Debian Configuration :: Changing Linux I / O Scheduler For VMware Guest
Mar 22, 2016
Following VMware recommendations on how to change linux I/O scheduler for guests, I'm trying to do it on my VM machine running Debian Wheezy. At the moment I'm running kernel backports:
Code: Select all$ uname -a
Linux brutus2 3.16.0-0.bpo.4-amd64 #1 SMP Debian 3.16.7-ckt20-1+deb8u3~bpo70+1 (2016-01-19) x86_64 GNU/Linux
The default I/O scheduler at the moment for device /dev/sda is CFQ, and I can change it on the fly to NOOP:
Code: Select all$ cat /sys/block/sda/queue/scheduler
noop deadline [cfq]
$ echo noop > /sys/block/sda/queue/scheduler
$ cat /sys/block/sda/queue/scheduler
[noop] deadline cfq
[CODE]..
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Aug 18, 2010
I was doing some thing on networking on virtual machine (rhel 3 as guest os) and winxp as host .. now when i started my guest os (linux) the login page letters (like username and password) size became very large so that i could not see them (crossed the screen) .
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Oct 14, 2015
I have debian8.2 installed in VMware 12 with gnome desktop as guest os.
It boot into gnome successfully. But it will not boot into CLI mode and recovery mode. While boot into CLI, It is stucked in a blank screen, no cursor, after long long boot log splash in the screen.
To boot into CLI rather than gnome, I just set default.target into multi-user.target for systemd. I checked the syslog for boot into CLI, found that systemd execute getty 1~6, but it seemed to no success log and it seem to no other log for systemd. Is it failed to getty?
I check the grapyical.target and multi-user.target in systemd, find multi-user.target is the only one target required by graphical.target. Multi-user.target can be execute successfully during boot into graphical mode, while it will not be successfully execute during boot into CLI mode. That's is so unpredicted. Is there something else I missed?
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Jan 2, 2011
I am running Vmware server 2.02 on a Windows-7 host. Also I have installed Debian Lenny as a guest on top of the vmware server.
I have installed Vmwaretools, the screen resolution is fine but the mouse pointer movement isn't smoothly. Side effect: When I move the pointer from the Windows-7 host into the debian desktop windows, the pointer stops at the border for a while and then jumps at ones to the middle of the window.
I have the same problem with squeeze-32-kde-4, lenny-kde-64, lenny-gnome-64. I do not have this problem with Suse linux 32-kde4. When I move the pointer over the windows border, the chape of the pointer changes ( windows > linux ) and the movement is fluently without any interuption.
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Nov 5, 2010
Trying to install an XP Pro virtual machine as a guest in VMware Workstation 7.1.2, fails with the error: "Could not open /dev/vmmon. No such file or directory. Please make sure that the kernel module 'vmmon' is loaded".Host OS is Debian-Lenny. Was able to specify the new virtual machine configuration, but VMware failed to create the new image (because of the error specified in previous paragraph).
Is the problem that Debian is not loading/executing a needed process? Should I be directing this problem to either Debian or VMware? I searched the VMware documentation, and it mentioned something about chkconfig (Redhat), or the rcconf/ksysv utilities to change SUSE configuration levels. I am unfamiliar with the syntax, don't know why this is necessary.
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Oct 3, 2010
I have been using VMware Player for some time to host Fedora VMware images on Windows XP. I have been using Fedora 11 and 12 (both 32 and 64 bit) and recently started to use Fedora 13.
I use as a base the images provided by thoughtpolice. http://www.thoughtpolice.co.uk/
I usually install VMware tools and also keep the images updated (yum update) which sometimes changes the kernel.
I have recently had problems with the snapshots not having a network when I restore them. So far I don't have the problem with Fedora 11 and do have it with Fedora 12 (but used not to). I do have it with Fedora 13.
In each case the problem goes away when I uninstall the VMware tools and comes back when I install them again.
One of the symptoms is that SElinux complains about not being able to do something with /var/run/vmware-active-nics.
It looks to me that something is incorrect in the actions being taken when the snapshot is being restored. It does not happen every time and sometimes the network restores itself.
