespace has prefix= and the separator depends on what mailbox
format you're using. With Maildir that would be . character. If you keep
that there shouldn't be even any potential problems.
however , i am thinking about migrate to mdbox too, on ocfs2, looks like
the store is getting slow with thousends of maildirs, there may other
reason for that too, depending hardware ( raid etc ), but current i only
see the migrate option to speed up, so i am interested in the results of
your migration ,please report
--
Best Regards
MfG Robert Schetterer
Germany/Munich/Bavaria
Re: [Dovecot] dovecot OCFS2 Cluster
Hi all
I migrated from dovecot 1.2 to dovecot 2.0
Next step migrate from maildir to mdbox
I have being reading about migrating to mdbox as Timo pointed me out.
But I have douths with namespace. I tried to use dsync and I got a
error:
dsync(root): Fatal: Mail locations must use the same virtual mailbox
hierarchy separator (specify separator for the default namespace)
I think It could be solved adding:
namespace {
inbox = yes
separator = /
subscriptions = yes
}
Actually I have no namespace definition. If i add namespace definition
for start migrating, waht about my clients? will they be able to find
there mail mailboxes while I am migrating from maildir to mdbox?
Thanks.
2011/5/9 Timo Sirainen t...@iki.fi:
On Mon, 2011-04-25 at 19:02 +0200, Osvaldo Alvarez Pozo wrote:
hi all
We have an ocfs2 cluster compose of 4 Debian lenny serveurs wich have
access to an ISCSI LUN we have create a partition on this Lun and
formated this partition as OCFS2.
2 serveurs does mail delivery (SMTP) and the two other are pop/imap
servers. The smtp servers use dovecot LDA to deliver to mailboxes. La
version de dovecot is 1.2.13, ldirectord balance conexion to the
servers(pop/pops/imap/imaps to the two imap/pop serveurs) (smtp to the
two smtp servers).
With v2.0 I'd suggest using http://wiki2.dovecot.org/Director
mail_location = maildir:/var/vmail/%d/%u/Maildir
Cluster filesystems don't seem to like Maildir much. With v2.0 you could
use mdbox.
We are having severals problems from cpu stuck for 61 seconds to
too many connexion.
I don't know what either of those errors mean. In any case you should
switch to high-performance login processes:
http://wiki.dovecot.org/LoginProcess
http://wiki.dovecot.org/PerformanceTuning has more stuff
Re: [Dovecot] dovecot OCFS2 Cluster
On 5/12/2011 6:00 PM, Osvaldo Alvarez Pozo wrote:
Hi all
I migrated from dovecot 1.2 to dovecot 2.0
Next step migrate from maildir to mdbox
I have being reading about migrating to mdbox as Timo pointed me out.
But I have douths with namespace. I tried to use dsync and I got a
error:
dsync(root): Fatal: Mail locations must use the same virtual mailbox
hierarchy separator (specify separator for the default namespace)
Please provide the exact command line that resulted in this error.
I think It could be solved adding:
namespace {
inbox = yes
separator = /
subscriptions = yes
}
Actually I have no namespace definition. If i add namespace definition
for start migrating, waht about my clients? will they be able to find
there mail mailboxes while I am migrating from maildir to mdbox?
Is this http://wiki2.dovecot.org/Tools/Dsync the documentation you read?
--
Stan
Re: [Dovecot] dovecot OCFS2 Cluster
On 13.5.2011, at 1.00, Osvaldo Alvarez Pozo wrote: Actually I have no namespace definition. If i add namespace definition for start migrating, waht about my clients? will they be able to find there mail mailboxes while I am migrating from maildir to mdbox? Your clients see the default namespace if it's not explicitly specified. That namespace has prefix= and the separator depends on what mailbox format you're using. With Maildir that would be . character. If you keep that there shouldn't be even any potential problems.
