1aoeping(8) System Manager's Manual aoeping(8)
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6 aoeping - simple communication with AoE device
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9 aoeping [options] {shelf} {slot} {netif}
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12 The aoeping program performs simple one or two-round-trip communication
13 with an ATA over Ethernet (AoE) device.
14 Running aoeping without command line arguments will result in a short
16 usage summary being displayed.
17 The aoeping program will wait forever if if doesn't receive an expected
19 response. The caller should use a time out to catch this situation.
20 Arguments
22 shelf This should be the shelf address (major AoE address) of the AoE
23 device to communicate with.
24 slot This should be the slot address (minor AoE address) of the AoE
26 device to communicate with.
27 netif The name of the ethernet network interface to use for AoE commu‐
29 nications, e.g., eth1.
30 Options
32 -i Issue an ATA "identify device" command after receiving the AoE
33 device's Config Query response. The "ident" response will be
34 printed on standard output as a hexidecimal dump.
35 -v Turn on more copious output, including a hexidecimal dump of the
37 Config Query response from the AoE device (see AoE spec at URL
38 below).
39 -s This option takes an argument. The argument is a decimal inte‐
41 ger that specifies the number of seconds that aoeping will wait
42 for a response before timing out and exiting with a non-zero
43 status.
44 -S This option takes an argument. The argument is the name of a
46 SMART command to send to the disk. The SMART commands in the
47 list below are supported. If the command requires data trans‐
48 fer, one sector (512 bytes) of data is always the amount trans‐
49 fered. If the command takes a parameter (for the Low LBA regis‐
50 ter), then the name of the SMART command is immediately followed
51 by a colon and then a number, the value of the parameter, e.g.,
52 "-S read_log:1".
53 read_data
55 offline_immediate
56 read_log
57 write_log
58 enable
59 disable
60 return_status
61 For write_log, aoeping reads from standard input the one sector
63 of data to be written to the specified log.
64 The aoeping command just sends and receives SMART commands,
66 without interpreting them. See the ATA specification for more
67 information on using SMART.
68 -t (This is an advanced feature.) This option has an argument.
70 The argument is a decimal integer that is used as the initial
71 tag, with the highest bit set, as the first tag in ATA commands.
72 Tags for subsequent ATA commands will be incremented by one.
73 -h Show a usage summary.
75
77 In this example, the root user uses aoeping to check for the presence
78 of aoe device e10.9 on network interface eth0.
79 bash# aoeping -v 10 9 eth0 | head
81 tag: 80000000
82 eth: eth0
83 shelf: 10
84 slot: 9
85 config query response:
86 00 0d 87 aa c9 00 00 10 04 00 11 1f 88 a2 18 00
87 00 0a 09 01 00 00 00 00 00 03 30 08 00 10 00 04
88 66 6f 6f 0a 00 ff ff ff ff ff ff ff ff ff ff ff
89 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
90 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
91 The next example shows root making sure the disk on the e10.9 is still
93 responsive by issuing an ATA device identify command with a 20-second
94 timeout.
95 bash# aoeping -i -s 20 \
97 10 9 eth0 > /dev/null \
98 && echo ok
99 ok
100 The next example uses SMART to determine whether the disk on e10.9
102 thinks it has exceeded its error threshold. The ATA spec says that the
103 LBA Mid register will be 0x4f when the disk has not exceeded its error
104 threshold.
105 bash# aoeping -S return_status \
107 10 9 eth0 | grep 'LBA Mid: 0x4f' \
108 > /dev/null \
109 && echo ok
110 ok
111 Note that in a script, it would be prudent to specify and handle a
113 timeout. Also, a good script would make sure the Status register does
114 not have the error bit (bit zero) or the device fault bit (bit 5) set.
115
117 aoe-discover(8), aoe-interfaces(8), aoe-mkdevs(8), aoe-mkshelf(8), aoe-
118 stat(8),
119 AoE (ATA over Ethernet): http://www.coraid.com/documents/AoEr8.txt,
121 ATA specification
123
125 Ed L. Cashin (ecashin@coraid.com)
126 aoeping(8)