Am 09.09.2014 um 13:51 schrieb Richard W.M. Jones: > On Tue, Sep 09, 2014 at 12:37:45PM +0200, Reindl Harald wrote: >> >> Am 09.09.2014 um 12:33 schrieb Paolo Bonzini: >>> Il 07/09/2014 20:04, Reindl Harald ha scritto: >>>> 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? then disable it there - so what you can't seriously blame a opportunity which is choosen as default for easy detectable cases because it does not magically recognize anything one could imagine how does that discussion lead to anything useful? * you don't like systemd-readahead? fine disable it * you don't like ConditionVirtualization? fine disable it and even if such conditions are not used in any single unit shipped with Fedora - there are a ton of options not used in shipped units - that don't change the fact i am *widely* use them while they all don't hurt you but they are there to give admins knowing the environemt a lot of useful *opportunities* you never had before without writing large and error prone initscripts cat /usr/lib/systemd/system/httpd.service | grep Directories | wc -l 85
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