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тАО03-17-2008 02:45 AM
тАО03-17-2008 02:45 AM
MSA1000 in a RHEL 5.1 multipath environment
Hello
i have 6 bl460 in two c7000 encl.
With 2 SAN Switches an 2 MSA1000 Storage Systems.
I configure Multipathio with only with the RHEL5.1 software. No HP software is used.
my /etc/multipath.conf (some lines):
blacklist {
devnode "*"
}
blacklist_exceptions {
devnode "^(sd|dm-)*"
}
#blacklist {
# devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
#devnode "^hd[a-z]"
#}
defaults {
user_friendly_names yes
}
multipaths {
multipath {
wwid 36001438000091540a022878107d10000
alias rzalun1
path_grouping_policy multibus
path_checker tur
path_selector "round-robin 0"
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
failback immediate
}
multipath {
wwid 36001438000091540a43289e8f2120000
alias rzalun2
path_grouping_policy multibus
path_checker tur
path_selector "round-robin 0"
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
failback immediate
}
.....
devices {
device {
vendor "COMPAQ "
product "MSA1000 "
path_grouping_policy multibus
path_checker tur
rr_weight priorities
}
}
multipath -ll (some lines):
rzalun6 (36001438000091540a153874bfe000004) dm-11 HP,MSA VOLUME
[size=279G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
\_ 1:0:1:6 sdaa 65:160 [active][ready]
\_ 0:0:1:6 sdm 8:192 [active][ready]
params = 0 0 1 1 round-robin 0 2 1 8:176 1000 65:144 1000
status = 1 0 0 1 1 A 0 2 0 8:176 A 0 65:144 A 0
sdl: mask = 0x8
sdl: getprio = NULL (internal default)
sdl: prio = 1
sdz: mask = 0x8
sdz: getprio = NULL (internal default)
sdz: prio = 1
And sometimes i get the following error-lines in /var/log/messages:
Mar 16 04:02:03 sigraca01db syslogd 1.4.1: restart.
Mar 16 09:20:59 sigraca01db multipathd: sdaa: readsector0 checker reports path is down
Mar 16 09:20:59 sigraca01db multipathd: checker failed path 65:160 in map rzalun6
Mar 16 09:20:59 sigraca01db kernel: device-mapper: multipath: Failing path 65:160.
Mar 16 09:20:59 sigraca01db multipathd: rzalun6: remaining active paths: 1
Mar 16 09:20:59 sigraca01db multipathd: sdm: readsector0 checker reports path is down
Mar 16 09:20:59 sigraca01db multipathd: checker failed path 8:192 in map rzalun6
Mar 16 09:20:59 sigraca01db kernel: device-mapper: multipath: Failing path 8:192.
Mar 16 09:20:59 sigraca01db multipathd: rzalun6: remaining active paths: 0
Mar 16 09:21:04 sigraca01db multipathd: sdaa: readsector0 checker reports path is up
Mar 16 09:21:04 sigraca01db multipathd: 65:160: reinstated
Mar 16 09:21:04 sigraca01db multipathd: rzalun6: remaining active paths: 1
Mar 16 09:21:04 sigraca01db multipathd: sdm: readsector0 checker reports path is up
Mar 16 09:21:04 sigraca01db multipathd: 8:192: reinstated
Mar 16 09:21:04 sigraca01db multipathd: rzalun6: remaining active paths: 2
Mar 16 11:45:05 sigraca01db auditd[6371]: Audit daemon rotating log files
Mar 16 14:30:38 sigraca01db last message repeated 261 times
Mar 16 14:30:39 sigraca01db last message repeated 18 times
Mar 17 07:30:30 sigraca01db multipathd: sdd: readsector0 checker reports path is down
Mar 17 07:30:30 sigraca01db multipathd: checker failed path 8:48 in map rzclun4
Mar 17 07:30:30 sigraca01db multipathd: rzclun4: remaining active paths: 1
Mar 17 07:30:30 sigraca01db kernel: device-mapper: multipath: Failing path 8:48.
Mar 17 07:30:35 sigraca01db multipathd: sdd: readsector0 checker reports path is up
Mar 17 07:30:35 sigraca01db multipathd: 8:48: reinstated
Mar 17 07:30:35 sigraca01db multipathd: rzclun4: remaining active paths: 2
Any idea ?
Thanks
Ralf
i have 6 bl460 in two c7000 encl.
With 2 SAN Switches an 2 MSA1000 Storage Systems.
