[LU-12361] cp --sparse doesn't work correctly in

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.13.0, Lustre 2.12.3
• Severity: 3
• Assignee: Wang Shilong (Inactive)
• Reporter: Wang Shilong (Inactive)

Description

When running copy a sparse file, it caused file different:

+ rm -f k
+ dd bs=1k seek=128 of=k
0+0 records in
0+0 records out
0 bytes (0 B) copied, 0.000324957 s, 0.0 kB/s
+ ls -l k
-rw-r--r-- 1 root root 131072 May 30 17:17 k
+ du -sb k
131072 k
+ printf y
+ ls -l k
-rw-r--r-- 1 root root 131073 May 30 17:17 k
+ du -sb k
131073 k
+ cp --sparse=always k k2
+ ls -l k2
-rw-r--r-- 1 ddn01 ddn 131073 May 30 17:17 k2
+ du -sb k2
131073 k2
+ echo 0
0
+ cmp k k2
k k2 differ: char 131073, line 1
+ echo 1
1
+ diff k k2
Binary files k and k2 differ
+ echo 2
2