== sanity-lfsck test 20a: Handle the orphan with dummy LOV EA slot properly ========================================================== 05:11:30 (1713345090)
#####
The target MDT-object and some of its OST-object are lost.
The LFSCK should find out the left OST-objects and re-create
the MDT-object under the direcotry .lustre/lost+found/MDTxxxx/
with the partial OST-objects (LOV EA hole).
New client can access the file with LOV EA hole via normal
system tools or commands without crash the system.
For old client, even though it cannot access the file with
LOV EA hole, it should not cause the system crash.
#####
257+0 records in
257+0 records out
1052672 bytes (1.1 MB) copied, 0.0449445 s, 23.4 MB/s
257+0 records in
257+0 records out
1052672 bytes (1.1 MB) copied, 0.0438647 s, 24.0 MB/s
257+0 records in
257+0 records out
1052672 bytes (1.1 MB) copied, 0.0415538 s, 25.3 MB/s
[0x200004a51:0x1c:0x0]
/mnt/lustre/d20a.sanity-lfsck/a1/f0
lmm_stripe_count:  2
lmm_stripe_size:   1048576
lmm_pattern:       raid0
lmm_layout_gen:    0
lmm_stripe_offset: 0
	obdidx		 objid		 objid		 group
	     0	          3309	        0xced	   0x240000400
	     1	          2854	        0xb26	   0x280000400

[0x200004a51:0x1d:0x0]
/mnt/lustre/d20a.sanity-lfsck/a1/f1
lmm_stripe_count:  2
lmm_stripe_size:   1048576
lmm_pattern:       raid0
lmm_layout_gen:    0
lmm_stripe_offset: 0
	obdidx		 objid		 objid		 group
	     0	          3310	        0xcee	   0x240000400
	     1	          2855	        0xb27	   0x280000400

[0x200004a51:0x1e:0x0]
/mnt/lustre/d20a.sanity-lfsck/a1/f2
lmm_stripe_count:  2
lmm_stripe_size:   1048576
lmm_pattern:       raid0
lmm_layout_gen:    0
lmm_stripe_offset: 0
	obdidx		 objid		 objid		 group
	     0	          3311	        0xcef	   0x240000400
	     1	          2856	        0xb28	   0x280000400

Inject failure...
To simulate f0 lost MDT-object
fail_loc=0x1616
To simulate f1 lost MDT-object and OST-object0
fail_loc=0x161a
To simulate f2 lost MDT-object and OST-object1
fail_val=1
192.168.202.104@tcp:/lustre /mnt/lustre lustre rw,checksum,flock,user_xattr,lruresize,lazystatfs,nouser_fid2path,verbose,noencrypt,statfs_project 0 0
Stopping client oleg204-client.virtnet /mnt/lustre (opts:)
fail_loc=0
fail_val=0
Trigger layout LFSCK on all devices to find out orphan OST-object
Started LFSCK on the device lustre-MDT0000: scrub layout
Starting client: oleg204-client.virtnet:  -o user_xattr,flock oleg204-server@tcp:/lustre /mnt/lustre
Check /mnt/lustre/.lustre/lost+found/MDT0000/[0x200004a51:0x1c:0x0]-R-0, which is the old f0
/mnt/lustre/.lustre/lost+found/MDT0000/[0x200004a51:0x1c:0x0]-R-0
lmm_magic:         0x0BD10BD0
lmm_seq:           0x200004a51
lmm_object_id:     0x1c
lmm_fid:           [0x200004a51:0x1c:0x0]
lmm_stripe_count:  2
lmm_stripe_size:   1048576
lmm_pattern:       raid0
lmm_layout_gen:    2
lmm_stripe_offset: 0
	obdidx		 objid		 objid		 group
	     0	          3309	        0xced	   0x240000400
	     1	          2854	        0xb26	   0x280000400

Check /mnt/lustre/.lustre/lost+found/MDT0000/[0x200004a51:0x1d:0x0]-R-0, it contains the old f1's stripe1
/mnt/lustre/.lustre/lost+found/MDT0000/[0x200004a51:0x1d:0x0]-R-0
lmm_magic:         0x0BD10BD0
lmm_seq:           0x200004a51
lmm_object_id:     0x1d
lmm_fid:           [0x200004a51:0x1d:0x0]
lmm_stripe_count:  2
lmm_stripe_size:   1048576
lmm_pattern:       40000001
lmm_layout_gen:    1
lmm_stripe_offset: 0
	obdidx		 objid		 objid		 group
	     0	             0	            0	             0
	     1	          2855	        0xb27	   0x280000400

cat: /mnt/lustre/.lustre/lost+found/MDT0000/[0x200004a51:0x1d:0x0]-R-0: Input/output error
dd: error writing '/mnt/lustre/.lustre/lost+found/MDT0000/[0x200004a51:0x1d:0x0]-R-0': Input/output error
1+0 records in
0+0 records out
0 bytes (0 B) copied, 0.000443476 s, 0.0 kB/s
1+0 records in
1+0 records out
4096 bytes (4.1 kB) copied, 0.0194615 s, 210 kB/s
/home/green/git/lustre-release/lustre/tests/sanity-lfsck.sh: line 3371: echo: write error: Input/output error
Check /mnt/lustre/.lustre/lost+found/MDT0000/[0x200004a51:0x1e:0x0]-R-0, it contains the old f2's stripe0
/mnt/lustre/.lustre/lost+found/MDT0000/[0x200004a51:0x1e:0x0]-R-0
lmm_magic:         0x0BD10BD0
lmm_seq:           0x200004a51
lmm_object_id:     0x1e
lmm_fid:           [0x200004a51:0x1e:0x0]
lmm_stripe_count:  2
lmm_stripe_size:   1048576
lmm_pattern:       40000001
lmm_layout_gen:    1
lmm_stripe_offset: 0
	obdidx		 objid		 objid		 group
	     0	          3311	        0xcef	   0x240000400
	     0	             0	            0	             0

cat: /mnt/lustre/.lustre/lost+found/MDT0000/[0x200004a51:0x1e:0x0]-R-0: Input/output error
dd: error writing '/mnt/lustre/.lustre/lost+found/MDT0000/[0x200004a51:0x1e:0x0]-R-0': Input/output error
1+0 records in
0+0 records out
0 bytes (0 B) copied, 0.000520904 s, 0.0 kB/s