search for: dom0_mem

Displaying 20 results from an estimated 412 matches for "dom0_mem".

2012 Jun 21
GRUB boot parameters: dom0_mem
...Mageia 1, i686) and have noticed that Dom0 is consuming 85% of the memory allocated to the VM (1GB) so I''d like to reduce this as much as possible in order to make more room for one or two VM''s. Is there a minimum amount of vRAM that can/should be allocated to Dom0 (using the dom0_mem boot parameter) considering that I only want to host one or two VM''s? Eric Pretorious Truckee, CA _______________________________________________ Xen-users mailing list
2009 Sep 08
Re: Re: Xorg on JF 2.6.31-rc8 with xen 3.5 unstable
I was able to get login prompt ( commit 7c62209cde5b13b81685e79b2f9e3757e293aef1 ) first time via serial console:- title Xen 3.4.1  Fedora 12 Serial (2.6.31-rc8 ) (/dev/sdb1)   root (hd1,0)   kernel /xen-3.4.1.gz dom0_mem=1024M loglvl=all guest_loglvl=all com1=19200,8n1 console=com1   module /vmlinuz-2.6.31-rc8 ro root=/dev/mapper/vg_fdr12-lv_root console=hvc0 earlyprintk=xen   module /initrd-2.6.31-rc8.img Then disconnected NUL modem cable and loaded Dom0 via : title Xen 3.4.1  Fedora 12 Seria...
2013 Apr 04
[PATCH] xl: extend autoballoon xl.conf option with an "auto" option
From: David Vrabel <> autoballoon=1 is not recommened if dom0_mem was used to reduce the amount of dom0 memory. Instead of requiring users to change xl.conf if they do this, extend the autoballoon option with a new choice: "auto". With autoballoon="auto", autoballooning will be disabled if dom0_mem was used on the Xen command line. For cons...
2007 Feb 01
Problem with dom0_mem and tmpfs on SLES10
...09749-0.7 on SLES10 for x86, when the initrd-xen file was loaded. On console, various messages about "No space left on device" appears later that the "/dev" was monted on a tmpfs filesystem (for udev). The only sollution for this problem at that moment, was remove the "dom0_mem=192M" and the "mem=1024M of my GRUB configuration file (menu.lst on SuSE). My dom0 configurations are: - Intel(R) Xeon(TM) CPU 2.80GHz - 1 GiB RAM grub: title XEN root (hd0,0) kernel /xen.gz dom0_mem=192M module /vmlinuz-xen root=/dev/system/root vga=0x3...
2007 Nov 19
Recommended settings for dom0_mem when using zfs
I have a xVm b75 server and use zfs for storage (zfs root mirror and a raid-z2 datapool.) I see everywhere that it is recommended to have a lot of memory on a zfs file server... but I also need to relinquish a lot of my memory to be used by the domUs. What would a good value for dom0_mem on a box with 4 gig of ram?
2007 Nov 19
Recommended settings for dom0_mem when using zfs
I have a xVm b75 server and use zfs for storage (zfs root mirror and a raid-z2 datapool.) I see everywhere that it is recommended to have a lot of memory on a zfs file server... but I also need to relinquish a lot of my memory to be used by the domUs. What would a good value for dom0_mem on a box with 4 gig of ram?
2008 May 06
Disable memory balloon in dom0
Is there any reason why I would not want to set dom0-min-mem to 0 or to what I set dom0_mem on my kernel line? Setting to 0 or setting to the same value as dom0_mem disables memory balloon correct? I cant seem to think of a reason why I would want memory ballooning. Also setting dom0-min-mem should that be done in xend-config.sxp or on the kernel command line? -- Nick Anderson <...
2008 May 26
SNV82: Not enough memory is available, and dom0 cannot be shrunk any further
...main I get an out of memory exception: Not enough memory is available, and dom0 cannot be shrunk any further Each of my domains only uses 256 so I thought there would be sufficient memory for 4 :-/ I am also using ZFS (maybe this is causing problems?) and have tried using the kernel flag: dom0_mem=2048M Any ideas? Thanks, Christian
2008 Oct 09
Problems at installing Xen 3.3.0
...# mkinitrd -v -f --with=aacraid --with=sd_mod --with=scsi_mod --builtin=ata_piix initrd- # cp initrd- /boot/ 7. configure grub: default=0timeout=10splashimage=(hd0,0)/grub/splash.xpm.gzhiddenmenutitle xen-dom0 kernel /xen.gz dom0_mem=2097152 module /vmlinuz- ro root=LABEL=/ rhgb quiet crashkernel=128M@16M module /initrd- Red Hat Enterprise Linux Server (2.6.18-53.el5) root (hd0,0) kernel /vmlinuz-2.6.18-53.el5 ro root=LABEL=/ rhgb quiet crashkernel...
2009 Sep 16
Serial logs for 2.6.31 (commit 12e8537b6b29807cb9e13d728b2e5bab40424df7) under Xen Unstable on top of Ubuntu 9.04 Server
Are you expecting improvement after  09/15/2009 new-swiotlb commits ? 4097,6144, "No_dom0_mem_specified" don''t look to me to have any. Boris.   _______________________________________________ Xen-devel mailing list
2012 Dec 19
kernel log flooded with: xen_balloon: reserve_additional_memory: add_memory() failed: -17
...he Xen command line is specifies a fixed dom0 memory allocation and noselfballooning is specified for the kernel and ballooning is also disabled in the xend-config.sxp / xl.conf (one system using xm, another xl) xen command line: placeholder xsave=0 iommu=0 console=vga,com2 com2=115200,8n1 dom0_mem=max:6144m kernel command line: root=/dev/loop0 ro console=tty1 console=hvc0 earlyprintk=xen nomodeset noselfballooning Examining /proc/iomem does show that the dom0 memory allocation is actually 64kb short of 6144Mb: cat /proc/iomem | grep System\ RAM 00010000-0009bfff...
