• NON-EFI

# cat /etc/default/grub
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL="console serial"
GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"
GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=ol/root"
GRUB_CMDLINE_LINUX_DEFAULT="console=ttyS0,115200"
GRUB_DISABLE_RECOVERY="true"

# grub2-mkconfig -o /boot/grub2/grub.cfg

• EFI

# cat /etc/default/grub
GRUB_TIMEOUT=5
GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"
GRUB_DEFAULT=saved
GRUB_DISABLE_SUBMENU=true
GRUB_TERMINAL="console serial"
GRUB_SERIAL_COMMAND="serial --speed=115200 --unit=0 --word=8 --parity=no --stop=1"
GRUB_CMDLINE_LINUX="crashkernel=auto rd.lvm.lv=ol/root rd.lvm.lv=ol/swap"
GRUB_CMDLINE_LINUX_DEFAULT="console=ttyS0,115200"
GRUB_DISABLE_RECOVERY="true"

# for f in /boot/vm*; do grubby --info $f; done
# for f in /boot/vm*; do grubby --remove-args="rhgb quiet" --args="console=ttyS0,115200" --update-kernel=$f; done
# for f in /boot/vm*; do grubby --info $f; done
# grub2-mkconfig -o /boot/efi/EFI/*/grub.cfg

1. Install the package

   # dnf install iscsi-initiator-utils

2. Discover targets

   # iscsiadm -m discovery -t sendtargets -p SCSI_TARGET_SERVER

3. Display target information

   # iscsiadm -m discoverydb -t st -p SCSI_TARGET_SERVER

4. Establish a session

   # iscsiadm -m node -T iqn.XXX... -p SCSI_TARGET_SERVER:3260 -l

5. Verify session

   # iscsiadm -m session -P 3

6. When adding an iSCSI LUN to the fstab, use the _netdev option

   UUID=xxx... /MP ext4 _netdev 0 0

7. Log out of session

   # iscsiadm -m node -T iqn.XXX... -p SCSI_TARGET_SERVER:3260 --logout

8. Remove target from database

   # iscsiadm -m node -T iqn.XXX... -p SCSI_TARGET_SERVER:3260 -o delete

9. If target server has gone away, entries can be removed manually

   # rm -rf /var/lib/iscsi/nodes/TARGET