Re: [Dovecot] dovecot OCFS2 Cluster
On Mon, 2011-04-25 at 19:02 +0200, Osvaldo Alvarez Pozo wrote: hi all We have an ocfs2 cluster compose of 4 Debian lenny serveurs wich have access to an ISCSI LUN we have create a partition on this Lun and formated this partition as OCFS2. 2 serveurs does mail delivery (SMTP) and the two other are pop/imap servers. The smtp servers use dovecot LDA to deliver to mailboxes. La version de dovecot is 1.2.13, ldirectord balance conexion to the servers(pop/pops/imap/imaps to the two imap/pop serveurs) (smtp to the two smtp servers). With v2.0 I'd suggest using http://wiki2.dovecot.org/Director mail_location = maildir:/var/vmail/%d/%u/Maildir Cluster filesystems don't seem to like Maildir much. With v2.0 you could use mdbox. We are having severals problems from cpu stuck for 61 seconds to too many connexion. I don't know what either of those errors mean. In any case you should switch to high-performance login processes: http://wiki.dovecot.org/LoginProcess http://wiki.dovecot.org/PerformanceTuning has more stuff
Re: [Dovecot] dovecot OCFS2 Cluster
Am 27.04.2011 00:50, schrieb Joseph Tam: Robert Schetterer rob...@schetterer.org writes: Anyway, why use lmtp over lda ? i.e avoid backscatter by overquota A clarification on this: backscatter (or rather, ambiguous NDR notices that claim many users are over quota rather than just one) is a result of a local mailer that support multiple recipient delivery in one invocation, but can only return one result code to the MTA. Since Dovecot's deliver-lda does not support multiple recipient delivery, this is not a problem. LMTP can support multiple deliveries of the same message per invocation, but replies with individual SMTP codes to avoid the above problem. It can take advantage of this to efficiently implement single instance storage if it is enabled. in my understanding lmtp acts more like a mta so overquota reject can be send during smtp income stage i.e with postfix, to the sender client with lda this isnt possible cause the the mta does give the whole mail to lda which and mta send recieved to the sender client ( so the bounce must be send later by binary sendmail etc ) whatever this is the behavior i ve tested in my setups, may Timo correct me if i fail here performance should better too Apart from multiple deliveries or SIS, I'm not sure this is true, or significant if it were. yes this should be meassured, youre right i dont know too if its really performance relevant, but multiple deliver is nice to have anyway, why should not use it Joseph Tam jtam.h...@gmail.com however i see no reason to use lda longer in my setups as lmtp exits youre right the backscatter case is really rare anyway -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria
Re: [Dovecot] dovecot OCFS2 Cluster
Robert Schetterer rob...@schetterer.org writes: Anyway, why use lmtp over lda ? i.e avoid backscatter by overquota A clarification on this: backscatter (or rather, ambiguous NDR notices that claim many users are over quota rather than just one) is a result of a local mailer that support multiple recipient delivery in one invocation, but can only return one result code to the MTA. Since Dovecot's deliver-lda does not support multiple recipient delivery, this is not a problem. LMTP can support multiple deliveries of the same message per invocation, but replies with individual SMTP codes to avoid the above problem. It can take advantage of this to efficiently implement single instance storage if it is enabled. performance should better too Apart from multiple deliveries or SIS, I'm not sure this is true, or significant if it were. Joseph Tam jtam.h...@gmail.com
Re: [Dovecot] dovecot OCFS2 Cluster
Hi all
I decided to upgrade to 2.0 i compiled dovecot with ssl and mysql, but
i have problems with lmtp configuration.
this is the error.
pr 27 01:04:36 debian dovecot: auth: Fatal:
net_connect_unix(auth-worker) in directory
/usr/local/dovecot/var/run/dovecot failed: Permission denied
(euid=65534(nobody) egid=65534(nogroup) missing +r perm: auth-worker,
euid is not dir owner)
