If the output of the df -h command shows the size of the file system mounted on / as 18 GB, your host has the new partition layout.įreeing up space on the Control Domain filesystem now 1. Remove additional logs However, some hosts can use the legacy partition layout if they were upgraded from XenServer version 6.5 or earlier and kept their existing layout or if they are a small device that does not have enough space for the new partition layout. XenServer hosts with this partition layout are less likely to experience this problem.Īll XenServer hosts of version 7.0 and later have this partition layout by default. Logs are saved to a separate dedicated partition. New partition layout: This partition layout allows a dedicated 18 GB partition for the Control Domain.If the output of the df -h command shows the size of the file system mounted on / as 4 GB, your host has the legacy partition layout. Some XenServer hosts of version 7.0 and later use the legacy partition layout this is the case when the host was upgraded from XenServer 6.5 or earlier and kept its existing layout, or when the host is a small device that does not have enough space for the new partition layout. The Control Domain partition is also used for swap and logging.Īll XenServer hosts of version 6.5 and earlier use the legacy partition layout. Legacy partition layout: This partition layout allows a 4 GB partition for the Control Domain.What partition layout is your host using? It also includes practices that you can put in place to avoid the problem occurring in the future. This section includes steps to take to free up space right now. For more information about partition layouts, see. The causes of these problems and the steps to take can be different depending on the partition layout of your XenServer host. You must also free up space in cases where the Use% is less than 90% but you are getting error messages that state that you do not have enough space to complete the action you are attempting (for example, applying an update). ![]() If the value of the 'Use%' for the file system mounted on / is greater than 90%, your Control Domain file system is full and you must free up space. Xenstore 962M 0 962M 0% /var/lib/xenstored opt/xensource/packages/iso/XenCenter.iso To verify that a full file system is the cause of these symptoms, you can run the following command:Ĭommand output on a host with the legacy partition layout:įilesystem Size Used Avail Use% Mounted on Running VMs are no longer protected from host failure. ![]() HA monitor thread stops without warning.Host will disconnect from XenCenter and will not connect back.Any command or any process on the host takes too long to execute.Error while trying to update hotfixes: "No space left on the device".All the Consoles, for hosts or VM, become unresponsive. ![]() XenServer console will show error: "The XenAPI connection has timed out, the console will have reduced functionality".Performance of the VMs across the pool or host becomes sluggish."No space left on the device" error when attempting to apply hotfixes, cumulative updates, or current releases as an update to the XenServer host.Possible symptoms can include the following: The update precheck stage failed: the server does not have enough space.Log files or other non-essential (user created) files should be removed.XenServer's performance will be critically affected if this disk becomes full. Disk usage for the Control Domain on server 'XenServer' has reached 99.0%.Possible errors can include the following errors or alerts might appear in XenCenter: The errors and symptoms that you see might be different depending on the partition layout of your XenServer host. There are a variety of errors and symptoms that can be seen when the Control Domain file system becomes full.
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