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1752
July 26th, 2015 20:00
How to use ScaleIO Snapshot to roll back
In the ScaleIO User Guide, teaching me how to create, map and remove a Snapshot. But how could I use ScaleIO Snapshot volume to roll back?Thank all guys first.
Here is the volume that i define in ScaleIO system.
ScaleIO-10-204-28-174:~ # scli --query_all_volume
Query-all-volumes returned 2 volumes
Protection Domain db363f5b00000000 Name: Storage
Storage Pool 6290843500000000 Name: HDD
Volume ID: 4b8f428100000000 Name: ScaleIO_Volume_1 Size: 304.0 GB (311296 MB) Mapped to all SDC Thick-provisioned
Volume ID: 4b8f428200000001 Name: SIO_Snap_1 Size: 304.0 GB (311296 MB) Mapped to all SDC Snapshot of ScaleIO_Volume_1
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RafaelNovo
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July 27th, 2015 06:00
It does not have a rollback option.
littleboy1
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July 27th, 2015 19:00
sure？So it just copy the volume? Can it do some other things? For example?
tomer__engineer
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July 28th, 2015 01:00
Snapshot is a volume just like any other with read/write permissions, you can map it your SDCs and work with it same as you do with volumes. You can use it instead of / in parallel to the parent volume, just keep in mind that any new data written to the parent volume after you took the snapshot, does not exist in the snapshot.
littleboy1
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July 28th, 2015 18:00
That doesn't make any sense.It can't roll back, why should i define it. What does those data in the snapshot can do? Mapping the snapshot to SDCs better than Mapping the parent volume to SDCs? I can't figure out why doing this,can you help me ? Thanks very much.
littleboy1
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July 28th, 2015 19:00
You are right, but the problem is that ScaleIO can use the backup（snap) do something? That means if the database have a problem, I could find the backup in the backup server. Then what should i do? Find the data and manual to recovery the data to parent volume. Or map the snap to database？I think ScaleIO could be using the snap to recovery the parent volume. That just my personal opinion.
RafaelNovo
92 Posts
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July 28th, 2015 19:00
For example: you can create a snap of an existing volume and use it for a different purpose. For example, a LUN with a database that you can mount to a Dev environment, or a LUN with a large filesystem that you can mount on a backup server for backup.