IO scheduler during vertica 7 install failure

Joe_Mohacsi

During the install, we get:
These disks do not have known IO schedulers: '/dev/mapper/rootvg-varlv'
        ('') = '', '/dev/mapper/rootvg-usrlv' ('') = '', '/dev/mapper/rootvg-
        tmplv' ('') = '', '/dev/mapper/rootvg-optlv' ('') = '', '/dev/mapper
        /rootvg-homelv' ('') = ''

So we execute:
cat /sys/block/sdb/queue/scheduler
noop anticipatory [deadline] cfq

We also tried:
cat /sys/block/sdb2/queue/scheduler
noop anticipatory [deadline] cfq

Because from our /etc/fstab, this is our partition:
/dev/sdb2       /u01                    ext4    defaults         1 2

I believe this one won;t allow the install to continue.
What can be done to get beyond this problem?


These are the other issue:
    HINT (S0305): https://my.vertica.com/docs/7.0.x/HTML/index.htm#cshid=S0305
        TZ is unset for dradmin. Consider updating .profile or .bashrc
    HINT (S0041): https://my.vertica.com/docs/7.0.x/HTML/index.htm#cshid=S0041
        Could not find the following tools normally provided by the mcelog
        package: mcelog
    HINT (S0040): https://my.vertica.com/docs/7.0.x/HTML/index.htm#cshid=S0040
        Could not find the following tools normally provided by the pstack or
        gstack package: pstack/gstack
    WARN (S0170): https://my.vertica.com/docs/7.0.x/HTML/index.htm#cshid=S0170
        lvscan (LVM utility) indicates some active volumes.

How critical are these?

Bhawana

Hi,

By default Linux scheduler is set to cfq ("completely fair queuing"). Vertica recommends using deadline or noop.

To see how your system is set;

# cat /sys/block/sda/queue/scheduler
noop deadline [cfq]

The setting is the one enclosed in brackets []

Please send me the full error message on installation failing.


Regarding you second part of the questions, There is link to document is provided against each message. Request you to please got to that link for more information.


Regards

Bhawana