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<DIV><FONT size=2 face=Arial>Hi Stanislav</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>I don't try to convince to everybody that the
problem not exist, i am only commenting my personal experiences and trying of
help to those in need.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>But if you think that my comments are not
necessaries, please excuse me, and for this topic, I will not do comments
again.<BR>Moreover, I don't know why I don't have this same problem that you
have ¿? ¿? ¿?</FONT></DIV>
<DIV><FONT size=2 face=Arial>I just wanted to cooperate with this community
trying of find the root of this strange problem !!!.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT size=2 face=Arial>Best regards<BR>Cesar</FONT></DIV></DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=ginermail@gmail.com href="mailto:ginermail@gmail.com">Stanislav
German-Evtushenko</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=brain@click.com.py
href="mailto:brain@click.com.py">Cesar Peschiera</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A title=aderumier@odiso.com
href="mailto:aderumier@odiso.com">Alexandre Derumier</A> ; <A
title=pve-devel@pve.proxmox.com
href="mailto:pve-devel@pve.proxmox.com">pve-devel@pve.proxmox.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, April 13, 2015 2:11
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [pve-devel] Default cache
mode for VM hard drives</DIV>
<DIV><BR></DIV>
<P dir=ltr>Hello Cesar,</P>
<P dir=ltr>If you don't have this problem I do not really understand why cut
in any try to convince everybody that the problem does not exist.</P>
<P dir=ltr>Regards,<BR>Stanislav</P>
<P dir=ltr>On Apr 13, 2015 8:46 PM, "Cesar Peschiera" <<A
href="mailto:brain@click.com.py">brain@click.com.py</A>>
wrote:<BR>><BR>> Hi Stanislav<BR>><BR>> Excuse me please, but your
link don't tell me nothing about of the root of the problem of "oos" in DRBD
(assuming that the directive "data-integrity-alg" is
disabled).<BR>><BR>> Also, i have configured in the lvm.conf file
"write_cache_state = 0" (may be this can help you, that is other recomendation
of Linbit)<BR>><BR>> I think that the tuning of DRBD is the key for the
success, that i did in workstations and real servers, and never had problems
of "oos", always with all firmwares of hardware updated and with NICs Intel of
1 Gb/s or 10 Gb/s with bonding balance-rr exclusive for replication of DRBD
(NIC-to-NIC, and i don't know if will work well with the broadcom brand or
with other brands, I never did a test).<BR>><BR>> In real servers, with
I/OAT engine enabled in the BIOS, and with Intel NICs, you get better
performance (and in my case, without get a "oos")<BR>><BR>> Best
regards<BR>> Cesar<BR>><BR>> ----- Original Message ----- From:
Stanislav German-Evtushenko<BR>> To: Cesar Peschiera<BR>> Cc: Alexandre
DERUMIER ; pve-devel<BR>> Sent: Monday, April 13, 2015 12:12
PM<BR>><BR>> Subject: Re: [pve-devel] Default cache mode for VM hard
drives<BR>><BR>><BR>> Hi Cesar,<BR>><BR>><BR>> Out of sync
with cache=directsync happen in very specific cases. Here is the decription of
one of them: <A
href="http://forum.proxmox.com/threads/18259-KVM-on-top-of-DRBD-and-out-of-sync-long-term-investigation-results?p=108099#post108099">http://forum.proxmox.com/threads/18259-KVM-on-top-of-DRBD-and-out-of-sync-long-term-investigation-results?p=108099#post108099</A><BR>><BR>><BR>>
Best regards,<BR>><BR>>
Stanislav<BR>><BR>><BR>><BR>><BR>> On Mon, Apr 13, 2015 at 7:02
PM, Cesar Peschiera <<A
href="mailto:brain@click.com.py">brain@click.com.py</A>>
wrote:<BR>><BR>> Hi to all<BR>><BR>> I use directsync in my VMs
with DRBD 8.4.5 in four nodes (LVM on top of DRBD), since some months ago,
never did have problems (all sunday days, a automated system verify all
storages DRBD),<BR>><BR>> These are the version of packages of my PVE
nodes:<BR>><BR>> In a pair of nodes:<BR>> Shell# pveversion
-v<BR>> proxmox-ve-2.6.32: 3.3-139 (running kernel: 3.10.0-5-pve)<BR>>
pve-manager: 3.3-5 (running version: 3.3-5/bfebec03)<BR>>
pve-kernel-2.6.32-27-pve: 2.6.32-121<BR>> pve-kernel-3.10.0-5-pve:
3.10.0-19<BR>> pve-kernel-2.6.32-28-pve: 2.6.32-124<BR>>
pve-kernel-2.6.32-29-pve: 2.6.32-126<BR>> pve-kernel-2.6.32-34-pve:
2.6.32-139<BR>> lvm2: 2.02.98-pve4<BR>> clvm: 2.02.98-pve4<BR>>
corosync-pve: 1.4.7-1<BR>> openais-pve: 1.1.4-3<BR>> libqb0:
0.11.1-2<BR>> redhat-cluster-pve: 3.2.0-2<BR>> resource-agents-pve:
3.9.2-4<BR>> fence-agents-pve: 4.0.10-1<BR>> pve-cluster: 3.0-15<BR>>
qemu-server: 3.3-3<BR>> pve-firmware: 1.1-3<BR>> libpve-common-perl:
3.0-19<BR>> libpve-access-control: 3.0-15<BR>> libpve-storage-perl:
3.0-25<BR>> pve-libspice-server1: 0.12.4-3<BR>> vncterm: 1.1-8<BR>>
vzctl: 4.0-1pve6<BR>> vzprocps: 2.0.11-2<BR>> vzquota: 3.1-2<BR>>
pve-qemu-kvm: 2.1-10<BR>> ksm-control-daemon: 1.1-1<BR>>
glusterfs-client: 3.5.2-1<BR>><BR>> In other pair of nodes:<BR>>
Shell# pveversion -v<BR>> proxmox-ve-2.6.32: 3.3-139 (running kernel:
3.10.0-5-pve)<BR>> pve-manager: 3.3-5 (running version:
3.3-5/bfebec03)<BR>> pve-kernel-3.10.0-5-pve: 3.10.0-19<BR>>
pve-kernel-2.6.32-34-pve: 2.6.32-139<BR>> lvm2: 2.02.98-pve4<BR>> clvm:
2.02.98-pve4<BR>> corosync-pve: 1.4.7-1<BR>> openais-pve:
1.1.4-3<BR>> libqb0: 0.11.1-2<BR>> redhat-cluster-pve: 3.2.0-2<BR>>
resource-agents-pve: 3.9.2-4<BR>> fence-agents-pve: 4.0.10-1<BR>>
pve-cluster: 3.0-15<BR>> qemu-server: 3.3-5 <-particularly made by
Alexandre<BR>> pve-firmware: 1.1-3<BR>> libpve-common-perl:
3.0-19<BR>> libpve-access-control: 3.0-15<BR>> libpve-storage-perl:
3.0-25<BR>> pve-libspice-server1: 0.12.4-3<BR>> vncterm: 1.1-8<BR>>
vzctl: 4.0-1pve6<BR>> vzprocps: 2.0.11-2<BR>> vzquota: 3.1-2<BR>>
pve-qemu-kvm: 2.2-2 <-particularly made by Alexandre<BR>>
ksm-control-daemon: 1.1-1<BR>> glusterfs-client: 3.5.2-1
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