[ceph.git] / ceph / qa / rbd / krbd_zeroout.t


  $ rbd create --size 4M img
  $ DEV=$(sudo rbd map img)

Zero, < 1 block:

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 156672 -l 512 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0026400 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0026600 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 131584 -l 64512 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0020200 0000 0000 0000 0000 0000 0000 0000 0000
  *
  002fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 131584 -l 65024 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0020200 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 131072 -l 65024 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0020000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  002fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

Zero, 1 block:

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 131072 -l 65536 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0020000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 131072 -l 66048 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0020000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0030200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 130560 -l 66048 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  001fe00 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 130560 -l 66560 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  001fe00 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0030200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

Zero, < 2 blocks:

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 163840 -l 65536 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0028000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0038000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 131584 -l 130048 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0020200 0000 0000 0000 0000 0000 0000 0000 0000
  *
  003fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 131584 -l 130560 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0020200 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 131072 -l 130560 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0020000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  003fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

Zero, 2 blocks:

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 131072 -l 131072 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0020000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 131072 -l 131584 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0020000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0040200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 130560 -l 131584 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  001fe00 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 130560 -l 132096 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  001fe00 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0040200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

Zero, 37 blocks:

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 589824 -l 2424832 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0090000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  02e0000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 589312 -l 2424832 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  008fe00 0000 0000 0000 0000 0000 0000 0000 0000
  *
  02dfe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 590336 -l 2424832 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0090200 0000 0000 0000 0000 0000 0000 0000 0000
  *
  02e0200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

Truncate:

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 4193792 -l 512 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  03ffe00 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 4129280 -l 65024 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  03f0200 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 4128768 -l 65536 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  03f0000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 4128256 -l 66048 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  03efe00 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 4063744 -l 130560 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  03e0200 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 4063232 -l 131072 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  03e0000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 4062720 -l 131584 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  03dfe00 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 512 -l 4193792 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0000200 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0400000

Delete:

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 0 -l 4194304 $DEV
  $ hexdump $DEV
  0000000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0400000

Empty clone:

  $ xfs_io -c 'pwrite -S 0xab -w 0 4M' $DEV >/dev/null
  $ sudo rbd unmap $DEV
  $ rbd snap create --no-progress img@snap
  $ rbd snap protect img@snap

  $ rbd clone img@snap cloneimg1
  $ DEV=$(sudo rbd map cloneimg1)
  $ fallocate -z -o 720896 -l 2719744 $DEV
  $ hexdump $DEV
  0000000 abab abab abab abab abab abab abab abab
  *
  00b0000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0348000 abab abab abab abab abab abab abab abab
  *
  0400000
  $ sudo rbd unmap $DEV

  $ rbd clone img@snap cloneimg2
  $ DEV=$(sudo rbd map cloneimg2)
  $ fallocate -z -o 1474560 -l 2719744 $DEV
  $ hexdump $DEV
  0000000 abab abab abab abab abab abab abab abab
  *
  0168000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0400000
  $ sudo rbd unmap $DEV

  $ rbd clone img@snap cloneimg3
  $ DEV=$(sudo rbd map cloneimg3)
  $ fallocate -z -o 0 -l 4194304 $DEV
  $ hexdump $DEV
  0000000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0400000
  $ sudo rbd unmap $DEV

Full clone:

  $ rbd clone img@snap cloneimg4
  $ DEV=$(sudo rbd map cloneimg4)

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 720896 -l 2719744 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  00b0000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0348000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 1474560 -l 2719744 $DEV
  $ hexdump $DEV
  0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  0168000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0400000

  $ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
  $ fallocate -z -o 0 -l 4194304 $DEV
  $ hexdump $DEV
  0000000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0400000

  $ sudo rbd unmap $DEV

Multiple object requests:

  $ rbd create --size 50M --stripe-unit 16K --stripe-count 5 fancyimg
  $ DEV=$(sudo rbd map fancyimg)

  $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
  $ fallocate -z -o 0 -l 143360 $DEV
  $ hexdump $DEV
  0000000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0023000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  3200000

  $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
  $ fallocate -z -o 0 -l 286720 $DEV
  $ hexdump $DEV
  0000000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  0046000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  3200000

