SR usage on multiple pools
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A SR cannot be attached to multiple pools at once.
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@olivierlambert but it attached) bug here?
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If you plug a block device on another pool it will lead to corruption because one pool cannot know where the other pool is having host writing to which VM disk.
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@olivierlambert need to block plug operations then.
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yep. VM i migrated from old SR now won't start. Looks VDI's was totaly corrupted at moment of connection.
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@olivierlambert nvm restored it by somehow.
Double mount not a problem for NFS storage?
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@Tristis-Oris said in SR usage on multiple pools:
Double mount not a problem for NFS storage?
You can create an NFS SR on each pool using the same destination device / path. It will create a unique subdirectory for each pool, so no issues with corruption because each pool has its own unique SR.
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@Danp so i need to migrate VDIs anyway? inside same SR but to another dirrectory.
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@Tristis-Oris Yes, but it isn't the same SR. It is multiple SRs, each in their own subdirectory.
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@Danp yes got it. i'm about physical layer. thanks.
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Yes, it's a "definition" question/problem: a SR is the exact place where you store your virtual disk images. On NFS, it's a folder named after the UUID of the SR. As Dan said, if you connect to the same NFS folder, it will create a new folder for each new SR inside. So even if it's the same physical device/NFS share, there's many SRs on it.
For a block based SR, it's different: if you pass a LUN (in ISCSI for example), it will attach it and warn you: either you want to re-attach the previously existing SR (UUID etc) either you erase it completely to start from scratch. There's no "folders" on a block space like a LUN, so it's different.
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