Apr 27 01:04:36 debian dovecot: lmtp(25961): Error: userdb
lookup(u...@exemple.org): Disconnected unexpectedly
Apr 27 01:04:36 debian dovecot: master: Error: service(auth): command
startup failed, throttling
dovecot.conf
auth_mechanisms = plain login
disable_plaintext_auth = no
first_valid_uid = 5000
last_valid_uid = 5000
mail_access_groups = mail
mail_location = maildir:/var/vmail/%d/%u/Maildir
ssl = no
passdb {
args = /etc/dovecot/sql.conf
driver = sql
}
plugin {
quota = maildir:User quota
}
protocols = imap pop3 lmtp
service auth {
unix_listener auth-userdb {
group = mail
mode = 0660
user = vmail
}
unix_listener /var/spool/postfix/private/auth {
group = mail
mode = 0660
user = postfix
}
user = nobody
}
service lmtp {
unix_listener /var/spool/postfix/private/dovecot-lmtp {
group = postfix
mode = 0660
user = postfix
}
}
userdb {
driver = prefetch
}
userdb {
args = /etc/dovecot/sql.conf
driver = sql
}
protocol imap {
imap_client_workarounds = delay-newmail
mail_plugins = quota imap_quota
}
protocol pop3 {
mail_plugins = quota
pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
pop3_uidl_format = %08Xu%08Xv
}
!include conf.d/*.conf
20-lmtp.conf
protocol lmtp {
# Space separated list of plugins to load (default is global mail_plugins).
#mail_plugins = $mail_plugins
postmaster_address = ad...@exemple.org
}
I think is a permisson problem, in the conf i set group = mail mode
= 0660 user = vmail i should not have problems, rigth?
Thanks you all
2011/4/27 Joseph Tam jtam.h...@gmail.com:
Robert Schetterer rob...@schetterer.org writes:
Anyway, why use lmtp over lda ?
i.e avoid backscatter by overquota
A clarification on this: backscatter (or rather, ambiguous NDR notices
that claim many users are over quota rather than just one) is a result
of a local mailer that support multiple recipient delivery in one
invocation, but can only return one result code to the MTA.
Since Dovecot's deliver-lda does not support multiple recipient delivery,
this is not a problem.
LMTP can support multiple deliveries of the same message per invocation,
but replies with individual SMTP codes to avoid the above problem.
It can take advantage of this to efficiently implement single instance
storage if it is enabled.
performance should better too
Apart from multiple deliveries or SIS, I'm not sure this is true, or
significant if it were.
Joseph Tam jtam.h...@gmail.com
[Dovecot] dovecot OCFS2 Cluster
hi all
We have an ocfs2 cluster compose of 4 Debian lenny serveurs wich have
access to an ISCSI LUN we have create a partition on this Lun and
formated this partition as OCFS2.
2 serveurs does mail delivery (SMTP) and the two other are pop/imap
servers. The smtp servers use dovecot LDA to deliver to mailboxes. La
version de dovecot is 1.2.13, ldirectord balance conexion to the
servers(pop/pops/imap/imaps to the two imap/pop serveurs) (smtp to the
two smtp servers).
this is a part of my dovecot.conf
mail_location = maildir:/var/vmail/%d/%u/Maildir
mail_access_groups = mail
first_valid_uid = 5000
last_valid_uid = 5000
mail_max_userip_connections = 100
maildir_copy_with_hardlinks = yes
disable_plaintext_auth = no
dotlock_use_excl=yes
mmap_disable = yes
protocols = imap imaps pop3 pop3s managesieve
protocol imap {
mail_plugins = quota imap_quota
imap_client_workarounds = outlook-idle delay-newmail
}
protocol pop3 {
mail_plugins = quota
pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
pop3_uidl_format = %08Xu%08Xv
}
protocol lda {
mail_plugins = quota sieve
log_path = /var/log/dovecot-deliver.log
info_log_path = /var/log/dovecot-deliver.log
}
protocol managesieve {
managesieve_implementation_string = dovecot
}
auth default {
mechanisms = plain login
passdb sql {
args = /etc/dovecot/sql.conf
}
userdb prefetch {
}
userdb sql {
args = /etc/dovecot/sql.conf
}
user = nobody
socket listen {
master {
path = /var/run/dovecot/auth-master
mode = 0660
user = vmail
group = mail
}
client {
path = /var/spool/postfix/private/auth
mode = 0660
user = postfix
group = mail
}
We are having severals problems from cpu stuck for 61 seconds to
too many connexion.
I wonder if there is a configuation type of dovecot when using ocfs2.
In tje dovecot site they give advices about how to configure dovecot
when using NFS, but not about OCFS2.
Somme people say that lda shuld not be used.
Any help please?
