Compare Hp-Unix and IBM AIX Commands - Part 1

Hp-UX: # ioscan -C disk : To list all the Disk detected in the machine.
IBM AIX: # lsdev -Cc disk : To list all the Disk detected in the machine.

Hp-UX: #ioscan -fnC fc : To list the FC Adapter in the machine.
IBM AIX:  # lsdev -Cc adapter | grep -i fcs : To list the FC Adapter in the machine.

Hp-UX: # ioscan -funC fc /dev/td# : To view more information about a FC Adapter.
IBM AIX:  # lsattr -EHl fcs0 :To view the more information about a FC Adapter.

Hp-UX:  # /opt/fcms/bin/tdutil /dev/td# | grep -i "World Wide Name" : Command to view the WWN Number.
IBM AIX:  #  lscfg -vpl fcs# | grep -i "Network Address" : Command to view WWN Number

Hp-UX: # ioscan -m hwpath : Command to view hardware path of the disk.
IBM AIX:  # lcsfg -vpl hdisk# : Command to view the hardware path of the disk.

Hp-UX: # ioscan -m lun : Display all the LUN's connected.
IBM AIX: # lspv : Display all the LUN's connected.

Hp-UX: # swlist -l : Command to list all the softwares installed in the machine.
IBM AIX:  # lslpp -l : Command to list all the softwares installed in the machine.

Hp-UX: # bdf  : To view the disk and the filesystem usage.
IBM AIX:  # df : To view the disk and the filesystem usage.

Hp-UX: # lvlnboot -v : To veiw the current boot list.
IBM AIX:  @ bootlist -m normal/secure/both -o

Hp-UX: # setboot : Command to set the bootlist.
IBM AIX:# bootlist -m normal/secure/both -o hdisk# blv=hd5

Hp-UX: # swapinfo -a : Command to view the paging space.
IBM AIX:# lsps -a : Command to view the paging space.

Hp-UX: # diskinfo -v /dev/rdsk/c#t#d3 : To view the size of the disk.
IBM AIX:# bootinfo -s hdisk# : To view the size of the disk.

lastcomm better than history and last

By default the history command shows the "last executed command" in the machine. Rather # history and #last command failed to give more information which the #lastcomm provides.

To use the #lastcomm command, we need start the service:

1) bash-3.2# /usr/sbin/acct/startup

2) bash-3.2# lastcomm
bsh          S     root     pts/0      0.03 secs Tue Dec 13 08:15
bsh          S     root     pts/0      0.02 secs Tue Dec 13 08:15
rm           S     root     pts/0      0.01 secs Tue Dec 13 08:15
rm           S     root     pts/0      0.01 secs Tue Dec 13 08:15
rm           S     root     pts/0      0.01 secs Tue Dec 13 08:15
rm           S     root     pts/0      0.01 secs Tue Dec 13 08:15
rm           S     root     pts/0      0.01 secs Tue Dec 13 08:15
rm           S     root     pts/0      0.01 secs Tue Dec 13 08:15
bsh          S     root     pts/0      0.01 secs Tue Dec 13 08:15
accton       S     root     pts/0      0.01 secs Tue Dec 13 08:15
1st col : Command executed.
2nd col: Command executed by whom. S:root
3rd col: Owner of the command.
4th col: Terminal.
5th col: Execution time of the command.
6th col: Date and Time.

