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You can also use e2label on md0 (RAID on first partitions) to add label on filesystem and make booting process independendent from /dev/md* names.


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Quick short answer more to encourage research but give you the idea: exclude.txt /boot /proc /sys /tmp /dev /var/lock /etc/fstab /etc/mdadm.conf /etc/mtab /etc/resolv.conf /etc/conf.d/net /etc/network/interfaces /etc/networks /etc/sysconfig/network* /etc/sysconfig/hwconf /etc/sysconfig/ip6tables-config /etc/sysconfig/kernel /etc/hostname /etc/HOSTNAME ...


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It's possible that the disks being read from to calculate the "resync" data are encountering some bad blocks during the process. Since you're using RAID50, if you encounter ANY bad blocks from any drive in the "half" (RAID5) that is rebuilding, it automatically results in a URE (referred to by Dell as a "puncture"). I say I suspect this because you're ...


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Every template in XenServer has a "hint" about max number of VIFs. This only restricts XenCenter GUI, and you can easily add more NICs from command line. See xe help vif-create. You can also change a template. Templates are internally tar files, so they can be accessed easily. Look for allowed-VIF-devices parameter in XML file.


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Dom0 is only using a couple of CPU cores (xen management VM). You can verify all existing CPUs via Citrix XenCenter (navigate to the host, then click tap General -> CPUs). More CPU information is available via "xe host-cpu-list params=all".



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