Displaying 20 results from an estimated 5000 matches similar to: "mmap in GFS2 on rhel 6.1"
2010 Nov 15
3
Local node indexes in a cluster backend with GFS2
Hi, all
this days I'm testing a dovecot setup using lvs, director and a cluster
email backend with two nodes using rhel5 and gfs2. In the two nodes of the
email backend I configured mail location this way:
mail_location =
sdbox:/var/vmail/%d/%3n/%n/sdbox:INDEX=/var/indexes/%d/%3n/%n
/var/vmail is shared clustered filesystem with GFS2 shared by node1 and
node2
/var/indexes is a local
2011 May 05
5
Dovecot imaptest on RHEL4/GFS1, RHEL6/GFS2, NFS and local storage results
We have done some benchmarking tests using dovecot 2.0.12 to find the best
shared filesystem for hosting many users, here I share with you the results,
notice the bad perfomance of all the shared filesystems against the local
storage.
Is there any specific optimization/tunning on dovecot for use GFS2 on
rhel6??, we have configured the director to make the user mailbox persistent
in a node, we will
2010 Nov 13
2
Is Dovecot Director stable for production??
Today I will try Dovecot Director for a setup using a Cluster Backend with
GFS2 on rhel5, my question is if is Director stable for use in production
for large sites, I know is mainly designed for NFS but I believe it will do
the job also for a cluster filesystem like GFS2 and should solve the mail
persistence problem with a node and locking issues.
I plan to add a layer behind a load balancer to
2010 Jul 18
3
Proxy IMAP/POP/ManageSieve/SMTP in a large cluster enviroment
Hi to all in the list, we are trying to do some tests lab for a large scale
mail system having this requirements:
- Scale to maybe 1million users(Only for testing).
- Server side filters.
- User quotas.
- High concurrency.
- High performance and High Availability.
We plan to test this using RHEL5 and maybe RHEL6.
As a storage we are going to use an HP EVA 8400 FC(8 GB/s)
We defined this
2009 Jan 14
2
csgfs 4 really outdated
Centos CSGFS is at this time really outdated compared to current rh
updates and fixes, is the centos team still giving support to this
version???.
Best regards
2013 Aug 21
2
Dovecot tuning for GFS2
Hello,
I'm deploing a new email cluster using Dovecot over GFS2. Actually I'm
using courier over GFS.
Actually I'm testing Dovecot with these parameters:
mmap_disable = yes
mail_fsync = always
mail_nfs_storage = yes
mail_nfs_index = yes
lock_method = fcntl
Are they correct?
RedHat GFS support mmap, so is it better to enable it or leave it disabled?
The documentation suggest the
2008 Nov 06
1
Sync of csgfs and current centos 4 updates
Hi list, I've been trying to update my csgfs stuff to 4.7 this week
but I notice that current csgfs is built against kernel-2.6.9-78.0.1
and is required as a dependence, right now current kernel is
2.6.9-78.0.5 it would be great if csgfs can be rebuilt or updated to
this, so dependences works ok???
Best regards
2008 Nov 20
2
Sync csgfs in centos 4 with current kernel updates
Hi list, any timeframe for the sync of csgfs in centos 4 with current
kernel updates???.
Best regards
2010 Nov 14
1
Recommended quota backend for a virtual users setup using ldap and sdbox
Just that, wich is the recommended quota backend for sdbox in terms of
performance and flexibility running a setup of virtual users with ldap??...
thank's in advance...
2010 Nov 16
1
Email backend monitor script for Director
Hi people, I know I saw this at some point in the list but can't find it, I
need a script wich monitor the health of the email backend and if a node
fails remove it from the director server, once is up again add it, I plan tu
run the script at the load balancer, if you have some let me know..