The network can be restored by rebooting the image.
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Jan 5, 2010
Tryin to update guest additions to match new host. Change fstab to allow exec. Still get permission denied.
debian:/home/bill# cd /cdrom
debian:/cdrom# ls -lh
total 30M
dr-xr-xr-x 3 root root 2.0K 2009-12-17 07:37 32Bit
dr-xr-xr-x 2 root root 2.0K 2009-12-17 07:37 64Bit
-r-xr-xr-x 1 root root 217 2009-12-04 04:06 AUTORUN.INF
[Code]...
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Jun 6, 2011
Debian Testing host, Winduhs XP guest. Winduhs is not allowed to directly access The Internets, and I am not setting up bridging as that makes it possible for the guest to mount layer 2 attacks on the LAN. I need for the guest to tunnel through the host without being able to see anything on the host, so it can then get access to The Internets, while being protected by iptables (Shorewall).
Used to be with VMware I had host-only set and the guest in a different class c (192.168.2.1) from the host (192.168.1.1) I turned on ipforwarding, set Shorewall rules, and it all worked. Now I have everything set with VirtualBox, and it does not work. Guest can ping its interface but not host. Host can ping vboxnet0. Host is supposed to masquerade guest's 192.168.2.1 through to the default out at 192.168.1.1, but it's not. I think a clue is in routing, but I don't know what's wrong.
[code]....
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Jun 19, 2015
I cannot see my debian linux machine in my virgin media router>>attached devices. I can see everything else including my raspberry pi.
The box is headless but I connected up to tv temporary and did ifconfig and got the ip address. I can ssh to it and connect to minecraft server I have running on it but I would like to know why I cannot see it in the router.
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Dec 23, 2015
I have Debian 8 with VBoxGuestAdditions (4.3.18). I can connect to this box from Win7 using RDP (mstsc.exe). When I connect from Windows 10 using mstsc.exe I've got error code 2308. I tried NoMachine, 2XClient, RoyalTS none worked.
W10 connecting with RDP to Linux server? If I would install xrdp onto the Linux server would it work for me?
Is it possible to connect from Win10 to Linux using RDP?
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Aug 8, 2015
I have a laptop connected to internet via wlan0. I also have eth0 interface and with it I share internet. I want to modify/filter all the traffic passing by the first laptop, something like this:
Code: Select all          *---------------------------*
          |    LAPTOP 1      |   *--------------* ?
          |-----*  *------*  *----*   |       |
  INTERNET<------>|wlan0|<-->|MY_APP|<-->|eth0|<---->|ANOTHER LAPTOP|
          |-----*  *------*  *----|   |       |
          *---------------------------*   *--------------*
I know that in FreeBSD it is possible to use ipfw for that purpose, because it build-in into kernel. We set for example rule Code: Select allipfw add divert 2000 ip from any to 1.0.1.1
and we can use our own application to process those packets, reinject them forward etc. It will work also fast, because as I said, it build into kernel.
Is there any standart Linux-based solution to do the same? I found some info about netmap-ipfw. Is this a correct solution? Or I have to use for example IP-aliases and iptables to do that?
I need to process all the IP-packets, not only TCP/UDP/etc-protocol. Solution also must be very fast.
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Jan 5, 2016
After hours of struggles I'm still not able to configure a simple backup from a Debian Jessie server to a Planet branded NAS.
Configuration is as follows:
NAS
user name: user
pass: user12
share name: user. Inside that directory, there is bkp directory where stuff should go. bkp was created using Dolphin.
The NAS offers smb service and is accessible through Dolphin file manager and from Windows stations.
Server also has a user named "user" and a password "1"..
Fstab looks like this:
//192.168.2.3/user /mnt/NAS cifs username=user,password=user12,iocharset=utf8 0 0
The command is: Code: Select allrsync -ahv /home/user/Desktop/ /mnt/NAS/bkp/
Errors are: Code: Select allrsync: chgrp "/mnt/NAS/bkp/." failed: Operation not permitted (1)
and
Code: Select allrsync: mkstemp "/mnt/NAS/bkp/.teszt.YEmVM3" failed: Operation not permitted (1) where teszt is a file created by me and YEmVM3 seems to be randomly generated character string.
