similar to: e1000 gig nic howto?

I've got xen-3.0.3-105.el5_5.5 running on Centos 5.5 and all is running smooth but I notice that any VMs running under it only have access to Realtek RTL8139C at 100 Mbps nics. We have 4 x 1G nics configured in a port channel so I'd really like to be able to give my VMs 1000Mbps nics. Does anyone know if this is possible and how to do it? If not, does KVM support faster nics because at

I've just setup nic bonding on our server (DL585-G7 running Centos 5.5 x86_64) as detailed on the wiki: http://wiki.centos.org/TipsAndTricks/BondingInterfaces and all seems fine but from other "howto's" I've seen on the web, they're should be a /proc/net/bond0/info As far as I can see, I don't have one and I'm not sure if it should be there or its absence is a

Hi all, I'm just poking thru our previous sysadmin's user adding script and saw reference to a ~/.forward file containing the users email address. Any idea what it might be for? It's a tricky one to Google ;-) Thanx, Russell Smithies ? ======================================================================= Attention: The information contained in this message and/or attachments from

I have nic bonding (mode=802.3ad) setup on 2 servers, both running Centos 5.5 In the "Active Aggregator Info", on one reports 4 ports - which is correct - but the other only reports 3 ports. It''s always eth0 that shows a different aggregator ID. Changing the cables around so it hits a different port on the switch makes no difference. The switch is correctly configured for the

I have a new server with multiple nics running Centos 6.2 and I'd like to force all NFS traffic over one nic. We're using FreeNAS to dish out NFS shares and I have different IPs on my 2 nics but how can I get the server to mount the share over one particular nic? Or is there a better way to do it? Thanx, Russell Smithies

I came across an old post comment yesterday (from http://echenh.blogspot.com/2010/04/how-to-extend-lvm-on-vmware-guest-os.html ) discussing the "hack" of LVM on Linux VM guests and whether it's better not to use it to simplify disk management. I've re-posted the comment below, does it sound reasonable? Is it better to not use LVM on Linux VM guests? --Russell

I'm trying to rsync a 8TB data folder containing squillions of small files and it's taking forever (i.e. weeks) to get anywhere. I'm assuming the slow bit is check-summing everything with a single CPU (even though it's on a 12-core server ;-( ) Is it possible to do something simple like scp the whole dir in one go so they're duplicates in the first instance, then get rsync to

This may be more of a general linux question but is there a simple way of preventing users from creating symlinks to or from certain directories? I have a /scratch dir that's a single 27TB volume and I don't want users linking their home dirs as there's a chance it will screw up our external backups. Is this a job for SELinux? Any ideas? Thanx, Russell

For a high-performance system (64-cores, 512GB RAM, 5TB local disk, 110TB NFS-mounted storage) is there any advantage of dropping lvm and mounting partitions directly? We're not planning on changing partition sizes, but if we did we'd probably do a full rebuild. Has anyone done performance testing to show that lvm isn't crippling I/O? Thanx, Russell

We're looking at using windbind and AD for our user account details but have run into a small snag. All user accounts in AD are upper case but our linux accounts are lower-case. Is there a simple solution we've overlooked? We really don't want to have to hack this... Thanx, Russell SMithies ======================================================================= Attention: The

I've recently upgraded a Centos 5.3 machine to Centos 5.5. The hardware isn't HVM capabile so I'm only running para-virt guests. Using a vanilla i386 kernel boots without, but the newer kernel-xen locks up the Dom0 after a couple of minute. I'm only booting into single user mode for these tests so no VMs are active. *kernel-xen-2.6.18-128.1.10.el5 - no issues

I have nic bonding (mode=802.3ad) setup on 2 servers, both running Centos 5.5 In the "Active Aggregator Info", on one reports 4 ports - which is correct - but the other only reports 3 ports. It's always eth0 that shows a different aggregator ID. Changing the cables around so it hits a different port on the switch makes no difference. The switch is correctly configured for the port

All, I've spent quite a few hours trying to figure this out to no avail... I have two machines and the result is the same on both. Additionally, each machine does not support full hardware virtualization... I am able to create 8 VMs. When attempting to create ninth VM, I get the following error: Error: Device 51712 (vbd) could not be connected. /etc/xen/scripts/block failed; error

Hi, This is semi-OT, but is Centos-related. I'm looking for an IPTables GUI to help us with our expanding network configuration. I know there's plenty out there, but most of them seem to manage the firewall on the computer on which they run, or only handle one firewall at a time. I need one that can easily manage multiple firewalls from some sort of central location/repository, i.e.

>Message: 23 >Date: Tue, 3 Jul 2007 08:19:43 +1200 >From: "Miskell, Craig" <Craig.Miskell at agresearch.co.nz> >Subject: RE: [CentOS] good resources for making RPMs > <D5DBA313349A4B458528BE63B387F36C05792DB2 at imail.agresearch.co.nz> Craig: Did you see the message Johnny posted a few days ago? I think he was looking for people who use CentOS in New

Hi, I hope someone could give me help with following problem on centos 5.8 kernel and nfs4. On server i have bind mounted directory shared to the client with following setup: mounted directory: /srv/nfs/imagetest on /exports/imagetest type none (rw,bind) /etc/exports file: /exports 10.0.4.0/24(ro,insecure,sync,wdelay,no_subtree_check,no_root_squash,fsid=0,crossmnt)

I have two Centos servers here..only one of them is having this issue. Resolving Dependencies --> Populating transaction set with selected packages. Please wait. ---> Downloading header for glibc to pack into transaction set. glibc-2.3.4-2.19.i686.rpm 100% |=========================| 118 kB 00:00 ---> Package glibc.i686 0:2.3.4-2.19 set to be updated ---> Downloading header for

Hi everyone, I'm using lmer and estimable (from packages lme4 and gmodels respectively) and have the disconcerting happening that when I run exactly the same code, I get different results! In checking this out by running the code 50x, it seems to be that answers may be randomly deviating around those which I get from another stats package (GenStat, using the linear mixed models functionality

hi All, A fault on our SAN dropped us down to a read-only filesystem and after reboot, we have an "Unexpected Inconsistency" and I am being instructed by the boot to run fsck manually without -a or -p (this was after I think processing around 15% of the filesystem) The specific message is "inode 27344909 has illegal blocks" I recall running fsck some years ago on smaller

Hi, I''m trying to install xen with this configuration: dom0 -> Centos 5.3 dom1 -> Fedora 10 dom2 -> Fedora 10 Centos kernel = (2.6.18-128.1.10.el5.centos.plusxen) XEN Version = 3.0.3 I''m having some problems trying to install xen on my mychine, but i''ve been able to solve all of them but one: i can''t reach my gateway from