BRRABill's Field Report With XenServer
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Snaps are not part of the "amount I intended to allocated with the main disks." Snaps are extra on top of that.
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@scottalanmiller said:
Snaps are not part of the "amount I intended to allocated with the main disks." Snaps are extra on top of that.
Then why list it in the allocated pool?
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@Dashrender said:
@scottalanmiller said:
Snaps are not part of the "amount I intended to allocated with the main disks." Snaps are extra on top of that.
Then why list it in the allocated pool?
Because it IS allocated and using space. It has to be shown.
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@scottalanmiller said:
@Dashrender said:
@scottalanmiller said:
Snaps are not part of the "amount I intended to allocated with the main disks." Snaps are extra on top of that.
Then why list it in the allocated pool?
Because it IS allocated and using space. It has to be shown.
where is it using 700 GB? it can't be - I simply don't have 700 for it to be using.
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@Dashrender said:
where is it using 700 GB? it can't be - I simply don't have 700 for it to be using.
That's the max size it could ever be. A duplicate of the amount for the drive it is snapshotting. (Is that a word?)
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@Dashrender said:
@scottalanmiller said:
@Dashrender said:
@scottalanmiller said:
Snaps are not part of the "amount I intended to allocated with the main disks." Snaps are extra on top of that.
Then why list it in the allocated pool?
Because it IS allocated and using space. It has to be shown.
where is it using 700 GB? it can't be - I simply don't have 700 for it to be using.
It's not, that's thin provisioning, isn't it?
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@BRRABill said:
@Dashrender said:
where is it using 700 GB? it can't be - I simply don't have 700 for it to be using.
That's the max size it could ever be. A duplicate of the amount for the drive it is snapshotting. (Is that a word?)
Yes
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Both yes, that is what you are seeing and yes, that is a word.
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@scottalanmiller said:
@BRRABill said:
@Dashrender said:
where is it using 700 GB? it can't be - I simply don't have 700 for it to be using.
That's the max size it could ever be. A duplicate of the amount for the drive it is snapshotting. (Is that a word?)
Yes
I used the layman terms. Because I am, well, you know...
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Does XS support reclaiming/compacting space in a virtual disk?
I know it says it does not support shrinking a virtual disk, but can you reclaim (compact) that space?
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@BRRABill said:
Does XS support reclaiming/compacting space in a virtual disk?
I know it says it does not support shrinking a virtual disk, but can you reclaim (compact) that space?
am I mising something? Isn't shrinking the same as reclaiming?
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@Dashrender said:
am I mising something? Isn't shrinking the same as reclaiming?
I don't think so, but I could be wrong.
Reclaiming is adjusting the size of the virtual disk on the host to accomodate for deleted data.
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@BRRABill said:
@Dashrender said:
am I mising something? Isn't shrinking the same as reclaiming?
I don't think so, but I could be wrong.
Reclaiming is adjusting the size of the virtual disk on the host to accomodate for deleted data.
And shrinking is?
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@Dashrender said:
And shrinking is?
Actually changing the provisioned size of the virtual disk.
So if you set it up for 50GB, you could expand to 60GB, but not shrink to 40GB.
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So you're asking if, assuming a thin provisioned disk of 50 GB has 40 GB in use, then you delete 20 GB, leaving you with 40 GB actual file.. is there a way to release that now free 20 GB space, reclaiming the RS space.
good question.
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@Dashrender said:
So you're asking if, assuming a thin provisioned disk of 50 GB has 40 GB in use, then you delete 20 GB, leaving you with 40 GB actual file.. is there a way to release that now free 20 GB space, reclaiming the RS space.
good question.
Right. You can do it in Hyper-V (I think). There is a COMPACT option.
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@BRRABill said:
@Dashrender said:
So you're asking if, assuming a thin provisioned disk of 50 GB has 40 GB in use, then you delete 20 GB, leaving you with 40 GB actual file.. is there a way to release that now free 20 GB space, reclaiming the RS space.
good question.
Right. You can do it in Hyper-V (I think). There is a COMPACT option.
yeah I'm not surprised.. you can do the same with SQL and Exchange DBs, though it normally (if not completely) requires taking those systems offline.
when i needed to to this for SQL in the past, I just do a backup and restore.. was faster than a compact
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I found it interesting that XS stores the virtual hard drives in VHD format.
Opens right up in Hyper-V/Windows.
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@Dashrender said:
yeah I'm not surprised.. you can do the same with SQL and Exchange DBs, though it normally (if not completely) requires taking those systems offline.
Yeah the system/VHD definitely has to be offline.
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I have decided to give XenServer a try in the production environment.
I installed it for reals on our new server.
Had another install question...
If you have more than one partition and select both, it says it will span the storage repository across them. Is that ever a good idea?In my situation here, I have a SSD array and a SATA array, so I assume spanning them would be a terrible idea.
