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Troubleshooting PSOD

Purple Screen of Death or commonly known as  PSOD  is something which we see most of the times on ESXi host. Usually when we experience PSOD, we take the screenshot of PSOD and reboot the host and then capture the logs and upload it to VMware support for analysis. Let’s analyze the dumps by yourself? Step 1:  Sometimes, we might miss out on the screenshot of PSOD. Well that's alright! If we have core-dump configured for the ESXi, we can extract the dump files to gather the crash logs. Once the host is back up from accident reboot post PSOD, login to the SSH/Putty of the host and go to the core directory. The core directory is the location where your PSOD logging go to. The most important one is the “Core” folder which contains the kernel dump, the PSOD will purge what was in memory to a file called vmkernel-zdump.1 or something to that affect and place it in that directory. So go to # cd var/core  Then list out the files here using ls –ltr . ...
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Avamar & Netbackup Backup Troubleshooting Steps

AVAMAR Backup Failure Troubleshooting Steps 1)       Login to server 2)       Check the system Tray Icon for Avamar Agent 3)       If the check mark shows green Avamar client is communicating with backup Server (Follow the below troubleshooting Steps mentioned at the end of this document to fix the issue) 4)       If the Check Mark Shows Red It means the client is communicating the server but the last backup was Failed (Follow the below troubleshooting Steps mentioned at the end of this document to fix the issue) 5)       If the Check Mark Is Orange it means the Client is not communicating with backup server(Follow the below Steps and later Follow the below troubleshooting Steps mentioned at the end of this document to fix the issue) i)                  ...
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Real Time Isuue " Create virtual machine snapshot " Error : An error occurred while saving the snapshot : Change tracking target file already exists. Resolution :  1.Connect to the ESXi host that the virtual machine is running on using SSH. 2.Navigate to the virtual machine folder using this command.   cd /vmfs/volumes/datastore/virtual_machine/ 3.List the contents of the directory using the ls command and look for .ctk files. Create a temporary directory for the ctk files For example: mkdir temp Move the CBT files to this directory with this command: mv *-ctk.vmdk temp/ 4.Run the snapshot consolidation again.
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