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| Peer Motion Source Disk becomes unusable https://3parug.com/viewtopic.php?f=18&t=2603 |
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| Author: | c84nks [ Mon Jul 31, 2017 9:51 am ] |
| Post subject: | Peer Motion Source Disk becomes unusable |
Hi I recently shutdown a SAN booted W12K server and Peer Motion'd the LUNS to another array to migrate it. All the zoning and 3PAR hosts were reconfigured to the destination array but for operational reasons the work was abandoned and I recreated the host and zoning back on the PM source array and re-exported the LUNs but they would not be seen by the original host. They weren't "read only" the host ports were seen on the array when a boot was attempted so the zoning was correct. After lots of testing the only way to fix it was to take a "Physical Copy" of all the LUNs and export these ?? This implies that once a LUN has been the source of a PM copy something changes in the metadata. Does anyone have any idea what is going on here.... NB - the host is configured through Virtual Connect using HP OneView Thanks in advance. |
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| Author: | MammaGutt [ Tue Aug 01, 2017 2:24 pm ] |
| Post subject: | Re: Peer Motion Source Disk becomes unusable |
If the Peer Motion task was created and started, the volume is presented to the targets peer ports (so it will get writes that may occur during migration). I would assume that when the volume is in that state you are not able to do anything with that volume until the Peer Motion task is completed/finished. Anything else would leave you with the possiblity of losing writes to the volume. |
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| Author: | aberus [ Wed Aug 16, 2017 5:37 am ] |
| Post subject: | Re: Peer Motion Source Disk becomes unusable |
Out of curiosity have you checked to see if your target port group ID on the VLUN has changed? SSH into the array and run "showvlun -a -v <vvname>" The number at the end of the row is the TPGID, if this is 1 then this is not your problem, if it is 3 or higher then you need to change your TPGID to 1. |
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