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1answer
78 views

Proper way to activate LVM partition on multipath during the boot

I have Debian 9 with successfully configured iSCSI and multipath: # multipath -ll /dev/mapper/mpathb mpathb (222c60001556480c6) dm-2 Promise,Vess R2600xi size=10T features='1 ...
0
votes
0answers
33 views

Extending a multipath'd /dev/mapper device that isn't listed as an LVM anywhere

RHEL 5. I have a host that uses an EQL array for storage with multipath on the OS. I'm trying to extend the disk: /dev/mapper/prdbkpp1 1.3T 1.3T 20G 99% /backup I rescanned and resized via ...
0
votes
2answers
11k views

Device /dev/mapper/mpathb1 excluded by a filter

On CentOS 7 trying to create physical volume using mpath device. But it throwing this error message. How to resolve this issues? pvcreate /dev/mapper/mpathb1 Device /dev/mapper/mpathb1 excluded ...
5
votes
2answers
971 views

Understanding multipath and mountpoints

I was just introduced to multipathing in our production environment and had never heard of the concept prior. After some digging I think I'm starting to get a handle on how the concept works in theory ...
6
votes
1answer
13k views

“Found duplicate PV”

SERVER:~ # pvs Found duplicate PV Wb0b2UTCKtpUtSki0k2NnIB24qNj4CEP: using /dev/mapper/36005076304ffc2500000000000004903 not /dev/mapper/36005076304ffc2990000000000004903 PV ...
2
votes
1answer
2k views

Multipath to a logical volume in a staging VM

How do I configure multipath in testing VM (purpose is purely academical)? I made new logical volume, modified multipath.conf to be as follows: defaults { udev_dir /dev ...