Citrix XenServer multiple vulnerabilities (CTX222565)

The version of Citrix XenServer installed on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities : - A flaw exists when invoking the instruction emulator that is triggered during the handling of SYSCALL by single-stepping applications. A local...

How to Remove Crash Dump File From a Crashed Red Marked Xenserver.

Remove Crash Dump File From a Crashed Xenserver...

Helpful SR CLI commands

Probe the SR: xe sr-probe type=lvmohba device-config:device=/dev/disk/by-id/scsi- xe sr-probe type=lvmoiscsi device-config:target= device-config:targetIQN= xe sr-probe type=nfs device-config:server= device-config:serverpath=/path/to/export Introduce the existing SR to XenServer: xe sr-introduce...

Citrix XenServer QEMU Display Geometry Resize Handling Guest-to-Host Code Execution (CTX221578)

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by a guest-to-host arbitrary code execution vulnerability in the QEMU component due to a failure to immediately complete resize operations when a blank mode is synchronously selecte...

Install XenServer tools silently

To silently install the XenServer Tools and to prevent the system from rebooting...

Create non-persistent vm on XenServer

You can create a non-persistent XenServer VM by setting the VDI param to on-boot=reset VM will reset to original state after each reboot...

XenServer- Server are in maintenance mode

XenServer are not able to connect to XenCenter...

Citrix XenServer Security Update for CVE-2016-9603 (CTX221578)

A security issue has been identified within Citrix XenServer. SPDX-FileCopyrightText: 2017 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE = "cpe:/a:citrix:xenserver"; ...

CVE-2016-9603 - Citrix XenServer Security Update

Description of Problem A security issue has been identified within Citrix XenServer. This issue could, if exploited, allow the administrator of an HVM guest VM to compromise the host. The following vulnerability has been addressed: CVE-2016-9603 High: QEMU: Cirrus VGA Heap overflow via display...

How to Enable HA Using XenServer CLI

This article describes how to enable HA using XenServer CLI. HA can be enabled on a pool using either XenCenter or the command-line interface. In either case, you will specify a set of priorities that determine which VMs should be given highest restart priority when a pool is over committed...

how to fix stale CIFS mounts on XenServer

how to fix stale CIFS mounts on XenServer...

How to change control domain memory using XenCenter in XenServer 7.1 and higher?

This article describes the method to change the amount of memory allocated to the Control Domain using XenCenter...

PVS 7.13: XenServer PVS-Accelerator Cache Storage Considerations

Note: This feature is only available in XenServer 7.1 and PVS 7.13 or later. PVS-Accelerator provides two cache modes: Memory only , in the Control Domain Dom0 Memory. When selecting Memory only, the feature will use up to the specified cache size in the Dom0 memory. This option is only available...

PVS 7.13: XenServer PVS-Accelerator Introduction and Requirements

Note : This feature is only available in XenServer 7.1 and PVS 7.13 or later. XenServer PVS-Accelerator feature offers additional capabilities for customers using XenServer and Citrix Provisioning Services PVS. With this feature, the read requests from a PVS target device can now be cached on eac...

PVS Accelerator: How to Check PVS-Accelerator Cache Status?

This article describes the method to check and monitor XenServer PVS-Accelerator status...

Citrix XenServer Multiple Vulnerabilities (CTX220771)

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by the following vulnerabilities : - A flaw exists in the blitregionisunsafe function within file hw/display/cirrusvga.c when handling a backward mode bitblt copy. A guest attacker...

How to Generate a Crashdump from an Unresponsive XenServer 7

This article describes how to generate a crashdump from an unresponsive XenServer 7. If XenServer crashes, the running kernel can migrate into a special memory area which is based on kexec functions that loads a special kernel without the need for a server cold restart. This new kernel attempts t...

XAPI Keeps Maintenance Mode For A Long Time After Restarting XenServer

XAPI keeps maintenance mode long time after restarting XenServer every time. This issue is happening from XenServer env was configured first. XAPI can't create network connection to other pool member and xenbr0 raise a network error. Sep 10 19:36:08 XXXX fe: 5481 /sbin/ip addr add...

Citrix XenServer Multiple Security Updates (CTX220771)

Two security issues have been identified within Citrix XenServer. SPDX-FileCopyrightText: 2017 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE =...

XenServer 7 Host Crash while starting multiple Virtual Machine

XenServer 7 Hosts crashes with below call traces while trying to start multiple vGPU attached Virtual Machines. The following trace can be found in xen.log in the crash folder /var/log/crash: XEN 101632.198343 ---- Xen-4.6.1-xs128153 x8664 debug=n Not tainted ----XEN 101632.198344 CPU: 5XEN...