  $ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
  $ fallocate -z -o 0 -l 573440 $DEV
  $ hexdump $DEV
  0000000 0000 0000 0000 0000 0000 0000 0000 0000
  *
  008c000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
  *
  3200000

  $ sudo rbd unmap $DEV

  $ rbd rm --no-progress fancyimg
  $ rbd rm --no-progress cloneimg4
  $ rbd rm --no-progress cloneimg3
  $ rbd rm --no-progress cloneimg2
  $ rbd rm --no-progress cloneimg1
  $ rbd snap unprotect img@snap
  $ rbd snap rm --no-progress img@snap
  $ rbd rm --no-progress img
Commit	Line	Data
11fdf7f2 TL	1
	2	$ rbd create --size 4M img
	3	$ DEV=$(sudo rbd map img)
	4
	5	Zero, < 1 block:
	6
	7	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
	8	$ fallocate -z -o 156672 -l 512 $DEV
	9	$ hexdump $DEV
	10	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
	11	*
	12	0026400 0000 0000 0000 0000 0000 0000 0000 0000
	13	*
	14	0026600 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
	15	*
	16	0400000
	17
	18	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
	19	$ fallocate -z -o 131584 -l 64512 $DEV
	20	$ hexdump $DEV
	21	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
	22	*
	23	0020200 0000 0000 0000 0000 0000 0000 0000 0000
	24	*
	25	002fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
	26	*
	27	0400000
	28
	29	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
	30	$ fallocate -z -o 131584 -l 65024 $DEV
	31	$ hexdump $DEV
	32	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
	33	*
	34	0020200 0000 0000 0000 0000 0000 0000 0000 0000
	35	*
	36	0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
	37	*
	38	0400000
	39
	40	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
	41	$ fallocate -z -o 131072 -l 65024 $DEV
	42	$ hexdump $DEV
	43	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
	44	*
	45	0020000 0000 0000 0000 0000 0000 0000 0000 0000
	46	*
	47	002fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
	48	*
	49	0400000
	50
	51	Zero, 1 block:
	52
	53	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
	54	$ fallocate -z -o 131072 -l 65536 $DEV
	55	$ hexdump $DEV
	56	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
	57	*
	58	0020000 0000 0000 0000 0000 0000 0000 0000 0000
	59	*
	60	0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
	61	*
	62	0400000
	63
	64	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
65	$ fallocate -z -o 131072 -l 66048 $DEV
66	$ hexdump $DEV
67	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
68	*
69	0020000 0000 0000 0000 0000 0000 0000 0000 0000
70	*
71	0030200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
72	*
73	0400000
74
75	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
76	$ fallocate -z -o 130560 -l 66048 $DEV
77	$ hexdump $DEV
78	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
79	*
80	001fe00 0000 0000 0000 0000 0000 0000 0000 0000
81	*
82	0030000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
83	*
84	0400000
85
86	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
87	$ fallocate -z -o 130560 -l 66560 $DEV
88	$ hexdump $DEV
89	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
90	*
91	001fe00 0000 0000 0000 0000 0000 0000 0000 0000
92	*
93	0030200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
94	*
95	0400000
96
97	Zero, < 2 blocks:
98
99	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
100	$ fallocate -z -o 163840 -l 65536 $DEV
101	$ hexdump $DEV
102	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
103	*
104	0028000 0000 0000 0000 0000 0000 0000 0000 0000
105	*
106	0038000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
107	*
108	0400000
109
110	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
111	$ fallocate -z -o 131584 -l 130048 $DEV
112	$ hexdump $DEV
113	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
114	*
115	0020200 0000 0000 0000 0000 0000 0000 0000 0000
116	*
117	003fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
118	*
119	0400000
120
121	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
122	$ fallocate -z -o 131584 -l 130560 $DEV
123	$ hexdump $DEV
124	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
125	*
126	0020200 0000 0000 0000 0000 0000 0000 0000 0000
127	*
