[Lustre-discuss] lfs find bug

[Michael Barnes]

List,

lfs find is not finding all OSTs on our system.  This may be due to a bug we
triggered by having deactivated OSTs.  OST9-28 don't exist, and lustre find
cannot find OST29, which is the first OST after a sequence of missing ones.

Example:

$ lfs getstripe .
OBDS:
0: lustre-OST0000_UUID ACTIVE
1: lustre-OST0001_UUID ACTIVE
2: lustre-OST0002_UUID ACTIVE
3: lustre-OST0003_UUID ACTIVE
4: lustre-OST0004_UUID ACTIVE
5: lustre-OST0005_UUID ACTIVE
6: lustre-OST0006_UUID ACTIVE
7: lustre-OST0007_UUID ACTIVE
8: lustre-OST0008_UUID ACTIVE
41: lustre-OST0029_UUID ACTIVE
42: lustre-OST002a_UUID ACTIVE
43: lustre-OST002b_UUID ACTIVE
44: lustre-OST002c_UUID ACTIVE
45: lustre-OST002d_UUID ACTIVE
46: lustre-OST002e_UUID ACTIVE
47: lustre-OST002f_UUID ACTIVE
48: lustre-OST0030_UUID ACTIVE
49: lustre-OST0031_UUID ACTIVE
50: lustre-OST0032_UUID ACTIVE
51: lustre-OST0033_UUID ACTIVE
52: lustre-OST0034_UUID ACTIVE
53: lustre-OST0035_UUID ACTIVE
54: lustre-OST0036_UUID ACTIVE
55: lustre-OST0037_UUID ACTIVE
56: lustre-OST0038_UUID ACTIVE
57: lustre-OST0039_UUID ACTIVE
58: lustre-OST003a_UUID ACTIVE
59: lustre-OST003b_UUID ACTIVE
60: lustre-OST003c_UUID ACTIVE
61: lustre-OST003d_UUID ACTIVE
62: lustre-OST003e_UUID ACTIVE
63: lustre-OST003f_UUID ACTIVE
64: lustre-OST0040_UUID ACTIVE
65: lustre-OST0041_UUID ACTIVE
66: lustre-OST0042_UUID ACTIVE
67: lustre-OST0043_UUID ACTIVE
68: lustre-OST0044_UUID ACTIVE
.
(Default) stripe_count: 1 stripe_size: 1048576 stripe_offset: -1
./loss12.out
	obdidx		 objid		objid		 group
	    42	       6678168	     0x65e698	             0

./lustre-OST0029
	obdidx		 objid		objid		 group
	    41	       6953217	     0x6a1901	             0

./lustre-OST002a
	obdidx		 objid		objid		 group
	    42	       6841347	     0x686403	             0


$ lfs find -O lustre-OST002a_UUID .
./loss12.out
./lustre-OST002a

$ lfs find -O lustre-OST0029_UUID .
<NOTHING>

-mb

--
+-----------------------------------------------
| Michael Barnes
|
| Thomas Jefferson National Accelerator Facility
| Scientific Computing Group
| 12000 Jefferson Ave.
| Newport News, VA 23606
| (757) 269-7634
+-----------------------------------------------