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тАО09-29-2009 10:44 AM
тАО09-29-2009 10:44 AM
Can anyone give me a hand with this? Thanks.
Joe
Solved! Go to Solution.
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тАО09-29-2009 01:08 PM
тАО09-29-2009 01:08 PM
Re: Connecting Red Hat 5.3 to EVA 8100 vdisk
Here I can find:
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1025366
http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=960206
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тАО09-29-2009 10:59 PM
тАО09-29-2009 10:59 PM
SolutionPlease find this link, hope it will help you.
http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=18964&prodSeriesId=3559651&swItem=co-71367-1&prodNameId=3559652&swEnvOID=4035&swLang=13&taskId=135&mode=3
Zalloum
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тАО09-30-2009 12:38 PM
тАО09-30-2009 12:38 PM
Re: Connecting Red Hat 5.3 to EVA 8100 vdisk
This doc should also be useful:
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01080211/c01080211.pdf
Cheers,
Rob
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тАО10-01-2009 09:27 AM
тАО10-01-2009 09:27 AM
Re: Connecting Red Hat 5.3 to EVA 8100 vdisk
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тАО10-01-2009 11:19 AM
тАО10-01-2009 11:19 AM
Re: Connecting Red Hat 5.3 to EVA 8100 vdisk
Cheers,
Rob
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тАО10-01-2009 11:21 AM
тАО10-01-2009 11:21 AM
Re: Connecting Red Hat 5.3 to EVA 8100 vdisk
For what it's worth, we have found the RH native multipathing to be very solid and we are using an EVA 8100 with RHEL5. There are a lot of underlying devices but if you use friendly names configured in /etc/mutlipath.conf it's easier to deal with and you don't have to worry about devices that change across reboots.
The steps that I use:
1. create vdisk on EVA
2. present it to a server
3. Copy and paste the WWN of the new vdisk into /etc/multipath.conf on the server (see sample below).
4. On the server, scan for the new disks (this is a 2 port Qlogic card):
echo "- - -" > /sys/class/scsi_host/host0/scan
echo "- - -" > /sys/class/scsi_host/host1/scan
5. run multipath -ll to see the new disks and multipath device
6. mkfs on the multipath device
7. mount the filesystem
hope this helps.
-----------------------
sample multipath.conf:
multipaths {
multipath {
wwid 3600508b40006af2c0000f000033e0000
alias data2
}
}
devnode_blacklist {
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^hd[a-z]"
devnode "^cciss!c[0-9]d[0-9]*"
}
defaults {
udev_dir /dev
polling_interval 10
selector "round-robin 0"
path_grouping_policy failover
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
prio_callout "/bin/true"
path_checker tur
rr_min_io 100
rr_weight uniform
failback immediate
no_path_retry 12
user_friendly_names yes
}
devices {
device {
vendor "HP|COMPAQ"
product "HSV1[01]1 \(C\)COMPAQ|HSV2[01]0"
path_grouping_policy group_by_prio
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
path_checker tur
path_selector "round-robin 0"
prio_callout "/sbin/mpath_prio_alua /dev/%n"
rr_weight uniform
failback immediate
hardware_handler "0"
no_path_retry 12
}
device {
vendor "HP"
product "OPEN-.*"
path_grouping_policy multibus
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
path_selector "round-robin 0"
rr_weight uniform
prio_callout "/bin/true"
path_checker tur
hardware_handler "0"
failback immediate
no_path_retry 12
}
}
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тАО10-05-2009 06:30 AM
тАО10-05-2009 06:30 AM
Re: Connecting Red Hat 5.3 to EVA 8100 vdisk
So I have followed your instructions here. When I run multipath -ll, this is the output:
mpath1 (36001438002a55d780000800000590000) dm-6 HP,HSV210
[size=500G][features=1 queue_if_no_path][hwhandler=0][rw]
\_ round-robin 0 [prio=200][active]
\_ 3:0:0:1 sdb 8:16 [active][ready]
\_ 3:0:2:1 sdd 8:48 [active][ready]
\_ 4:0:0:1 sdf 8:80 [active][ready]
\_ 4:0:1:1 sdg 8:96 [active][ready]
\_ round-robin 0 [prio=30][enabled]
\_ 3:0:1:1 sdc 8:32 [active][ready]
\_ 3:0:3:1 sde 8:64 [active][ready]
\_ 4:0:2:1 sdh 8:112 [active][ready]
Do I run mkfs on "mpath" as the device? What I was doing before was:
mkfs.ext3 /dev/mapper/mpath1
It would build a filesystem with no complaints. I could even then mount it at /mnt as a test.
When I put it in the /etc/fstab for mounting at boot time, it will hang in the boot for not being able to recognize the device. It's almost like somehow the multipath functions have a service that seems to start AFTER mounting at boot, but I just don't know.
So that's where I am, I know if I mkfs the mpath1 device, it'll hang me at boot and I'll need to go into rescue mode to remove the line from fstab.
Any ideas?
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тАО10-05-2009 10:56 AM
тАО10-05-2009 10:56 AM
Re: Connecting Red Hat 5.3 to EVA 8100 vdisk
If the suggestion below isn't the problem then post the message you receive at boot time.
In /etc/fstab it should look like:
/dev/mapper/mpath1 /data ext3 defaults 1 2
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тАО10-05-2009 11:00 AM
тАО10-05-2009 11:00 AM