== sanity test 54c: block device works in lustre =============================================================================== 00:05:03 (1763355903)
make a loop file system with /mnt/lustre/f54c.sanity on /mnt/lustre/loop54c (3).
1+0 records in
1+0 records out
4096 bytes (4.1 kB, 4.0 KiB) copied, 0.00422707 s, 969 kB/s
mke2fs 1.47.3-wc1 (8-Aug-2025)
Discarding device blocks: 4099/4100         done                            
Creating filesystem with 4100 1k blocks and 1024 inodes

Allocating group tables: 0/1   done                            
Writing inode tables: 0/1   done                            
Writing superblocks and filesystem accounting information: 0/1   done

striped dir -i0 -c2 -H crush /mnt/lustre/d54c.sanity
30+0 records in
30+0 records out
122880 bytes (123 kB, 120 KiB) copied, 0.00268259 s, 45.8 MB/s
Filesystem          1K-blocks  Used Available Use% Mounted on
/mnt/lustre/loop54c      3823   135      3483   4% /mnt/lustre/d54c.sanity
30+0 records in
30+0 records out
122880 bytes (123 kB, 120 KiB) copied, 0.000261055 s, 471 MB/s
losetup: /mnt/lustre/loop54c: detach failed: No such device or address
losetup: /dev/loop3: detach failed: No such device or address