Thanks
nebano
Re: [Dovecot] dovecot OCFS2 Cluster
Am 25.04.2011 19:02, schrieb Osvaldo Alvarez Pozo:
hi all
We have an ocfs2 cluster compose of 4 Debian lenny serveurs wich have
access to an ISCSI LUN we have create a partition on this Lun and
formated this partition as OCFS2.
2 serveurs does mail delivery (SMTP) and the two other are pop/imap
servers. The smtp servers use dovecot LDA to deliver to mailboxes. La
version de dovecot is 1.2.13, ldirectord balance conexion to the
servers(pop/pops/imap/imaps to the two imap/pop serveurs) (smtp to the
two smtp servers).
this is a part of my dovecot.conf
mail_location = maildir:/var/vmail/%d/%u/Maildir
mail_access_groups = mail
first_valid_uid = 5000
last_valid_uid = 5000
mail_max_userip_connections = 100
maildir_copy_with_hardlinks = yes
disable_plaintext_auth = no
dotlock_use_excl=yes
mmap_disable = yes
protocols = imap imaps pop3 pop3s managesieve
protocol imap {
mail_plugins = quota imap_quota
imap_client_workarounds = outlook-idle delay-newmail
}
protocol pop3 {
mail_plugins = quota
pop3_client_workarounds = outlook-no-nuls oe-ns-eoh
pop3_uidl_format = %08Xu%08Xv
}
protocol lda {
mail_plugins = quota sieve
log_path = /var/log/dovecot-deliver.log
info_log_path = /var/log/dovecot-deliver.log
}
protocol managesieve {
managesieve_implementation_string = dovecot
}
auth default {
mechanisms = plain login
passdb sql {
args = /etc/dovecot/sql.conf
}
userdb prefetch {
}
userdb sql {
args = /etc/dovecot/sql.conf
}
user = nobody
socket listen {
master {
path = /var/run/dovecot/auth-master
mode = 0660
user = vmail
group = mail
}
client {
path = /var/spool/postfix/private/auth
mode = 0660
user = postfix
group = mail
}
We are having severals problems from cpu stuck for 61 seconds to
too many connexion.
I wonder if there is a configuation type of dovecot when using ocfs2.
In tje dovecot site they give advices about how to configure dovecot
when using NFS, but not about OCFS2.
Somme people say that lda shuld not be used.
Any help please?
Thanks
nebano
first upgrade your dovecot and i.e postfix to latest versions
use lmtp instead of lda
read
http://wiki1.dovecot.org/MailLocation/SharedDisk
look archives here
i use 5000 mailboxes on maildir with drbd ocfs2 ,no problem so far
there is an option mail if you format with ocfs2
look bottlenecks with your ISCSI
as the nature of the beast there may be several reasons for your problem
but there is no known reason or bug to me why you shouldnt use ocfs2
you need to make more analysis
--
Best Regards
MfG Robert Schetterer
Germany/Munich/Bavaria
[Dovecot] Dovecot + OCFS2
Hello, I intend to make a cluster with Dovecot + OCFS2. The tests are working with the default settings of the Dovecot. But it seems too easy to be true. Is there any special configuration of Dovecot to implement it?-- Thank you -- []'s Thiago Henrique Network Administration Digirati Networks K8 Networks
Re: [Dovecot] Dovecot + OCFS2
On Mon, 2010-07-12 at 16:12 -0300, Thiago Henrique wrote: Hello, I intend to make a cluster with Dovecot + OCFS2. The tests are working with the default settings of the Dovecot. But it seems too easy to be true. Be sure to stress test with imaptest tool, with two of them running simultaneously on same user's mailbox in 2 (or more) Dovecot servers. http://imapwiki.org/ImapTest Is there any special configuration of Dovecot to implement it?-- At least mmap_disable=yes is a good idea.
