[LU-6946] DNE2 upgrade test

• Type: Task
• Resolution: Fixed
• Priority: Minor
• Assignee: Di Wang
• Reporter: Di Wang

Description

Create the ticket for DNE2 upgrade test.

1.	Create a filesystem with single MDT with Lustre 2.5.
2.	Create a directory tree and populate it with 1M regular files
3.	Upgrade the filesystem to 2.7 + DNE async commit patches.
4.	Add 3 new MDTs to the filesystem.
5.	Create a striped directory with stripe_count = 4. lfs setdirstripe -c4 /mnt/lustre/striped_dir
6.	Create 1M files under the striped directory,
7.	Verify that both the original 1M files exist
8.	Verify that the new 1M files are approximately evenly distributed across all four MDTs.
9.	Unlink both sets of files.
10.	Unlink the striped directory.
11.	No errors will be observed.