Powerpath 5.0.0-157 and SLES9

Question

Hi,

if have the following not working scenario (IBM Blade HS21 XM and EMC CLARiiON CX3 Model 20):

Reboot of the blade fails if SP ownership on storage side is changed from SPA to SPB, we found out that emc powerpath doesn't come into play even all paths are active/alive.We are wondering if powerpath is properly loaded in the kernel.

Question:How can we ensure that powerpath is properly loaded in the kernel and blade should come up clean even if ownership is moved to SPB on storage side.

To install the PowerPath in our medium based on SLES9 SP3, we have done following:
1. Install rpm EMCpower.LINUX-5.0.0-157 with proper Powerpath license.
2. Modified /etc/sysconfig/kernel file so as to add qla2xxx_conf and qla2xxx.
3. Cleaned up /etc/qla2xxx.conf file. This file is attached for your review.
4. mkinitrd
5. chkconfig PowerPath on

All 4 path to boot and all 4 paths to data are in active/alive state.

Additional test failed: Even if 1st path sda (HBA0-SPA0) is dead, reboot fails.

Any ideas to solve this problems ?

THX

/etc/qla2xxx.conf:
scsi-qla0-adapter-port=2100001b3218a325\;
scsi-qla0-tgt-0-di-0-node=50060160c1e04437\;
scsi-qla0-tgt-0-di-0-port=5006016041e04437\;
scsi-qla0-tgt-1-di-0-node=50060160b9a02c5e\;
scsi-qla0-tgt-1-di-0-port=5006016039a02c5e\;
scsi-qla0-tgt-2-di-0-node=50060160c1e04437\;
scsi-qla0-tgt-2-di-0-port=5006016841e04437\;
scsi-qla0-tgt-3-di-0-node=50060160b9a02c5e\;
scsi-qla0-tgt-3-di-0-port=5006016839a02c5e\;
scsi-qla1-adapter-port=2101001b3238a325\;
scsi-qla1-tgt-6-di-0-node=50060160c1e04437\;
scsi-qla1-tgt-6-di-0-port=5006016941e04437\;
scsi-qla1-tgt-4-di-0-node=50060160c1e04437\;
scsi-qla1-tgt-4-di-0-port=5006016141e04437\;
scsi-qla1-tgt-7-di-0-node=50060160b9a02c5e\;
scsi-qla1-tgt-7-di-0-port=5006016a39a02c5e\;
scsi-qla1-tgt-5-di-0-node=50060160b9a02c5e\;
scsi-qla1-tgt-5-di-0-port=5006016239a02c5e\;

SKT2 · Answer

'How can we ensure that powerpath is properly loaded in the kernel 'if the system is responding to 'powermt display' that indicates the PP is loaded in the kernel. Other wise you may get a 'initilization error'Check the license is properly updated #emcpreg -list'Additional test failed: Even if 1st path sda (HBA0-SPA0) is dead, reboot fails'COuld you explain a little more?

dynamox · Answer

lsmod |grep emcshould return something like this:emcpdm 42724 0 emcpgpx 21300 1 emcpdm emcpmpx 155416 1 emcp 1319924 3 emcpdm,emcpgpx,emcpmpx scsi_mod 120269 8 sg,lpfcdfc,emcp,lpfc,scsi_transport_fc,cciss,aic7xxx,sd_mod can you paste content of modprobe.conf ..we need to make sure you don't have Qlogic HBA failover enabled as you have PowerPath to do that for you.