Re: [Dovecot] Dovecot + OCFS2
Hi, The load reaches 20, which is not that far from your MAX_DAEMON_CHILDREN directive in sendmail. You should try to find why the delivery processes are so slow to accomplish. Maybe it's a I/O backend problem. (I have experienced the same kind of problems with drbd writing, and slow hard disks) For example, during a mailling delivery, check the wait (wa) state of your cpu with the command 'vmstat 1'. A high value reflect the cpu time spent in waiting for I/O. Hope this helps, sam Jon Blazquez a écrit : Thank you for your response, With sendmail we have achieved to limit the load : define(`confMAX_DAEMON_CHILDREN', `15') define(`confCONNECTION_RATE_THROTTLE', `2')dnl define(`confQUEUE_LA', `5')dnl define(`confREFUSE_LA', `4')dnl With this configuration the LOAD only reaches 20 ;-) but it’s not the solution. The cluster is formed by 3 nodes. The load balancer sends mails to a node, when it's full (LOAD 4-5) it denies receiving more mails so the load balancer sends them to the following node in the cluster and so on... In the first node the load continues increasing until it reaches roughly 20, then it falls down. This is a temporary solution but we don’t know where exactly the problem is: dovecot’s deliver, ocfs2…. Any help would be appreciated, Jon Tomi Hakala escribió: Jon Blazquez wrote: The system works fine but when there are mailing lists the load increases dramatically. Any suggestions? First thing that I would do is to reduce number of concurrent deliver processes. I have no clue how this is done with Sendmail but with Postfix one could adjust deliver process maxproc value in master.cf. Tomi
Re: [Dovecot] Dovecot + OCFS2
Jon Blazquez wrote: The system works fine but when there are mailing lists the load increases dramatically. Any suggestions? First thing that I would do is to reduce number of concurrent deliver processes. I have no clue how this is done with Sendmail but with Postfix one could adjust deliver process maxproc value in master.cf. Tomi
Re: [Dovecot] Dovecot + OCFS2
Thank you for your response, With sendmail we have achieved to limit the load : define(`confMAX_DAEMON_CHILDREN', `15') define(`confCONNECTION_RATE_THROTTLE', `2')dnl define(`confQUEUE_LA', `5')dnl define(`confREFUSE_LA', `4')dnl With this configuration the LOAD only reaches 20 ;-) but it’s not the solution. The cluster is formed by 3 nodes. The load balancer sends mails to a node, when it's full (LOAD 4-5) it denies receiving more mails so the load balancer sends them to the following node in the cluster and so on... In the first node the load continues increasing until it reaches roughly 20, then it falls down. This is a temporary solution but we don’t know where exactly the problem is: dovecot’s deliver, ocfs2…. Any help would be appreciated, Jon Tomi Hakala escribió: Jon Blazquez wrote: The system works fine but when there are mailing lists the load increases dramatically. Any suggestions? First thing that I would do is to reduce number of concurrent deliver processes. I have no clue how this is done with Sendmail but with Postfix one could adjust deliver process maxproc value in master.cf. Tomi -- _ Jon Blázquez Diez [EMAIL PROTECTED] Servicios Informáticoshttps://www.unav.es/SI/ Universidad de Navarrahttps://www.unav.es _
[Dovecot] Dovecot + OCFS2
Hello, We are running Red Hat Enterprise Linux AS release 4 (Nahant Update 4) with OCFS2 for our mail servers. There are three nodes in the cluster with shared storage and OCFS2 filesystem on it. The filesystem is used for mail storage(using Maildir layout) and is accessed by smtpd, pop3 and imap processes(DOVECOT). The system works fine but when there are mailing lists the load increases dramatically. It only occurs when there are mailing lists. We have tested it in lab with good results and now in production we are having some load problems caused by dovecot´s deliver process. In lab we had sent lots of mails but always to a few accounts. It was OK. Now there are sent less mails but there are more accounts. The load increases until it reaches about 100 and only restart fixes the problem. The umounting of the OCFS2 filesystem is not possible even when all process accessing it are killed. Any suggestions? TIA Info: Three nodes. OS: Red Hat Enterprise Linux AS release 4 (Nahant Update 4) Mailbox format: Maildir SMTP daemon: Dovecot deliver + Sendmail OCFS2 version: 1.2.5-6 Kernel Version: 2.6.9-42.0.10.ELsmp Pop3 and imap daemon: Dovecot 1.0.3 -- _ Jon Blázquez Diez [EMAIL PROTECTED] Servicios Informáticoshttps://www.unav.es/SI/ Universidad de Navarrahttps://www.unav.es _
