Pulp

From Chris Roberts on bugzilla:

Its seems like after the machine reboot, pulp services and mongodb service were started before iscsi mounted /var/lib/pulp and /var/lib/mongodb directory. 

To overcome this issue we tried the below steps but :
================
edit following 3 files on your satellite 6 server.

/etc/systemd/system/multi-user.target.wants/pulp_celerybeat.service 
/etc/systemd/system/multi-user.target.wants/pulp_resource_manager.service 
/etc/systemd/system/multi-user.target.wants/pulp_workers.service 

and add prerequisite to mount /var/lib/pulp first, by adding into [Unit] section as shown below:
*****************************
[Unit]
RequireMountsFor=/var/lib/pulp
RequireMountsFor=/var/lib/mongodb
*****************************

Adding the dependency RequiresMountsFor to systemd services' files postpones pulp  and mongodb services start after the directories are already mounted.
==============

Also tried the below steps:
==============
In addition to 'RequireMountsFor=/var/lib/pulp' (use
Requires=var-lib-pulp.mount, which is pretty much the same thing), the
pulp services need to start after remote-fs.target as well.

- -- snip --
[Unit]
Description=Pulp's Celerybeat
After=network.target remote-fs.target
Requires=var-lib-pulp.mount
...
- -- snip --
================

However, the above steps did not helped.

Currently, system is using local partitions at the moment.

Here's the fstab:

#
# /etc/fstab
# Created by anaconda on Wed May 13 20:00:56 2015
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
/dev/mapper/vg_sys-root /                       xfs     defaults        1 1
UUID=048dad01-bb2a-4133-bc9a-36c6d877cf59 /boot   xfs    defaults        1 2
/dev/mapper/vg_sys-var     /var                    xfs     defaults        1 2
/dev/mapper/vg_sys-swap swap                    swap    defaults        0 0
#------------------------------------------------------------------------------
/dev/mapper/vg_ldisk-pgsql    /var/lib/pgsql    xfs    defaults    0 0
/dev/mapper/vg_ldisk-mongodb    /var/lib/mongodb xfs    defaults    0 0
/dev/mapper/vg_ldisk-pulp    /var/lib/pulp    xfs    defaults    0 0
#------------------------------------------------------------------------------
# Not using iSCSI partition for Satellite DBs because systemd allows them to
# start before networking and iscsid, which means they're not mounted and fail.
#/dev/mapper/vg_lun-pgsql    /mnt/pgsql    xfs    defaults    0 0
#/dev/mapper/vg_lun-mongodb    /mnt/mongodb    xfs    defaults    0 0
#/dev/mapper/vg_lun-pulp    /mnt/pulp    xfs    defaults    0 0
#------------------------------------------------------------------------------