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Mar 20, 2016
I have some old linux based games and applications that require old libraries to run.But in the mists of time, I've lost the scripts on how to set up a sandbox environment to run them. Any template for that type of fiddle? I should be able to resource libraries contemporary to the games from my collection of old distros, but my web fu on this matter(jargon) is cracked. It would have to be easier that continually trying to fiddle the MS OS version to run under Wine/PlayOnLinux. I've got Myst II, Civilisation CTP and Railway Tycoon II, although I think the last app I ran was Word Perfect 8.
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Mar 22, 2010
I'm running Ubuntu 9.1 i386 in test with Vmware 2.0.2. I used Radu Cotescu's patch and instructions to get vmware installed. Everything seems to be running fine in the guest machine (CentOS 5), except I can't ssh from the Ubuntu host to the guest machine.
This guest is a clone of one that is running under on my Ubuntu 8.1 host and networking is fine there. I'm wondering if there were changes to routing or bridging in Ubuntu 9.1 to cause this. I've been digging through google for a while, but haven't seen others reporting any issues. This is definitely particular to Karmic Koala though.
The host's routing table is:
Code:
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.1.0 * 255.255.255.0 U 2 0 0 wlan0
192.168.0.0 * 255.255.255.0 U 0 0 0 vmnet3
[code]....
My routing table on the Ubuntu 8.1 host differs by the link-local line only, and the guests are exactly the same.I can ssh from the guest into the host, as 192.168.0.2 is the hosts ip on the vm network. The host should be able to ssh to the guest as it does in Ubuntu 8.1.
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Sep 30, 2009
Red Hat Enterprise Linux 5 kernel supports four I/O schedulers:
- cfq (Completely Fair Queuing)
- deadline
- noop
- anticipatory
I read in documentation that the recommended kernel line settings for 64-bit Red Hat Enterprise Linux 5 running as a VMware guest are:
divider=10 notsc iommu=soft elevator=noop
But for single instance databases with dedicated storage the deadline scheduler is recommended. The deadline scheduler reorders I/O to optimized disk heads movement and caps maximum latency per request to prevent resource starvation for I/O intensive processes. I have an Oracle instance on RHEL5 running as a VMware(ESX) guest with dedicated storage. What scheduler is better in my case?
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Jan 11, 2011
I have a new public mail server running under Vmware Server 2.0 installed on Windows Server 2008. I'm not satisfy about performance, virtual machine has got 3gb of ram and 2 virtual cpu. Physical machine has got one intel xeon cpu 2.4ghz quad core, 8 gb of ram and 3 hdd 500gb raid5. I already set this option: Fit all virtual machine memory into reserved host RAM. How can I increase performance? Are there any kernel build for virtual installation?
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Feb 6, 2016
How to make debian desktop full screen in vmware? I am using vmware workstation ...
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May 25, 2010
I've installed the latest testing version, which has 2.6.32 kernel perfect for me. I was very amazed when check system monitor and saw it runs with 90MB RAM, meanwhile my ubuntu desktop takes only 400, and the pocket version of ubuntu on vmware has 180MB RAM.
The questions is: Debian runs on vmware 7. Could the amount of RAM change when switching to a normal environment? Or I have to test and see what is happening..What problems could occur when using a testing version?
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Sep 3, 2015
I've a Lenovo G50-80T with W8.1. I want to install Debian 8.1 in dualbooting mode. I've done this other times without problems. But this time I want encrypt the Linux partition (not the Windows partition). I'll use dm-crypt to do that. I want to know if this way is secure for protect the data on Linux partition or if I need encrypt the entire drive.
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Feb 5, 2010
[There are quite a few outdated guides relating to older versions of Fedora, so I figured that I'll write it up specifically for Fedora 12 to make life easier for others]
This guide is based on a fully patched Fedora 12 distribution as of Feb 5 2009.
