similar to: Best practices on KVM systems

Hello, I'm trying to fix an issue with a Directory Split on a gluster 3.10.3. The effect consist of a specific file in this splitted directory to randomly be unavailable on some clients. I have gathered all the informations on this gist: https://gist.githubusercontent.com/lucagervasi/534e0024d349933eef44615fa8a5c374/raw/52ff8dd6a9cc8ba09b7f258aa85743d2854f9acc/splitinfo.txt I discovered the

Hello, i'm trying to convert my physical web servers to a virtual guest. What i'm experiencing is a poor disk i/o, compared to the physical counterpart (having strace telling me that each write takes approximately 100 times the time needed on physical). Tested hardware is pretty good (HP Proliant 360p Gen8 with 2xSAS 15k rpm 48 Gb Ram). The hypervisor part is a minimal Centos 6.5 with

Hi, Wondering if this is the proper bridging technique to use for Centos6+KVM; http://wiki.centos.org/HowTos/KVM Before I embark on this again, I would like to do it by the book. Thanks in advance, - aurf

Hi, I am doing xen in box gsoc project. The aim of the project is to have custom installer ISO which delivers xen stack running on c7 along with necessary bridge networking configuration. But I am getting confused over how to package bridge networking settings, so that I can deliver that during installation itself. I can use bridge-utils and package ifcfg-* files as differnet package. But for

Hello, I'll soon have to migrate our samba shares to a netapp filer (not my decision). Currently the shares are on an xfs filesystem and served by samba 3.5.2, which is also the domain controller (a role that it will maintain, only the shares are being transferred) and sama/unix users are in ldap. The filer is in the domain and uses ldap to map user ids and that seems to work. Samba maps the

We have an application that has many processing threads writing more than a billion files ranging from 2KB ? 50KB, with 50% under 8KB (currently there are 700 million files). The files are never deleted or modified ? they are written once, and read infrequently. The files are hashed so that they are evenly distributed across ~1,000,000 subdirectories up to 3 levels deep, with up to 1000 files

Hallo, I'm using a self-made script to get the code a user enters on my applications. Sadly, the code doesn't work, i push the digits, but the result is always an empty data. (code=200, result=1, data= ''). Here is the code: set_time_limit(99999999999999); require('phpagi.php'); $agi = new AGI(); $agi->answer(); function printdebug($a) { global $agi;

I had so much trouble putting Centos 6 guest VMs on a Centos 5 host that I finally switched to a Centos 6 host. I've not needed more that test VMs, so I've used Virtual Machine Manager on the old system, which worked pretty well, so I decided to create my first KVM guest machine. I noticed when I created it, I only had the options of NAT for my network interface, so I used that

Hi List, I have been searching for the correct createrepo command to make a 6.4 respin. We have been doing this with previous versions using createrepo -u "media://$discinfo" -g ${DIR}/my_kickstart${VER}/comps.xml . Which had worked fine until now. Thanks, -- Stephen Clark *NetWolves* Director of Technology Phone: 813-579-3200 Fax: 813-882-0209 Email: steve.clark at netwolves.com

I have seen those documents, I did not see anything that indicates how _automatic_ bridge configuration could be enabled with xl. For my specific set up I have two bridges (xenbr0 -> peth0 & xenbr1 -> peth1). If I have to configure this manually with ifcfg scripts I will, but if an automatic method is provided or is possible with xl I'd prefer to use that. -Gene On Thu, Jan 29,

Is there a current best practice for a shared filesystem backend for mailboxes (in my case, all virtual accounts)?? NFS 3/4, GFS2, GlusterFS, other?? In the case of the latter ones, is the use of Director necessary?? Any specific anti-recommendations?? Also, if it matters, I *think* I want to use BackBlaze racks for storage.? Also, I've seen recommendations for the filesystem underneath like

Jeremy Allison wrote on 1/22/15 11:01 AM: > On Tue, Jan 20, 2015 at 03:40:48PM -0800, Jeremy Allison wrote: >> So I just spent a frustrating day trying to >> get smbclient from 4.2.x and master connecting >> to a NetApp 8.2 box using SMB2 or SMB3 with >> NTLM auth. >> >> Short answer - it doesn't work :-(. Longer >> answer - the NetApp is choking on

Hi, Thank you for you input! We tried that already. That, however, doesn't do the same thing. It is then simply a DFS server and not the "magical" msdfs proxy - yes the user can now click on a link to get to the desired spot, but the proxy function _automagically_ sends the user, when they access the msdfs share, to the netapp's readonly share without the extra click. And it

Michal wrote: > -----Original Message----- > From: Michal Privoznik [mailto:mprivozn@redhat.com] > Sent: Wednesday, July 10, 2013 12:45 PM > To: Lentes, Bernd > Cc: libvirt-ML (libvirt-users@redhat.com) > Subject: Re: [libvirt-users] guests not shutting down when > host shuts down > > On 10.07.2013 11:37, Lentes, Bernd wrote: > > Hi, > > > > i have a

On 07/31/2017 02:55 PM, Michal Hocko wrote: > On Mon 31-07-17 12:13:33, Wei Wang wrote: >> Ballooned pages will be marked as MADV_DONTNEED by the hypervisor and >> shouldn't be given to the host ksmd to scan. > Could you point me where this MADV_DONTNEED is done, please? Sure. It's done in the hypervisor when the balloon pages are received. Please see line 40 at

On 07/31/2017 02:55 PM, Michal Hocko wrote: > On Mon 31-07-17 12:13:33, Wei Wang wrote: >> Ballooned pages will be marked as MADV_DONTNEED by the hypervisor and >> shouldn't be given to the host ksmd to scan. > Could you point me where this MADV_DONTNEED is done, please? Sure. It's done in the hypervisor when the balloon pages are received. Please see line 40 at

Hey there, Has anyone tackled the best way to shut down a VM running Win10 running in RedHat's (CentOS 7) KVM/QEMU VM manager? I'm looking at this link to follow:

No luck with qemu-kvm-ev, the behavior is the same. Running perf record -a -g on the baremetal shows that most of the CPU time is in _raw_spin_lock Children Self Command Shared Object Symbol - 93.62% 93.62% qemu-kvm [kernel.kallsyms] [k] _raw_spin_lock - _raw_spin_lock + 45.30%

For myself KSM is unpredictable feature. The problem is Compute, just this node does "copy on write" , so only Compute. My concern exactly is where would it lead to worse or better Guest behavior ? I am not expecting complete fix. I would track via top/htop and dmesg via Cron on 1-2 hr period. ________________________________ From: centos-virt-bounces at centos.org

Hello Andy, The CentOS 6.9 kernel we are using is 2.6.32-696.el6.x86_64. Regards, Mark Woolfson MW Consultancy Ltd Leeds United Kingdom Tel: +44 113 259 1204 Mob: +44 786 065 2778 -----Original Message----- From: Andreas Benzler Sent: Wednesday, May 31, 2017 9:54 AM To: CentOS mailing list Subject: Re: [CentOS] CentOS 6.9 Skylake soft error Hello Mark, which kernel you use? Sometimes it is