smp_conf_zone_perm_tbl man page on Fedora
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SMP_CONF_ZONE_PERM_TBL(8) SMP_UTILS SMP_CONF_ZONE_PERM_TBL(8)
NAME
smp_conf_zone_perm_tbl - invoke CONFIGURE ZONE PERMISSION TABLE func‐
tion
SYNOPSIS
smp_conf_zone_perm_tbl [--deduce] [--expected=EX] [--help] [--hex]
[--interface=PARAMS] [--numzg=NG] --permf=FN [--raw] [--sa=SAS_ADDR]
[--save=SAV] [--start=SS] [--verbose] [--version] SMP_DEVICE[,N]
DESCRIPTION
Sends one or more SAS Management Protocol (SMP) CONFIGURE ZONE PERMIS‐
SION TABLE function requests to a SMP target. The SMP target is identi‐
fied by the SMP_DEVICE and the --sa=SAS_ADDR. Depending on the inter‐
face, the SAS_ADDR may be deduced from the SMP_DEVICE. The mpt inter‐
face uses SMP_DEVICE to identify a HBA (an SMP initiator) and needs the
additional ,N to differentiate between HBAs if there are multiple
present.
The zone permission table has a row for each source zone group and a
column for each destination zone group. Each element in the table
(ZP[s,d]) is a single bit indicating whether the source zone group can
access the destination zone group (the bit is set: 1) or not (the bit
is clear: 0). There are two different table sizes: 128 and 256 zone
groups. Descriptors provided to this function request are either 16
bytes (128 bits) or 32 bytes (256 bits) long. Each descriptor is basi‐
cally a row in the zone permission table.
Apart from being row in the zone permission table each descriptor is
transposed and applied to the corresponding destination column. This
"maintains symmetry about the ZP[s,s] table axis" in the words of the
draft. Also descriptors are applied in the order that they appear in
the request (i.e. ascending source zone group numbers).
The maximum number of descriptors that one CONFIGURE ZONE PERMISSION
TABLE function request can hold is limited to 63 if there are 128 zone
groups; and is limited to 31 if there are 256 zone groups. A full zone
table will contain 128 (or 256) descriptors so to configure a full ta‐
ble requires multiple CONFIGURE ZONE PERMISSION TABLE requests.
The number of zone permission configuration descriptors is determined
by reading the FN file associated with the --permf=FN option. If there
are more descriptors than can fit in one CONFIGURE ZONE PERMISSION TA‐
BLE function request then multiple requests are sent. All descriptors
found in the FN file will be sent unless an earlier function response
indicates there has been an error.
OPTIONS
Mandatory arguments to long options are mandatory for short options as
well.
-d, --deduce
deduce number of zone groups from number of bytes on active FN
lines. With 128 zone groups each active line will contain 16
(or less) bytes. With this option if any active line in FN con‐
tains more than 16 bytes then 256 zone groups are assumed, oth‐
erwise 128 zone groups are assumed. This option cannot be given
with the --numzg=NG option (as they may contradict one another).
-E, --expected=EX
set the 'expected expander change count' field in the SMP
request. The value EX is from 0 to 65535 inclusive with 0 being
the default value. When EX is greater than zero then if the
value doesn't match the expander change count of the SMP target
(i.e. the expander) when the request arrives then the target
ignores the request and sets a function result of "invalid
expander change count" in the response.
-f, --start=SS
starting (first) source zone group (default: zone group 0). If
multiple function requests are sent, this field in subsequent
function requests will be adjusted to reflect those descriptors
already sent. Note that the SS value may be picked up from FN
and if this option and that value are not the same, an error is
generated.
-h, --help
output the usage message then exit.
-H, --hex
output the response (less the CRC field) in hexadecimal.
-I, --interface=PARAMS
interface specific parameters. In this case "interface" refers
to the path through the operating system to the SMP initiator.
See the smp_utils man page for more information.
-n, --numzg=ZG
number of zone groups. ZG can be 0 (default) or 1. 0 implies 128
zone groups while 1 implies 256 zone groups. This option cannot
be used with the --deduce option.
-P, --permf=FN
FN is a file containing zone permission configuration descrip‐
tors in ASCII hexadecimal; either as bytes separated by space,
tab, comma or newline, or as longer strings of hexadecimal bytes
in which every 2 digits represents a byte. Empty lines and those
starting with "#" are ignored. A line with "--start=<num>" will
be taken as the starting source zone group number (i.e. <num>
becomes SS) unless it contradicts the command line --start=SS
option. Otherwise lines starting with "-" are ignored.
-r, --raw
send the response (less the CRC field) to stdout in binary. All
error messages are sent to stderr.
-s, --sa=SAS_ADDR
specifies the SAS address of the SMP target device. The mpt
interface needs this option and it will typically be an
expander's SAS address. The SAS_ADDR is in decimal but most SAS
addresses are shown in hexadecimal. To give a number in hexa‐
decimal either prefix it with '0x' or put a trailing 'h' on it.
-S, --save=SAV
set the 'save' field in the SMP request. SAV may take these val‐
ues: 0 for updating the shadow values (default), 1 for updating
the saved values, 2 for updating shadow values and if available
the saved values, 3 for updating both saved and shadow values.
-f, --start=SS
See entry above, listed in order by its short option letter
(i.e. -f).
-v, --verbose
increase the verbosity of the output. Can be used multiple
times.
-V, --version
print the version string and then exit.
NOTES
For simplicity, each active line in the FN file should contain 16 or 32
bytes. 16 bytes if there are 128 zone groups or 32 bytes if there are
256 zone groups.
SCSI is big endian. So for 128 zone groups, the first byte placed in
the zone permission configuration descriptor is ZP[0,127-120]. If the
--start=SS option is given then the first byte is ZP[SS,127-120]. For
256 zone groups, the first bytes are ZP[0,255-248] and ZP[SS,255-248]
respectively.
There is an annex called "Zone permission configuration descriptor
examples" in recent SAS-2 and later drafts (Annex H in spl2r01.pdf).
There are some examples of the --permf=FN format in the examples direc‐
tory. Not all SAS-2 expanders properly implement descriptor transpose
and only place the descriptor in the row corresponding to the source
zone group.
CONFORMING TO
The SMP CONFIGURE ZONE PERMISSION TABLE function was introduced in
SAS-2 .
AUTHORS
Written by Douglas Gilbert.
REPORTING BUGS
Report bugs to <dgilbert at interlog dot com>.
COPYRIGHT
Copyright © 2011 Douglas Gilbert
This software is distributed under a FreeBSD license. There is NO war‐
ranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PUR‐
POSE.
SEE ALSO
smp_utils, smp_conf_zone_phy_info, smp_zone_activate(smp_utils)
smp_utils-0.96 June 2011 SMP_CONF_ZONE_PERM_TBL(8)
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