IBLINKINFO(8) OpenIB Diagnostics IBLINKINFO(8)NAME
IBLINKINFO - report link info for all links in the fabric
SYNOPSISiblinkinfo <options>
DESCRIPTIONiblinkinfo reports link info for each port in an IB fabric, node by
node. Optionally, iblinkinfo can do partial scans and limit its output
to parts of a fabric.
OPTIONS--down, -d Print only nodes which have a port in the "Down" state.
--line, -l Print all information for each link on one line. Default is
to print a header with the node information and then a list for each
port (useful for grep'ing output).
--additional, -p Print additional port settings (<Life‐
Time>,<HoqLife>,<VLStallCount>)
--switches-only Show only switches in output.
--cas-only Show only CAs in output.
Partial Scan flags
The node to start a partial scan can be specified with the following
addresses.
--port-guid, -G <port_guid> Specify a port_guid
-D, --Direct <dr_path> The address specified is a directed route
Examples:
-D "0" # self port
-D "0,1,2,1,4" # out via port 1, then 2, ...
(Note the second number in the path specified must match the port being
used. This can be specified using the port selection flag '-P' or the
port found through the automatic selection process.)
Note: For switches results are printed for all ports not just switch
port 0.
--switch, -S <port_guid> same as "-G". (provided only for backward com‐
patibility)
How much of the scan to be printed can be controled with the following.
--all, -a Print all nodes found in a partial fabric scan. Normally a
partial fabric scan will return only the node specified. This option
will print the other nodes found as well.
--hops, -n <hops> Specify the number of hops away from a specified node
to scan. This is useful to expand a partial fabric scan beyond the
node specified.
Cache File flags
--load-cache <filename> Load and use the cached ibnetdiscover data
stored in the specified filename. May be useful for outputting and
learning about other fabrics or a previous state of a fabric.
--diff <filename> Load cached ibnetdiscover data and do a diff compari‐
son to the current network or another cache. A special diff output for
ibnetdiscover output will be displayed showing differences between the
old and current fabric. By default, the following are compared for
differences: switches, channel adapters, routers, and port connections.
--diffcheck <key(s)> Specify what diff checks should be done in the
--diff option above. Comma separate multiple diff check key(s). The
available diff checks are: sw = switches, ca = channel adapters, router
= routers, port = port connections, lid = lids, nodedesc = node
descriptions. Note that port, lid, and nodedesc are checked only for
the node types that are specified (e.g. sw, ca, router). If port is
specified alongside lid or nodedesc, remote port lids and node descrip‐
tions will also be compared.
--filterdownports <filename> Filter downports indicated in a ibnetdis‐
cover cache. If a port was previously indicated as down in the speci‐
fied cache, and is still down, do not output it in the resulting out‐
put. This option may be particularly useful for environments where
switches are not fully populated, thus much of the default iblinkinfo
info is considered unuseful. See ibnetdiscover for information on
caching ibnetdiscover output.
Port Selection flags
-C, --Ca <ca_name> use the specified ca_name.
-P, --Port <ca_port> use the specified ca_port.
Local port Selection
Multiple port/Multiple CA support: when no IB device or port is speci‐
fied (see the "local umad parameters" below), the libibumad library
selects the port to use by the following criteria:
1. the first port that is ACTIVE.
2. if not found, the first port that is UP (physical link up).
If a port and/or CA name is specified, the libibumad library
attempts to fulfill the user request, and will fail if it is not
possible.
For example:
ibaddr # use the first port (criteria #1 above)
ibaddr -C mthca1 # pick the best port from "mthca1" only.
ibaddr -P 2 # use the second (active/up) port from the first available IB device.
ibaddr -C mthca0 -P 2 # use the specified port only.
Configuration flags
--config, -z <config_file> Specify alternate config file.
Default: /etc/infiniband-diags/ibdiag.conf
--outstanding_smps, -o <val>
Specify the number of outstanding SMP's which should be issued
during the scan
Default: 2
--node-name-map <node-name-map> Specify a node name map.
This file maps GUIDs to more user friendly names. See FILES sec‐
tion.
-t, --timeout <timeout_ms> override the default timeout for the
solicited mads.
-y, --m_key <key>
use the specified M_key for requests. If non-numeric value (like
'x') is specified then a value will be prompted for.
Debugging flags
-e show send and receive errors (timeouts and others)
-h, --help show the usage message
-v, --verbose
increase the application verbosity level. May be used several
times (-vv or -v -v -v)
-V, --version show the version info.
-R (This option is obsolete and does nothing)
EXIT STATUS
0 on success, -1 on failure to scan the fabric, 1 if check mode is used
and inconsistencies are found.
FILES
CONFIG FILE
/etc/infiniband-diags/ibdiag.conf
A global config file is provided to set some of the common options for
all tools. See supplied config file for details.
NODE NAME MAP FILE FORMAT
The node name map is used to specify user friendly names for nodes in
the output. GUIDs are used to perform the lookup.
This functionality is provided by the opensm-libs package. See
opensm(8) for the file location for your installation.
Generically:
# comment
<guid> "<name>"
Example:
# IB1
# Line cards
0x0008f104003f125c "IB1 (Rack 11 slot 1 ) ISR9288/ISR9096 Voltaire sLB-24D"
0x0008f104003f125d "IB1 (Rack 11 slot 1 ) ISR9288/ISR9096 Voltaire sLB-24D"
0x0008f104003f10d2 "IB1 (Rack 11 slot 2 ) ISR9288/ISR9096 Voltaire sLB-24D"
0x0008f104003f10d3 "IB1 (Rack 11 slot 2 ) ISR9288/ISR9096 Voltaire sLB-24D"
0x0008f104003f10bf "IB1 (Rack 11 slot 12 ) ISR9288/ISR9096 Voltaire sLB-24D"
# Spines
0x0008f10400400e2d "IB1 (Rack 11 spine 1 ) ISR9288 Voltaire sFB-12D"
0x0008f10400400e2e "IB1 (Rack 11 spine 1 ) ISR9288 Voltaire sFB-12D"
0x0008f10400400e2f "IB1 (Rack 11 spine 1 ) ISR9288 Voltaire sFB-12D"
0x0008f10400400e31 "IB1 (Rack 11 spine 2 ) ISR9288 Voltaire sFB-12D"
0x0008f10400400e32 "IB1 (Rack 11 spine 2 ) ISR9288 Voltaire sFB-12D"
# GUID Node Name
0x0008f10400411a08 "SW1 (Rack 3) ISR9024 Voltaire 9024D"
0x0008f10400411a28 "SW2 (Rack 3) ISR9024 Voltaire 9024D"
0x0008f10400411a34 "SW3 (Rack 3) ISR9024 Voltaire 9024D"
0x0008f104004119d0 "SW4 (Rack 3) ISR9024 Voltaire 9024D"
AUTHOR
Ira Weiny
< weiny2@llnl.gov >
IBLINKINFO(8)