2005 Aug 30
CPU0 is toast error message
# grub.conf generated by anaconda I recently tried installing xen on another machine and I''m getting the "CPU0 is toast rebooting in 5 seconds" message. Reading through past postings, I was hopeful setting the dom0_mem=128M would solve the problem. Unfortunately, it didn''t make a difference. I haven''t fooled with anything on this system -- just a fresh FC4 install, updated everything with yum and tried to get xen going. The machine runs FC4 just fine and has been up for days. If it matters, th...
2006 Aug 31
[PATCH] boot with default on dom0_mem allocation failure.
Hi, this patch makes Xen boot with the default dom0_mem value when the given value exceeds available memory, instead Xen panics and reboots. Administrators have a chance to correct dom0_mem (and other parameters if necessary) after Xen is up with default, seeing the warning message. Tested by booting Domain-0. Signed-off-by: Hiroya INAKOSHI <inako...
2004 Dec 28
error: (XEN) Not enough memory for DOM0 memory reservation.
...r: (XEN) Not enough memory for DOM0 memory reservation Whereafter a poweroff/poweron is the only way ouy. (Machine doesn''t have a reset button, keyboard ctrl-alt-del does not respond) The grub entries are: title Xen 2.0 / XenLinux 2.6.9 kernel (hd0,1)/boot/xen.gz dom0_mem=131072 console=vga module (hd0,1)/boot/vmlinuz-2.6.9-xen0 root=/dev/hda2 ro console=tty0 title Xen2 kernel (hd0,1)/boot/xen.gz dom0_mem=65536 module (hd0,1)/boot/vmlinuz-2.6.8-24.8-xen root=/dev/hda2 vga=0x314 splash=silent desktop re...
2005 Oct 06
Domain 0 allocation is too small for kernel image
...for kernel image That''s the error message I get after installing FC4 and following the instructions on running kernel - I partitioned Fedora to have 6GB on a 30GB drive. I have tried adjusting dom0_mem=256M on a system that has 1GB of RAM and still no luck Any thoughts? -Todd _______________________________________________ Xen-users mailing list
2006 Sep 15
Xen Installation problems
...tall Xen but after a while it crashes and starts rebooting recursively. I have tried both the entries listed below. I am using the following entries in the grub.conf file: title Xen-bhatia 3.0 / XenLinux-bhatia 2.6.16 root (hd0,0) kernel /bhatia/boot/xen-3.0.gz dom0_mem=262144 console=ttyS0,9600n8 console=tty0 module /bhatia/boot/vmlinuz-2.6-xen root=/dev/VolGroup00/LogVol00 rhgb quiet console=ttyS0,9600n8 console=tty0 title Xen 3.0 / XenLinux 2.6.16 root (hd0,0) kernel /xen.gz dom0_mem=262144 console=ttyS0,...
2008 Feb 15
understanding dom0 usage memory
Hi guys, First of all, sorry for my poor english. This is my first message at this list. I''m using Xen on several machines since last November. Right now I''m having a specific problems with 2 servers: both are losing the network on dom0 but all guest systems are still running fine. Looking at those dom0 logs I''ve discovered that sometimes linux kernel OOM-Killer
2011 May 18
Weird xl mem-set behavior
...ory for dom0, I get very bogus results. See here: If I use the M notation (xl mem-set 0 4096M) the outcome is similarily unpredictable, and sometimes I get the memory set to something like 200-300MB and in rare cases a kernel panic. Also, if I set the "dom0_mem=X" kernel parameter, the amount of memory Xen gives to dom0 is fairly random... sometimes 2GB, sometimes 6GB, sometimes ~500MB, regrardless of what value I use or the unit I use (M or no unit, for the default KB). Anyone else has experienced this in Xen 4.1? Thanks! _________________________...
2008 Feb 20
Issue with dom0 xen ballooning
...ystem memory and "balloon" is memory when new domU needs memory. To resolve it, we have to fix the dom0 memory usage to avoid dom0 ballooning and crash in our production environnemnt. The solution seems to pass a parameter at xen boot time (in grub) to limit dom0 memory usage : " dom0_mem=256M " As anyone encounter this type of problems ? Is there any other solution than limitting dom0 memory usage ? Regards -- Frederic Soulier Administrateur Reseau Centre de Ressources Informatiques Universit? Toulouse 1 Sciences Sociales 2 RUE DU DOYEN GABRIEL MARTY 31042 TOULOUSE CEDEX...
2012 Jun 20
acpidump crashes on some machines
...crash. The hypervisor does not matter, I tried 4.1.3-rc2 as well as various unstable versions including 25467, also 32-bit versions of 4.1. The Dom0 kernels were always PVOPS versions, the problems starts with 3.2-rc1~194 and is still in 3.5.0-rc3. Also you need to restrict the Dom0 memory with dom0_mem= The crash says (on a 3.4.3 32bit Dom0 kernel): uruk:~ # ./acpidump32 [ 158.843444] ------------[ cut here ]------------ [ 158.843460] kernel BUG at mm/rmap.c:1027! [ 158.843466] invalid opcode: 0000 [#1] SMP [ 158.843472] Modules linked in: [ 158.843478] [ 158.843483] Pid: 4874, comm...