>> >> on http://comments.gmane.org/gmane.linux.redhat.fedora.devel/199113 >> >> *you* complain about systemd-readahead - guess what - if a virtual >> >> machine is detected it is skipped >> > >> > And why is it a good idea to skip it on a virtual machine? >> >> guess what happens if you fire up 20 guests at the same >> time prefetch a lot of data from a shared storage - if >> the data is not cached at the host you overload disks > > How is that different from if you have a room full of physical > machines using a single SAN?
It would depend on how many of those are boot from SAN or local storage for boot, in the case of boot from SAN they tend to also have dedicated LUNs where as in most cases VMs are on the same LUN. It can have similar issues but from experience there tends to be situations that mitigate the issue with physical machines. Peter -- devel mailing list devel@lists.fedoraproject.org https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
