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тАО05-25-2009 10:09 AM
тАО05-25-2009 10:09 AM
eva4000 and activating multipath on existing LVM ext3
Hello,
I have actually a DL385 with one HBA connected on an EVA4000. (2 controllers inside)
I have an LVM ext3 volume which is using devices without mapper (ex: /dev/sdi1 , /dev/sdj1 ..)
I see this kind of messages:
Found duplicate PV 37VGzhsNZsJzwSYHaTP9dmlLcDLG8HRa: using /dev/sdi1 not /dev/sdf1
because I see devices from the 2 controllers.
now I want to implement DM-Multipath.
I have installed multipath package ,but how can I say to lvm to use multipath devices instead of /dev/sdi1 ....
I don't want to break anything.
thank you in advance for your help
Best Regards
Patrice
I have actually a DL385 with one HBA connected on an EVA4000. (2 controllers inside)
I have an LVM ext3 volume which is using devices without mapper (ex: /dev/sdi1 , /dev/sdj1 ..)
I see this kind of messages:
Found duplicate PV 37VGzhsNZsJzwSYHaTP9dmlLcDLG8HRa: using /dev/sdi1 not /dev/sdf1
because I see devices from the 2 controllers.
now I want to implement DM-Multipath.
I have installed multipath package ,but how can I say to lvm to use multipath devices instead of /dev/sdi1 ....
I don't want to break anything.
thank you in advance for your help
Best Regards
Patrice
3 REPLIES 3
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тАО05-27-2009 07:18 AM
тАО05-27-2009 07:18 AM
Re: eva4000 and activating multipath on existing LVM ext3
I have googled around and found some things to do , can someone tell me if I will do it right:
at this moment I have multipath installed but the physical devices used in my lvm are still /dev/sdi, /dev/sdj .... , and I have /dev/mapper/LVM_GRP1 which exist.
- I will put a filter in my lvm.conf: filter = [ "a|/dev/mapper/LVM_.*|", "r|.*|" ]
- umount my lvm volumes
- pvscan
- mount my partitions using /dev/mapper/LVM_GRP1
do I forget something ?
at this moment I have multipath installed but the physical devices used in my lvm are still /dev/sdi, /dev/sdj .... , and I have /dev/mapper/LVM_GRP1 which exist.
- I will put a filter in my lvm.conf: filter = [ "a|/dev/mapper/LVM_.*|", "r|.*|" ]
- umount my lvm volumes
- pvscan
- mount my partitions using /dev/mapper/LVM_GRP1
do I forget something ?
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тАО05-27-2009 10:30 AM
тАО05-27-2009 10:30 AM
Re: eva4000 and activating multipath on existing LVM ext3
Shalom,
Multi-path is built into the OS.
If you present two paths, you are done.
What package specifically did you install?
SEP
Multi-path is built into the OS.
If you present two paths, you are done.
What package specifically did you install?
SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
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тАО05-27-2009 11:27 PM
тАО05-27-2009 11:27 PM
Re: eva4000 and activating multipath on existing LVM ext3
Hi Steven,
The system (redhat 5) was installed without the package device-mapper-multipath...rpm
I installed it a few days ago, but I am not really sure my LVM volumes use multipath devices.
Do you know what should I verify ?
Thank you !!
The system (redhat 5) was installed without the package device-mapper-multipath...rpm
I installed it a few days ago, but I am not really sure my LVM volumes use multipath devices.
Do you know what should I verify ?
Thank you !!
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