eisi1 · Answer

# powermt display dev=allPseudo name=emcpoweraCLARiiON ID=APM00071600170 [KQHXKM1]Logical device ID=6006016004331B00B22E4F5E0D92DC11 [LUN 15]state=alive; policy=CLAROpt; priority=0; queued-IOs=0Owner: default=SP A, current=SP A==============================================================================---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---### HW Path I/O Paths Interf. Mode State Q-IOs Errors============================================================================== 2 qla2xxx sda SP A0 active alive 0 0 2 qla2xxx sdc SP B0 active alive 0 0 3 qla2xxx sde SP A1 active alive 0 0 3 qla2xxx sdg SP B1 active alive 0 0Pseudo name=emcpowerbCLARiiON ID=APM00074300825 [KQHXKM1]Logical device ID=600601608CA61E00FAED9B3B21E6DC11 [ML-16]state=alive; policy=CLAROpt; priority=0; queued-IOs=0Owner: default=SP A, current=SP A==============================================================================---------------- Host --------------- - Stor - -- I/O Path - -- Stats ---### HW Path I/O Paths Interf. Mode State Q-IOs Errors============================================================================== 2 qla2xxx sdb SP A0 active alive 0 0 2 qla2xxx sdd SP B0 active alive 0 0 3 qla2xxx sdf SP A2 active alive 0 0 3 qla2xxx sdh SP B2 active alive 0 0# lsmod |grep emcemcpdm 50208 0emcpgpx 33264 1 emcpdmemcpmpx 174184 8emcp 1895840 3 emcpdm,emcpgpx,emcpmpxemcplib 19200 1 emcpscsi_mod 158848 9 sg,st,sr_mod,emcp,qla2xxx,scsi_transport_fc,ata_piix,libata,sd_mod# emcpreg -listKey ....... Product: PowerPath Capabilities: All# cat modprobe.conf:## Copyright (c) 1996-2002 SuSE Linux AG Nuernberg, Germany.# All rights reserved.## Author: Hubert Mantel , 1996-2002 # # Configuration file for loadable modules; used by modprobe # # ######################################################################## # Aliases - specify your hardware ######################################################################## install eth0 /bin/true install eth1 /bin/true install tr0 /bin/true install scsi_hostadapter /bin/true install fb0 /bin/true ######################################################################## # only used for Mylex or Compaq Raid as module ######################################################################## install block-major-48 /bin/true install block-major-49 /bin/true install block-major-72 /bin/true install block-major-73 /bin/true ######################################################################## # only needed for fifth and sixth IDE adaptor ######################################################################## install block-major-56 /bin/true install block-major-57 /bin/true ######################################################################## # mouse (for older busmice) ######################################################################## install char-major-10 /bin/true ######################################################################## # If you want to use the new autofs4 ######################################################################## # alias autofs autofs4 ######################################################################## # For parallel port devices, uncomment the following two lines and # change 'frpw' to the protocol type you use ######################################################################## # install paride /sbin/modprobe --ignore-install paride && { /sbin/modprobe --ignore-install frpw; } # remove paride { /sbin/modprobe -r --ignore-remove frpw; } ; /sbin/modprobe -r --ignore-remove paride ######################################################################## # # Aliases for OSS # # These aliases will be changed by YaST2 sound configurator. # If you would like to configure OSS drivers by yourself, please # take a look at the files on /usr/src/linux/Documentation/sound. # ######################################################################## install char-major-14 /bin/true install sound /bin/true install midi /bin/true ######################################################################## # Options; these are examples; uncomment and modify the lines you need ######################################################################## # options cdu31a cdu31a_port=0x340 cdu31a_irq=0 # options sbpcd sbpcd=0x230,1 # options aztcd aztcd=0x320 # options cm206 cm206=0x340,11 # options gscd gscd=0x340 # options