128	0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
129	*
130	0400000
131
132	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
133	$ fallocate -z -o 131072 -l 130560 $DEV
134	$ hexdump $DEV
135	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
136	*
137	0020000 0000 0000 0000 0000 0000 0000 0000 0000
138	*
139	003fe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
140	*
141	0400000
142
143	Zero, 2 blocks:
144
145	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
146	$ fallocate -z -o 131072 -l 131072 $DEV
147	$ hexdump $DEV
148	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
149	*
150	0020000 0000 0000 0000 0000 0000 0000 0000 0000
151	*
152	0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
153	*
154	0400000
155
156	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
157	$ fallocate -z -o 131072 -l 131584 $DEV
158	$ hexdump $DEV
159	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
160	*
161	0020000 0000 0000 0000 0000 0000 0000 0000 0000
162	*
163	0040200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
164	*
165	0400000
166
167	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
168	$ fallocate -z -o 130560 -l 131584 $DEV
169	$ hexdump $DEV
170	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
171	*
172	001fe00 0000 0000 0000 0000 0000 0000 0000 0000
173	*
174	0040000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
175	*
176	0400000
177
178	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
179	$ fallocate -z -o 130560 -l 132096 $DEV
180	$ hexdump $DEV
181	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
182	*
183	001fe00 0000 0000 0000 0000 0000 0000 0000 0000
184	*
185	0040200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
186	*
187	0400000
188
189	Zero, 37 blocks:
190
191	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
192	$ fallocate -z -o 589824 -l 2424832 $DEV
193	$ hexdump $DEV
194	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
195	*
196	0090000 0000 0000 0000 0000 0000 0000 0000 0000
197	*
198	02e0000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
199	*
200	0400000
201
202	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
203	$ fallocate -z -o 589312 -l 2424832 $DEV
204	$ hexdump $DEV
205	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
206	*
207	008fe00 0000 0000 0000 0000 0000 0000 0000 0000
208	*
209	02dfe00 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
210	*
211	0400000
212
213	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
214	$ fallocate -z -o 590336 -l 2424832 $DEV
215	$ hexdump $DEV
216	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
217	*
218	0090200 0000 0000 0000 0000 0000 0000 0000 0000
219	*
220	02e0200 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
221	*
222	0400000
223
224	Truncate:
225
226	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
227	$ fallocate -z -o 4193792 -l 512 $DEV
228	$ hexdump $DEV
229	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
230	*
231	03ffe00 0000 0000 0000 0000 0000 0000 0000 0000
232	*
233	0400000
234
235	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
236	$ fallocate -z -o 4129280 -l 65024 $DEV
237	$ hexdump $DEV
238	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
239	*
240	03f0200 0000 0000 0000 0000 0000 0000 0000 0000
241	*
242	0400000
243
244	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
245	$ fallocate -z -o 4128768 -l 65536 $DEV
246	$ hexdump $DEV
247	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
248	*
249	03f0000 0000 0000 0000 0000 0000 0000 0000 0000
250	*
251	0400000
252
253	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
254	$ fallocate -z -o 4128256 -l 66048 $DEV
255	$ hexdump $DEV
256	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
257	*
258	03efe00 0000 0000 0000 0000 0000 0000 0000 0000
259	*
260	0400000
261
262	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
263	$ fallocate -z -o 4063744 -l 130560 $DEV
264	$ hexdump $DEV
265	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
266	*
267	03e0200 0000 0000 0000 0000 0000 0000 0000 0000
268	*
269	0400000
270
271	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
272	$ fallocate -z -o 4063232 -l 131072 $DEV