3) bash-3.2# who
root        pts/0       Dec 13 06:20     (ABTS-TN-Static-067.62.165.122.airtelbroadband.in)
root        pts/1       Dec 13 06:24     (122.248.161.91)
root        pts/2       Dec 13 08:05     (ABTS-TN-Static-102.64.165.122.airtelbroadband.in)
root        pts/3       Dec 13 08:18     (122.165.62.67)
root        pts/4       Dec 13 07:16     (122.248.161.91)
4) bash-3.2# lastcomm root pts/3 : List the command executed by a root user on the terminal pts/3
tty          S     root     pts/3      0.01 secs Tue Dec 13 08:18
sar          S     root     pts/3      0.01 secs Tue Dec 13 08:18
sadc         S     root     pts/3      0.14 secs Tue Dec 13 08:18
5) bash-3.2# lastcomm root : List all the commands executed by the root user.
lastcomm     S     root     pts/0      0.03 secs Tue Dec 13 08:19
lastcomm     S     root     pts/0      0.03 secs Tue Dec 13 08:19
lastcomm     S     root     pts/0      0.03 secs Tue Dec 13 08:19
lastcomm     S     root     pts/0      0.03 secs Tue Dec 13 08:19
nfssync_kpro    DX root     __         0.01 secs Tue Dec 13 08:18
who          S     root     pts/0      0.01 secs Tue Dec 13 08:18
tty          S     root     pts/3      0.01 secs Tue Dec 13 08:18
lastcomm     S     root     pts/0      0.03 secs Tue Dec 13 08:18
sar          S     root     pts/3      0.01 secs Tue Dec 13 08:18
sadc         S     root     pts/3      0.14 secs Tue Dec 13 08:18
sar          S     root     pts/3      0.01 secs Tue Dec 13 08:18
termdef      S     root     pts/3      0.01 secs Tue Dec 13 08:18
setmaps      S     root     pts/3      0.01 secs Tue Dec 13 08:18
tty          S     root     pts/0      0.01 secs Tue Dec 13 08:18
lastcomm     S     root     pts/0      0.02 secs Tue Dec 13 08:18
nfssync_kpro    DX root     __         0.01 secs Tue Dec 13 08:17
lastcomm     S     root     pts/0      0.02 secs Tue Dec 13 08:17
clear        S     root     pts/0      0.01 secs Tue Dec 13 08:17
file         S     root     pts/0      0.02 secs Tue Dec 13 08:17
more         S     root     pts/0      0.01 secs Tue Dec 13 08:17
ls           S     root     pts/0      0.03 secs Tue Dec 13 08:17
nfssync_kpro    DX root     __         0.01 secs Tue Dec 13 08:16
nfssync_kpro    DX root     __         0.01 secs Tue Dec 13 08:15
lastcomm     S     root     pts/0      0.02 secs Tue Dec 13 08:15
bsh          S     root     pts/0      0.03 secs Tue Dec 13 08:15
bsh          S     root     pts/0      0.02 secs Tue Dec 13 08:15
rm           S     root     pts/0      0.01 secs Tue Dec 13 08:15
rm           S     root     pts/0      0.01 secs Tue Dec 13 08:15
rm           S     root     pts/0      0.01 secs Tue Dec 13 08:15
rm           S     root     pts/0      0.01 secs Tue Dec 13 08:15
rm           S     root     pts/0      0.01 secs Tue Dec 13 08:15
rm           S     root     pts/0      0.01 secs Tue Dec 13 08:15
bsh          S     root     pts/0      0.01 secs Tue Dec 13 08:15
accton       S     root     pts/0      0.01 secs Tue Dec 13 08:15
6) bash-3.2# date
Tue Dec 13 08:22:09 CST 2011
bash-3.2# lastcomm date : Shows when the date command was executed.
date         S     root     pts/0      0.01 secs Tue Dec 13 08:22

              S  The root user executed the command.
              F  The command ran after a fork, but without a following subroutine.
              C  The command ran in PDP-11 compatibility mode.
              D  The command terminated with the generation of a core file.
              X  The command was terminated with a signal.

Find Your Device Driver Fileset In 3 Steps

In case you want to the device drive fileset name of your tape drive rmt#:

1) bash-3.2# odmget CuDv | grep -p rmt
CuDv:
        name = "rmt0"
        status = 1
        chgstatus = 2
        ddins = "tape"        location = "10-60-00-5,0"
        parent = "scsi0"
        connwhere = "5,0"
        PdDvLn = "tape/scsi/scsd"
Make a note of the ddins="tape"

2) bash-3.2# find / -name "tape" -ls
30861   60 -r-xr-xr-x  1 root      system       58964 Aug  5  2005 /usr/lib/drivers/tape122898    4 drwxr-xr-x  2 root      system         512 Jan 10  2006 /usr/lpp/bosinst/tape

3) bash-3.2# lslpp -w /usr/lib/drivers/tape
  File                                        Fileset               Type
  ----------------------------------------------------------------------------
  /usr/lib/drivers/tape          devices.scsi.tape.rte        File

So the device driver of the tape drive belongs to the fileset "devices.scsi.tape.rte"

Types of AIX Boot

There are four basic boot types.

·         Warm boot:
Booting a running system by performing a shut down and reboot in a single operation. This type of boot is also known as a soft IPL (Initial Program Load).

