...

+++ b/doc/job/os_mount.md @@ -0,0 +1,94 @@ +# Summary +=========

+`os_mount` defines the mount method of testbox's root partition.

.. defines the rootfs type.

ok.

...

+It has the following optional values:

It can be one of the below values:

or

The below types are supported:

ok.

...

• • nfs
• • cifs
• • initramfs
• • container
• • local

...

+Usage example:

• • submit iperf.yaml testbox=vm-2p8g os_mount=nfs
• • submit iperf.yaml testbox=vm-2p8g os_mount=cifs
• • submit iperf.yaml testbox=vm-2p8g os_mount=initramfs
• • submit iperf.yaml testbox=dc-8g os_mount=container
• • submit iperf.yaml testbox=vm-2p8g os_mount=local

The above are not real/complete examples.

Please give cmdline examples than can be copy/pasted by end user and can just run.

Better use -m -c borrow-1h.yaml, which can be more approachable for new users.

ok.

In case of container, the os_mount value may be auto filled?

I'll investigate this later.

...

+# Optional Values +=================

+## Work flow when os_mount=local

=>

os_mount=local

Please first describe it in end user POV.

Then continue to explain work flow and design.

ok.

-------- Thanks Yu Chuan

Thanks, Fengguang

...

+1. user submit job with os_mount: local

• • optional {kernel_append_root}:
• • save_root_partition: give an iconic string, then the root partition data used by this job will be retained.

•                       and you can use the root partition data of this job in the futher job by {use_root_partition}.
  

• • use_root_partition : give an iconic string, then the root partition data generated by the

•                       pervious job which has the {save_root_partition} field will be used.
  

• • root_partition_size: specify the size of root partition, *default is 10G*.
• • tips:

•  - value of {save_root_partition} and {use_root_partition} need to be iconic enough, uuid is recommended.
  

•  - value of {save_root_partition} and {use_root_partition} will be the suffix of logical volume.
  

+2. scheduler return the ipxe_str to testbox

• dhcp
• initrd http://$%7Bhttp_server_ip%7D:$%7Bhttp_server_port%7D/os/openeuler/aarch64/20...
• initrd http://$%7Bhttp_server_ip%7D:$%7Bhttp_server_port%7D/os/openeuler/aarch64/20...
• imgargs vmlinux root=/dev/mapper/os-openeuler_aarch64_20.03 rootfs_src={nfs_server_ip}:os/openeuler/aarch64/20.03-iso-snapshots/{timestamp} initrd=initrd.lkp {kernel_append_root}
• boot

+3. dracut step of boot

• if have {use_root_partition}; then
• base_lv_name=openeuler_aarch64_20.03_{value_of_use_root_partition}
• lvdisplay /dev/mappaer/os-{base_lv_name} > /dev/null || exit 1
• if have {save_root_partition}; then

• boot_lv_name=openeuler_aarch64_20.03_{value_of_save_root_partition}
  

• if {save_root_partition} == {use_root_partition}; then
  

• 	boot from /dev/mappaer/os-{boot_lv_name}
  

• fi
  

• lvremove -f /dev/mappaer/os-{boot_lv_name}
  

• lvcreate /dev/mappaer/os-{boot_lv_name} from /dev/mappaer/os-{base_lv_name} || exit 1
  

• boot from /dev/mappaer/os-{boot_lv_name}
  

• else

• boot_lv_name=openeuler_aarch64_20.03_{value_of_use_root_partition}
  

• boot from /dev/mappaer/os-{boot_lv_name}
  

• fi
• else:
• base_lv_name=openeuler_aarch64_20.03_{timestamp}
• lvdisplay /dev/mappaer/os-{base_lv_name} > /dev/null || {

• # create logical volume
  

• lvcreate -L {root_partition_size} -n {base_lv_name} os || exit 1
  

• # rsync nfsroot to lvm:/dev/mapper/os-{base_lv_name}
  

• mount -t nfs {nfs_server_ip}:os/openeuler/aarch64/20.03-iso-snapshots/{timestamp} /mnt
  

• mkdir /mnt1 && mount /dev/mapper/os-{base_lv_name} /mnt1
  

• cp -a /mnt/. /mnt1/
  

• umount /mnt /mnt1
  

• # change premission of lvm:/dev/mapper/os-{base_lv_name} to readonly
  

• lvchange -p r /dev/mapper/os-{base_lv_name}
  

• }
• boot_lv_name=openeuler_aarch64_20.03
• if have {save_root_partition}; then

• boot_lv_name=openeuler_aarch64_20.03_{value_of_save_root_partition}
  

• fi
• lvremove -f /dev/mappaer/os-{boot_lv_name}
• lvcreate /dev/mappaer/os-{boot_lv_name} from /dev/mappaer/os-{base_lv_name} || exit 1
• boot from /dev/mappaer/os-{boot_lv_name}
• fi

+4. execute the job

2.23.0