273	$ hexdump $DEV
274	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
275	*
276	03e0000 0000 0000 0000 0000 0000 0000 0000 0000
277	*
278	0400000
279
280	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
281	$ fallocate -z -o 4062720 -l 131584 $DEV
282	$ hexdump $DEV
283	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
284	*
285	03dfe00 0000 0000 0000 0000 0000 0000 0000 0000
286	*
287	0400000
288
289	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
290	$ fallocate -z -o 512 -l 4193792 $DEV
291	$ hexdump $DEV
292	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
293	*
294	0000200 0000 0000 0000 0000 0000 0000 0000 0000
295	*
296	0400000
297
298	Delete:
299
300	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
301	$ fallocate -z -o 0 -l 4194304 $DEV
302	$ hexdump $DEV
303	0000000 0000 0000 0000 0000 0000 0000 0000 0000
304	*
305	0400000
306
307	Empty clone:
308
309	$ xfs_io -c 'pwrite -S 0xab -w 0 4M' $DEV >/dev/null
310	$ sudo rbd unmap $DEV
f67539c2	311	$ rbd snap create --no-progress img@snap
11fdf7f2 TL	312	$ rbd snap protect img@snap
	313
	314	$ rbd clone img@snap cloneimg1
	315	$ DEV=$(sudo rbd map cloneimg1)
	316	$ fallocate -z -o 720896 -l 2719744 $DEV
	317	$ hexdump $DEV
	318	0000000 abab abab abab abab abab abab abab abab
	319	*
	320	00b0000 0000 0000 0000 0000 0000 0000 0000 0000
	321	*
	322	0348000 abab abab abab abab abab abab abab abab
	323	*
	324	0400000
	325	$ sudo rbd unmap $DEV
	326
	327	$ rbd clone img@snap cloneimg2
	328	$ DEV=$(sudo rbd map cloneimg2)
	329	$ fallocate -z -o 1474560 -l 2719744 $DEV
	330	$ hexdump $DEV
	331	0000000 abab abab abab abab abab abab abab abab
	332	*
	333	0168000 0000 0000 0000 0000 0000 0000 0000 0000
	334	*
	335	0400000
	336	$ sudo rbd unmap $DEV
	337
	338	$ rbd clone img@snap cloneimg3
	339	$ DEV=$(sudo rbd map cloneimg3)
	340	$ fallocate -z -o 0 -l 4194304 $DEV
	341	$ hexdump $DEV
	342	0000000 0000 0000 0000 0000 0000 0000 0000 0000
	343	*
	344	0400000
	345	$ sudo rbd unmap $DEV
	346
	347	Full clone:
	348
	349	$ rbd clone img@snap cloneimg4
	350	$ DEV=$(sudo rbd map cloneimg4)
	351
	352	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
	353	$ fallocate -z -o 720896 -l 2719744 $DEV
	354	$ hexdump $DEV
	355	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
	356	*
	357	00b0000 0000 0000 0000 0000 0000 0000 0000 0000
	358	*
	359	0348000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
	360	*
	361	0400000
	362
	363	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
	364	$ fallocate -z -o 1474560 -l 2719744 $DEV
	365	$ hexdump $DEV
	366	0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
	367	*
	368	0168000 0000 0000 0000 0000 0000 0000 0000 0000
	369	*
	370	0400000
	371
	372	$ xfs_io -c 'pwrite -w 0 4M' $DEV >/dev/null
	373	$ fallocate -z -o 0 -l 4194304 $DEV
	374	$ hexdump $DEV
	375	0000000 0000 0000 0000 0000 0000 0000 0000 0000
376	*
377	0400000
378
379	$ sudo rbd unmap $DEV
380
381	Multiple object requests:
382
383	$ rbd create --size 50M --stripe-unit 16K --stripe-count 5 fancyimg
384	$ DEV=$(sudo rbd map fancyimg)
385
386	$ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
387	$ fallocate -z -o 0 -l 143360 $DEV
388	$ hexdump $DEV
389	0000000 0000 0000 0000 0000 0000 0000 0000 0000
390	*
391	0023000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
392	*
393	3200000
394
395	$ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
396	$ fallocate -z -o 0 -l 286720 $DEV
397	$ hexdump $DEV
398	0000000 0000 0000 0000 0000 0000 0000 0000 0000
399	*
400	0046000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
401	*
402	3200000
403
404	$ xfs_io -c 'pwrite -b 4M -w 0 50M' $DEV >/dev/null
405	$ fallocate -z -o 0 -l 573440 $DEV
406	$ hexdump $DEV
407	0000000 0000 0000 0000 0000 0000 0000 0000 0000
408	*
409	008c000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
410	*
411	3200000
412
413	$ sudo rbd unmap $DEV
414
415	$ rbd rm --no-progress fancyimg
416	$ rbd rm --no-progress cloneimg4
417	$ rbd rm --no-progress cloneimg3
418	$ rbd rm --no-progress cloneimg2
419	$ rbd rm --no-progress cloneimg1
420	$ rbd snap unprotect img@snap
421	$ rbd snap rm --no-progress img@snap
422	$ rbd rm --no-progress img