I configure Multipathio with only with the RHEL5.1 software. No HP software is used.
my /etc/multipath.conf (some lines):
blacklist {
devnode "*"
}
blacklist_exceptions {
devnode "^(sd|dm-)*"
}
#blacklist {
# devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
#devnode "^hd[a-z]"
#}
defaults {
user_friendly_names yes
}
multipaths {
multipath {
wwid 36001438000091540a022878107d10000
alias rzalun1
path_grouping_policy multibus
path_checker tur
path_selector "round-robin 0"
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
failback immediate
}
multipath {
wwid 36001438000091540a43289e8f2120000
alias rzalun2
path_grouping_policy multibus
path_checker tur
path_selector "round-robin 0"
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
failback immediate
}
.....
devices {
device {
vendor "COMPAQ "
product "MSA1000 "
path_grouping_policy multibus
path_checker tur
rr_weight priorities
}
}
multipath -ll (some lines):
rzalun6 (36001438000091540a153874bfe000004) dm-11 HP,MSA VOLUME
[size=279G][features=0][hwhandler=0]
\_ round-robin 0 [prio=2][active]
\_ 1:0:1:6 sdaa 65:160 [active][ready]
\_ 0:0:1:6 sdm 8:192 [active][ready]
params = 0 0 1 1 round-robin 0 2 1 8:176 1000 65:144 1000
status = 1 0 0 1 1 A 0 2 0 8:176 A 0 65:144 A 0
sdl: mask = 0x8
sdl: getprio = NULL (internal default)
sdl: prio = 1
sdz: mask = 0x8
sdz: getprio = NULL (internal default)
sdz: prio = 1
And sometimes i get the following error-lines in /var/log/messages:
Mar 16 04:02:03 sigraca01db syslogd 1.4.1: restart.
Mar 16 09:20:59 sigraca01db multipathd: sdaa: readsector0 checker reports path is down
Mar 16 09:20:59 sigraca01db multipathd: checker failed path 65:160 in map rzalun6
Mar 16 09:20:59 sigraca01db kernel: device-mapper: multipath: Failing path 65:160.
Mar 16 09:20:59 sigraca01db multipathd: rzalun6: remaining active paths: 1
Mar 16 09:20:59 sigraca01db multipathd: sdm: readsector0 checker reports path is down
Mar 16 09:20:59 sigraca01db multipathd: checker failed path 8:192 in map rzalun6
Mar 16 09:20:59 sigraca01db kernel: device-mapper: multipath: Failing path 8:192.
Mar 16 09:20:59 sigraca01db multipathd: rzalun6: remaining active paths: 0
Mar 16 09:21:04 sigraca01db multipathd: sdaa: readsector0 checker reports path is up
Mar 16 09:21:04 sigraca01db multipathd: 65:160: reinstated
Mar 16 09:21:04 sigraca01db multipathd: rzalun6: remaining active paths: 1
Mar 16 09:21:04 sigraca01db multipathd: sdm: readsector0 checker reports path is up
Mar 16 09:21:04 sigraca01db multipathd: 8:192: reinstated
Mar 16 09:21:04 sigraca01db multipathd: rzalun6: remaining active paths: 2
Mar 16 11:45:05 sigraca01db auditd[6371]: Audit daemon rotating log files
Mar 16 14:30:38 sigraca01db last message repeated 261 times
Mar 16 14:30:39 sigraca01db last message repeated 18 times
Mar 17 07:30:30 sigraca01db multipathd: sdd: readsector0 checker reports path is down
Mar 17 07:30:30 sigraca01db multipathd: checker failed path 8:48 in map rzclun4
Mar 17 07:30:30 sigraca01db multipathd: rzclun4: remaining active paths: 1
Mar 17 07:30:30 sigraca01db kernel: device-mapper: multipath: Failing path 8:48.
Mar 17 07:30:35 sigraca01db multipathd: sdd: readsector0 checker reports path is up
Mar 17 07:30:35 sigraca01db multipathd: 8:48: reinstated
Mar 17 07:30:35 sigraca01db multipathd: rzclun4: remaining active paths: 2
Any idea ?
Thanks
Ralf
2 REPLIES 2
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тАО03-17-2008 09:44 AM
тАО03-17-2008 09:44 AM
Re: MSA1000 in a RHEL 5.1 multipath environment
Hi Ralf,
The MSA1000 does not support RHEL MPIO drivers.
Also, be sure you have the MSA1000 in active/active mode (with the appropriate FW release to support it).
What multipath solutions you can use depend on the OS (32-bit or 64bit?) and the MSA configuration (active/active or active/passive). Please post this information and I'll tell you what your options are.
Good luck!
The MSA1000 does not support RHEL MPIO drivers.
Also, be sure you have the MSA1000 in active/active mode (with the appropriate FW release to support it).
What multipath solutions you can use depend on the OS (32-bit or 64bit?) and the MSA configuration (active/active or active/passive). Please post this information and I'll tell you what your options are.
Good luck!
No matter where you go, there you are.
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тАО10-28-2009 06:57 PM
тАО10-28-2009 06:57 PM
Re: MSA1000 in a RHEL 5.1 multipath environment
Hiya Ralf, Please let me know if you are facing issues with RHEL 5.1 DM-multipath.
cheers
cheers
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