thank's in advance
2010 Nov 17
1
Dovecot ldap connection reconnecting after inactivity
Hi people, I have a setup configured using ldap, I have noticed that after a
period of user inactivity if a client open connections to dovecot first
attemps fails with this:
Nov 16 19:34:43 cl05-02 dovecot: auth: Error:
ldap(user at xxx.xx.xx,172.29.13.26):
Connection appears to be hanging, reconnecting
After the connections to ldap has been restablished everything starts
working ok, is this a
2011 Nov 03
1
How to define ldap connection idle
I'm having a problem with dovecot ldap connection when ldap server is in
another firewall zone, firewall kills the ldap connection after a
determined period of inactivity, this is good from the firewall point of
view but is bad for dovecot because it never knows the connections has been
dropped, this creates longs timeouts in dovecot and finally it reconnects,
meanwhile many users fails to
2018 Apr 05
1
GFS2 writes extremely slow
Hello all,
We are facing extremely slow GFS2 issues in Redhat 7 64 bit. Backend is 16 Gbps FC SAN so no issues there.
I have scoured the entire (anyways most of the) Internet and arrived at the following settings.
mmap_disable = yes
mail_fsync = always
mail_nfs_storage = yes
mail_nfs_index = yes
mmap_disable = yes
lock_method = fcntl
Did a systemctl restart dovecot and did not find any major
2007 Jan 25
4
Benchmarking
I wasted too much time today doing this, but they do show a few
interesting things:
1) mmap_disable=yes is faster than mmap_disable=no. I didn't expect
this. I'm not yet sure why this is, but possibly because then it updates
the mail index by reading the changes from dovecot.index.log, instead of
reopening and re-mmaping dovecot.index. At least that's the biggest
difference between
2011 Jul 04
0
Dovecot error on rhel 6.1 using GFS2(bug)
Hi, just to let you know to all the people testing dovecot in a RHEL 6.1
setup where nodes are Active/Active and sharing a GFS2 filesystem that there
is a bug on latest rhel6.1 GFS2 kernel modules, and latest updates in 6.0
wich makes dovecot crash a GFS2 filesystem, with a corruption and other
related errors, redhat people have posted a fix for the kernel wich is in
QA:
2007 May 12
3
dbmail benchmarking
I thought I'd try benchmarking with dbmail (v2.2.4) to see how much
slower a SQL backend could actually be. Skip to bottom for the
conclusions.
Originally I ran the tests with the databases being in XFS
filesystem. MySQL's performance was horrible. It went 3-7x faster
with ext3.
MySQL 5.0.30 backend (innodb):
./imaptest clients=1 - append=100 seed=1 secs=30 msgs=1000000 logout=0
2007 Feb 06
3
1.0.rc22 released
http://dovecot.org/releases/dovecot-1.0.rc22.tar.gz
http://dovecot.org/releases/dovecot-1.0.rc22.tar.gz.sig
Found another bad bug in rc19 changes. Wonder why my imaptest catched
the bug only in CVS HEAD but not in branch_1_0 even though both had it.
Anyway, now the imaptest runs nicely for both, and I'm again optimistic
that the bug count is low enough for v1.0 to be released soon :)
BTW. My
2007 Feb 06
3
1.0.rc22 released
http://dovecot.org/releases/dovecot-1.0.rc22.tar.gz
http://dovecot.org/releases/dovecot-1.0.rc22.tar.gz.sig
Found another bad bug in rc19 changes. Wonder why my imaptest catched
the bug only in CVS HEAD but not in branch_1_0 even though both had it.
Anyway, now the imaptest runs nicely for both, and I'm again optimistic
that the bug count is low enough for v1.0 to be released soon :)
BTW. My
2014 Mar 10
1
gfs2 and quotas - system crash
I have tried sending this before, but it did not appear to get through.
Hello,
When using gfs2 with quotas on a SAN that is providing storage to two
clustered systems running CentOS6.5, one of the systems
can crash. This crash appears to be caused when a user tries
to add something to a SAN disk when they have exceeded their
quota on that disk. Sometimes a stack trace is produced in
2011 Jun 08
2
Looking for gfs2-kmod SRPM
I'm searching for the SRPM corresponding to this installed RPM.
% yum list | grep gfs2
gfs2-kmod-debuginfo.x86_64 1.92-1.1.el5_2.2
It is missing from:
http://msync.centos.org/centos-5/5/os/SRPMS/
What I need from the SRPM are the patches. I'm working through
some issues using the source code, and the patches in the RedHat
SRPM