A default install of Fedora 12 as a VMware Image (Guest) will generally fail to install VMware Tools for the following reasons (In the Fedora 12 Guest Image):
1. GCC and related packages are not installed
Make sure that 'yum list gcc*' has at least the following packages installed (these are not installed by default unless you select developer configuration).
[root@localhost ~]# yum list gcc*
Loaded plugins: presto, refresh-packagekit
Installed Packages
gcc.i686 4.4.2-20.fc12 @updates
gcc-c++.i686 4.4.2-20.fc12 @updates
2. Correct kernel-devel packages are not installed. This generally manifests itself via the following prompt:
'What is the location of the directory of C header files that match your running kernel?'
Fedora 12 installs kernel-PAE by default instead of the normal kernel rpm for the i386 distribution. Consequently, the header files required by vmware-config-tools.pl are found in 'kernel-PAE-devel' and not 'kernel-devel'.
[root@localhost ~]# yum list kernel*
Loaded plugins: presto, refresh-packagekit
Installed Packages
[code]...
The symlink /lib/modules/2.6.31.12-174.2.3.fc12.i686.PAE/source should work if the correct kernel-*-devel package is installed. vmware-config-tools.pl seems to only check this link to determine if it has found a legitimate kernel header directory.
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May 26, 2010
I'm trying to install the vmware tools in Fedora 13. I've run the following commands as root:
yum install gcc -y
yum install kernel-devel -y
./vmware-install.pl
...
when it asks for the location of the directory of the C header files that match my running kernel I entered:
/usr/src/kernels/2.6.33.4-95.fc13.i686/include
but vmware-install.pl says:
The path to "/usr/src/kernels/2.6.33.4-95.fc13.i686/inc" is not valid..
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Sep 1, 2011
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Sep 14, 2010
I have VMWare on a notebook, guest Windows running on Linux host. The network in that virtual machine is configured as NAT. I want to share/transfer files from Linux (host) to Windows (guest). So I leave sshd always running on the notebook, I go into Windows and run an SSH/SFTP program. My Wifi router has address 192.168.1.1, my desktop has address 192.168.1.2 and my notebook has address 192.168.1.3. On the notebook, that SSH/SFTP program connects to 192.168.1.3 (i.e. the notebook itself) and everything works fine. But it's a notebook, and when I leave home with it, 192.168.1.3 is no longer accessible. How can I let the guest OS connect to the host OS when I'm away from my Wifi network?
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Command to get guest information in Vmware ESX?
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Apr 14, 2010
i just want to run linux(guest) on winxp(Host)on vmware. where i download linux guest. and how i installed the same in vmware runing on winxp.
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Feb 5, 2009
we are running dedicated server with CentOS. We installed VMware in order to run a win2003 server. the problem is we need to access that server from outside (public).
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2. when vmware was installed we bind it to eth1.
3. we tried assigning eth1's public IP to the vmware machine and its not able to access anything outside.
4. tried to use NAT, bridged and host-only and no luck.
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Sep 4, 2009
I am trying to install vmware tools on redhat 5 linux guest os running on vmworkstation 6.5 with window vista host machine. After running rpm for vmware tool when run vmware-config-tools.pl command it ask for "what is the location of the directory of c header files that match your running kernel ? [/user/src/linux/include]
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Nov 2, 2009
I'm running VMWare Server 2.0 on WindowsXP as host.I have guest O/S Linux Fedora 8. i cannot access USB drives on my VM. USB drive shows up on the VMware console window as part of my devices, like CD/RW drive, etc. But for the usb drive, it is GREYED OUT./proc/partitions never shows a USB device upon connection of the drive. I have tried googling this to death and found no solution that works.
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Feb 12, 2010
I have on my computer 9.1 and I want to try some virtualization. I want to install WinXP or 7 as guest on my U9.1 box. what is your opinion? Which VMware or VirtualBox should I try?
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Apr 9, 2010
I am not able to connect to the internet via Ubuntu guest in Vmware Workstation. Here is the ipconfig:
Here is the ifconfig -a:
I have the vmware os settings to connect through a nat connection and I am able to ping domains however I am unable to open a page in either firefox or chrome.
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