mcd mcd=0x300,11 # options mcdx mcdx=0x300,11 # options optcd optcd=0x340 # options sjcd sjcd_base=0x340 # options sonycd535 sonycd535=0x340 # options isp16 isp16_cdrom_base=0x340 isp16_cdrom_irq=0 isp16_cdrom_dma=0 isp16_cdrom_type=Sanyo # options ne io=0x300 irq=5 # Use this if you have two cards: # options ne io=0x300,0x320 irq=5,7 # options tulip options=0 # options 3c59x options=0 # options 3c501 io=0x280 irq=5 # options 3c503 io=0x280 irq=5 xcvr=0 # options 3c505 io=0x300 irq=10 # options 3c507 io=0x300 irq=10 # options 3c509 irq=10 # options at1700 io=0x260 irq=10 # options smc-ultra io=0x200 irq=10 # options wd io=0x300 irq=10 # options smc9194 io=0x200 irq=10 ifport=0 # options e2100 io=0x300 irq=10 mem=0xd0000 xcvr=0 # options depca io=0x200 irq=7 # options ewrk3 io=0x300 irq=10 # options eexpress io=0x300 irq=10 # options hp-plus io=0x300 irq=10 # options hp io=0x300 irq=10 # options hp100 hp100_port=0x380 # options apricot io=0x300 irq=10 # options ac3200 io=0x300 irq=10 mem=0xd0000 # options de620 io=0x378 irq=7 bnc=1 # options ibmtr io=0xa20 # options arcnet io=0x300 irq=10 shmem=0xd0000 # options plip io=0x378 irq=7 # options eepro io=0x260 irq=10 mem=0x6000 # options eth16i io=0x2a0 irq=10 # options fmv18x io=0x220 irq=10 # options ni52 io=0x360 irq=9 memstart=0xd0000 memend=0xd4000 # options bttv pll=1 radio=0 card=0 # options tuner type=0 # options msp3400 once=1 simple=1 # install bttv /sbin/modprobe --ignore-install bttv && { /sbin/modprobe -k tuner; /sbin/modprobe -k msp3400; } # install dummy0 /sbin/modprobe -o dummy0 --ignore-install dummy install dummy1 /sbin/modprobe -o dummy1 --ignore-install dummy ######################################################################## # cipe section ######################################################################## alias cipcb0 cipcb alias cipcb1 cipcb options cipcb cipe_debug=0 ######################################################################## # block dev aliases ######################################################################## alias block-major-1 rd alias block-major-2 floppy install block-major-3 /bin/true alias block-major-7 loop alias block-major-8 sd_mod alias block-major-11 sr_mod alias block-major-13 xd alias block-major-15 cdu31a alias block-major-16 gscd alias block-major-17 optcd alias block-major-18 sjcd alias block-major-20 mcdx install block-major-22 /bin/true alias block-major-23 mcd alias block-major-24 sonycd535 alias block-major-25 sbpcd alias block-major-26 sbpcd alias block-major-27 sbpcd alias block-major-28 sbpcd alias block-major-29 aztcd alias block-major-32 cm206 install block-major-33 /bin/true install block-major-34 /bin/true # network block device install block-major-43 /bin/true alias block-major-45 pd alias block-major-46 pcd alias block-major-47 pf alias block-major-117 evms ######################################################################## # char dev aliases ######################################################################## alias char-major-6 lp alias char-major-9 st alias char-major-10-130 softdog install char-major-10-134 /bin/true install char-major-10-135 /bin/true alias char-major-10-175 agpgart alias char-major-10-181 toshiba alias char-major-10-250 sonypi options sonypi minor=250 install char-major-15 /bin/true alias char-major-19 cyclades alias char-major-20 cyclades alias char-major-21 sg alias char-major-27 ftape install char-major-29 /bin/true alias char-major-36 netlink_dev # alias char-major-43 hisax # alias char-major-44 hisax # alias char-major-45 hisax install char-major-43 /bin/true install char-major-44 /bin/true install char-major-45 /bin/true alias char-major-48 riscom8 alias char-major-49 riscom8 alias char-major-67 coda alias char-major-75 specialix alias char-major-76 specialix alias char-major-81 videodev install char-major-81-0 /bin/true install char-major-81-1 /bin/true install char-major-81-2 /bin/true install char-major-81-3 /bin/true alias char-major-83 vtx options vtx quiet=1 alias char-major-89 i2c-dev alias char-major-96 pt alias char-major-97 pg alias char-major-107 3dfx alias char-major-109 lvm-mod # remove this if sound is configured install char-major-116 /bin/true ######################################################################## # ppp over ethernet # the kernel 2.2 uses pppox # the kernel 2.4 uses pppoe ######################################################################## alias char-major-108 ppp_generic alias char-major-144 pppoe alias net-pf-24 pppoe ######################################################################## # IrDA ######################################################################## alias char-major-161 ircomm-tty alias char-major-162 raw ######################################################################## # USB ######################################################################## install char-major-166 /bin/true ######################################################################## # Moxa Multiport Serial Boards ######################################################################## alias char-major-172 moxa alias char-major-173 moxa # options moxa type=2,,, baseaddr=0xdc000,,, numports=8,,, alias char-major-174 mxser alias char-major-175 mxser # options mxser ioaddr=0x180 #alias char-major-180 usbcore alias InterMezzo intermezzo alias char-major-185 intermezzo alias char-major-188 usbserial alias char-major-195* nvidia alias char-major-206 osst alias char-major-212 /bin/true alias binfmt-204 binfmt_aout alias binfmt-263 binfmt_aout alias binfmt-264 binfmt_aout alias binfmt-267 binfmt_aout alias binfmt-0064 binfmt_aout alias binfmt-0008 binfmt_aout alias iso9660 isofs alias tty-ldisc-1 slip alias tty-ldisc-2 serio alias tty-ldisc-5 mkiss # alias tty-ldisc-7 6pack install tty-ldisc-7 /bin/true # IrDA alias tty-ldisc-11 irtty-sir # alias ax0 mkiss install ax0 /bin/true # alias sp0 6pack install sp0 /bin/true alias slip0 slip alias sl0 slip alias slip1 slip alias sl1 slip ######################################################################## # the kernel 2.2 uses ppp.o as ppp driver, # the kernel 2.4 uses ppp_generic.o ######################################################################## alias ppp0 ppp_generic alias ppp1 ppp_generic alias tty-ldisc-3 ppp_async alias plip0 plip alias plip1 plip # Tunnel interfaces alias sit0 ipv6 alias gre0 ip_gre alias ipip0 ipip alias ppp-compress-18 ppp_mppe alias ppp-compress-21 bsd_comp alias ppp-compress-24 ppp_deflate alias ppp-compress-26 ppp_deflate alias net-pf-1 unix alias net-pf-3 ax25 # install net-pf-3 /bin/true alias net-pf-4 ipx # install net-pf-4 /bin/true alias net-pf-5 appletalk # install net-pf-5 /bin/true alias net-pf-6 netrom # install net-pf-6 /bin/true alias net-pf-10 ipv6 # install net-pf-10 /bin/true alias net-pf-11 rose # install net-pf-11 /bin/true alias net-pf-15 af_key alias net-pf-17 af_packet alias net-pf-31 bluez alias bt-proto-0 l2cap alias bt-proto-2 sco alias bt-proto-3 rfcomm alias bt-proto-4 bnep alias md-personality-1 linear alias md-personality-2 raid0 alias md-personality-3 raid1 alias md-personality-4 raid5 alias md-personality-7 multipath alias tap0 ethertap alias tap1 ethertap alias tap2 ethertap alias tap3 ethertap alias tap4 ethertap alias tap5 ethertap alias tap6 ethertap alias tap7 ethertap alias tap8 ethertap alias tap9 ethertap alias tap10 ethertap alias tap11 ethertap alias tap12 ethertap alias tap13 ethertap alias tap14 ethertap alias tap15 ethertap alias xfrm-type-2-50 esp4 alias xfrm-type-2-51 ah4 alias xfrm-type-2-108 ipcomp alias xfrm-type-10-50 esp6 alias xfrm-type-10-51 ah6 alias xfrm-type-10-108 ipcomp6 # don't try to reset isa-pnp cards on startup options isa-pnp isapnp_reset=0 # end of common part for modprobe.conf # begin of x86_64 part for modprobe.conf alias char-major-4 serial alias char-major-5 serial alias parport_lowlevel parport_pc # options parport_pc io=0x378 irq=none,none # If you have multiple parallel ports, specify them this way: # options parport_pc io=0x378,0x278 irq=none,none # end of x86_64 part for modprobe.conf # please keep this at the end and add local modifications to modules.conf.local include /etc/modprobe.conf.local ###BEGINPP include /etc/modprobe.conf.pp ###ENDPP

eisi1 · Answer

'Additional test failed: Even if 1st path sda (HBA0-SPA0) is dead, reboot fails'While testing ownership issue, we made simple test: Blade was scratchinstalled on SPA0-HBA0 single path. Later, all additional paths werebinded correctly. If this first path over which blade was scratchinstalled is dead even other 3 paths are in alive/active state, rebootof the blade fails.

PowerPath

Powerpath 5.0.0-157 and SLES9

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