Add description of rootfs_disk field in job.yaml.

Signed-off-by: Yu Chuan 13186087857@163.com --- doc/job/rootfs_disk.md | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 doc/job/rootfs_disk.md

diff --git a/doc/job/rootfs_disk.md b/doc/job/rootfs_disk.md new file mode 100644 index 000000000000..72762cf72f2f --- /dev/null +++ b/doc/job/rootfs_disk.md @@ -0,0 +1,27 @@ +# Summary +========= + +`rootfs_disk` defines a disk which storing multiple rootfs, used for jobs which need boot from disk. + +Each of these rootfs corresponds to an logical volume, such as follow: + /dev/mapper/ + . + ├── os-openeuler_aarch64_20.03 + ├── os-openeuler_aarch64_20.03_{timestamp} + ├── os-openeuler_aarch64_20.03_sp1 + ├── os-openeuler_aarch64_20.03_sp1_{timestamp} + └── ... + +Addition: +1. `/dev/mapper/os-{os}_{os_arch}_{os_version}_{timestamp}` + - is a readonly logical volume + - used for backup and rollback + +2. `/dev/mapper/os-{os}_{os_arch}_{os_version}` + - is a read write logical volume + - use for boot and run job + - defaultly, this logical volume will be wiped before every job run + +3. every logical volume size: 10G + +4. more info can refer os_mount.md