·         Cold boot:
Booting a halted system.

·         Timed boot:
Booting a halted system automatically after a specified period of time.

·         Crash boot:
Automatic reboot of a system that has crashed.

lastcomm Command

Displays information about the last commands executed.

The lastcomm command displays information, in reverse chronological order, about all previously executed commands that are still recorded in the /var/adm/pacct summary file. You need to run the /usr/sbin/acct/startup command before you can execute the lastcomm command.

lastcomm [ -X ][ Command ] [ Name ] [ Terminal ]

/var/adm/sulog

The su log file is used to log attempts to become a superuser.

SU 07/08 10:57 + pts/0 root-root
SU 07/11 12:44 + pts/0 root-nobody
SU 07/25 16:37 + pts/5 dcoca-root
SU 09/11 10:21 + pts/1 mrj1-root

SU : Switch User action was performed.

07/08 : Date and Month at which the action was performed.

10:57 : Time at which the action was performed.

+ : Indicate a successful Switch User.

pts/0 : In which Pseudo Termial the action was performed.

dcoca-root : From which user, the root was switched from.

FIBER CHANNEL ADAPTER SETTINGS

root@aix21b09: / # lsattr -El fscsi0
attach       switch       How this adapter is CONNECTED         False   <-- shows actual connection protocol (None,switch,al lehet)
dyntrk       no           Dynamic Tracking of FC Devices        True    <-- dynamically follows SAN changes
fc_err_recov delayed_fail FC Fabric Event Error RECOVERY Policy True    <-- 3. delayed_fail or fast_fail
scsi_id      0x133300     Adapter SCSI ID                       False
sw_fc_class  3            FC Class for Fabric                   True

root@aix21b09: / # lsattr -El fcs0
bus_intr_lvl  305        Bus interrupt level                                False
bus_io_addr   0xffc00    Bus I/O address                                    False
bus_mem_addr  0xfffbf000 Bus memory address                                 False
init_link     al         INIT Link flags                                    True    <--al or pt2pt
intr_priority 3          Interrupt priority                                 False
lg_term_dma   0x800000   Long term DMA                                      True    <--deafault 0x200000, max. 0x8000000
max_xfer_size 0x100000   Maximum Transfer Size                              True    <--default is 100000, max 1000000
num_cmd_elems 200        Maximum number of COMMANDS to queue to the adapter True    <--default 200, max is 1024 or 2048
pref_alpa     0x1        Preferred AL_PA                                    True
sw_fc_class   2          FC Class for Fabric                                True


attach:(sets the Fiber Channel topology)
    none: if no cable has been plugged in
    al: all devices are in a loop or ring, similar to token ring networking. The failure of one device causes a break in the ring.
    switch: all devices or loops of devices are connected to Fibre Channel switches, similar conceptually to modern Ethernet implementations  

dyntrk:
    http://publib.boulder.ibm.com/infocenter/systems/index.jsp?topic=/com.ibm.aix.prftungd/doc/prftungd/fast_fail_dynamic_interaction.htm
    If it is on yes, it enables dynamic changing of fibre channel cable connections on switch ports or storage ports.
    We have changed few StoragePorts to another Switch last saturday ==> that means, that the HardwarePath changed for these servers,
    where the Option "dyntrk" is set to no. --> reconfigure your disks

fc_err_recov:
    http://publib.boulder.ibm.com/infocenter/systems/index.jsp?topic=/com.ibm.aix.prftungd/doc/prftungd/fast_fail_dynamic_interaction.htm

    delayed_fail: waits some time before acting.
    fast_fail is useful where multipathing software is used. This would support faster failover to alternate paths

init_link:
    from online help: "Do not change this attribute unless directed by IBM support."
    al: arbitrared loop : first tries al, then pt2pt, if not succes then link remains down
    pt2pt: tries pt2pt, if not succes then link remains down

lg_term_dma:
    it controls the DMA memory resource that an adapter driver can use.
    If you have a dual port adapter the maximum value is divided between the adapter ports.

max_xfer_size:
    controls the maximum transfer size. You can increase this value to improve performance.
    Different storages might need different values to utilize the performance

num_cmd_elems:
    Maximum number of commands to be queued to the adapter.
    When a large number of supported storage devices are configured, you can increase this to improve performance.