[CentOS] newbie question on installation over existing Linux

Tue Jun 9 15:51:41 UTC 2015
Kay Schenk <kay.schenk at gmail.com>

On 06/08/2015 06:29 PM, Peter wrote:
> On 06/09/2015 12:19 PM, John R Pierce wrote:
>> On 6/8/2015 5:08 PM, g wrote:
>>> ie, partition for boot, partition for swap, partition for /, partition
>>> home, partition for usr, partition for var, partition for home2,
>>> partition for what ever.
>> that model is not generally recommended anymore, at least not putting
>> /usr on its own partition, there's just too many issues with that
>> nowdays.   I don't like putting /var in its own partition either as its
>> all too intertwined with root.   the problem with lots of little
>> partitions is your freespace gets fragmented.
>> /home in a dedicated partition, sure.
>> /var/lib/${DATABASE_OR_WEB_SERVER}, ditto...
> The real issue is that you cannot put /usr on a dedicated partition
> anymore as of CentOS 7.  This is because /bin, /lib and /lib64 are
> symbolic linked in the /usr equivalents now.  The (previous) purposes of
> having a separate /bin and /lib was so that programs and libs required
> at boot time could be run before the rest of the fs was mounted up if
> /usr were on a separate partition.  Now they've been consolidated and
> symlinked so if you put /usr on a separate partition then the system
> won't be able to access critical apps during boot.
> You can thank Fedora for making that rather pointless change and
> breaking that capability.
> Peter

Just curious what happens in this case. Do the apps wait and/or retry
until /usr is mounted or does the boot fail?


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