it's been a while when I was working with rdac, but afaik each lun is presented by one storage controller, and in case the adapter zoned to this controller fails, the storage moves the lun to the other controller, which leads to a few seconds of time where the lun is not accessible
but our zoning was different, each adapter just saw one controller, maybe this has changed in the meantime
I executed the following command in the korn shell:
$ variable1="qwerty" ls | sort
and the shell executed the 'ls | sort' command.
I would have expected an error message from the shell, but instead of that the shell ran the 'ls | sort' command and didn't realize the variable assignement. ... (1 Reply)
I have used SAR -b to get some Unix cache / buffer metrics and the results are confusing me a bit.
The pread/s & pwrit/s are showing 0. However the lread/s and lwrit/s are showing figures. I note also that the bread/s and bwrit/s are showing figures. I believe that pread/s and pwrit/s is not... (3 Replies)
Hi Guys,
This is really really urgent. Am looking out for some quick answers.
I'm developing a DNS Resolver client that interprets DNS Query repsonses & pass on the needful to DNS applications.
When an ENUM query(modified to an nslookup naptr query) is issued & an NAPTR RR(Resource Record)... (1 Reply)
Hi,
I am not sure what I am doing wrong but I am messing up some logic here. The input file is something like this:
*___String Type A Here___String Type B Here___123
*___ ___String Type B Here___123
*___ ___String Type B Here___123
*___ ... (6 Replies)
Can anyone recommend me some reading material surrounding how AIX handles LUNs:
- with and without MPIO installed
- with and without SDD or SDDPCM installed
Where does lspath sit in all of this (MPIO layer?). Can a system be built with just MPIO software? Is MPIO software even needed?
I guess... (0 Replies)
I'm writing a Korn script but am having trouble because the shell interprets the asterisk in this case. Can anyone tell me if there is a way to fix this so that grep takes in STDIN without the interpretation?
line="30 09 * * 1-4 /home/user01/bin/start"
echo "$line" | grep 'start' (16 Replies)
hi, anyone can help on this piece of truss output?
8094: 0.7028 write(4, 0x0043BE90, 236) = 236
8094: T S H \0\0\0EC020101\0\0\0\0\0\0\0\0\0 "02\0\0 303\0\0 I D
8094: \f %\0\0\0\0 2\0F67F\0\0\0\0 @06FFC99A ;
8094: L D6\0 303
8094: ... (6 Replies)
Discussion started by: ghostdog74
6 Replies
LEARN ABOUT OSX
mpioutil
mpioutil(1) BSD General Commands Manual mpioutil(1)NAME
mpioutil -- Tool for configuring paths to multipathed logical units.
SYNOPSIS
mpioutil verb direct-object arguments
DESCRIPTION
mpioutil is a utility to manage multiple paths to a SCSI Logical Unit.
VERBS, DIRECT OBJECTS, AND SPECIFIC ARGUMENTS
list
Lists all multipathed logical units.
info -i <lun identifier>
Get information on a multipathed logical unit. The -i flag may also be expressed as --id.
modify lun -i <lun identifier> -a <load balancing algorithm> -b <round robin batch count>
Modify a logical unit. The -i, -a, -b flags may also be expressed as --id, --algorithm, and --batchCount respectively.
modify path -l <lun identifier> -i <path identifier> -e | -d
Modify a path on a logical unit. The -l, -i, -e, and -d flags may also be expressed as --lun, --id, --enable, and --disable respec-
tively.
EXAMPLES
mpioutil list
Lists all multipathed logical units.
mpioutil info --id 22F2000155A508ED
Get information for a multipathed lun with id 22F2000155A508ED.
mpioutil modify lun --id 22F2000155A508ED --algorithm RoundRobin --batchCount 16
Modify a multipathed lun's algorithm to be RoundRobin with a batch count of 16.
mpioutil modify lun --id 22F2000155A508ED --algorithm LeastIO
Modify a multipathed lun's algorithm to be LeastIO.
mpioutil modify path --lun 22F2000155A508ED --id 26010001553560BF00000001 --disable
Disable a path that belongs to a multipathed logical unit.
Darwin June 2, 2019 Darwin