We have been running into an issue with our CentOS file-level virtual machine backups.
First I'll explain our environment and then the problem at hand.
NetBackup Version: 7.6.0.2
Master Server: SLES 11.3
Two media servers: Both CentOS 6.5
Two NetBackup 5230 Appliances.
Guest OS affected: We've seen this in several varieties of CentOS but specifically 6.5 is our main concern now.
File system format: ext4
In our VMWare policies we check the option to "Enable File Recovey from VM backup" on the VMWare tab and this causes backups for our CentOS machines to sit there and hang for around 15-45 minutes and timeout with a status 40 network connection broken. We've seen the amount of time attributed to the client read timeout on the particular appliance that this tries to back up on.
After working a case with support it appeared the solution was to have the SYMCQuiesce tool installed on all guests. This happened to be true for the single guest we tested with but on subsequent tests with different guests we are not having any success with file-level backups. Even with the SYMCQuiesce tool installed we aren't having successful backups with the Enable File Recovery option checked.
I'm looking for information to see what others are doing, if anything to remedy this issue. We have hundres of CentOS guests and we are currently doing full backups on these every night.
I can provide any further detail that is necessary.
Thank you.