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Posted to dev@cloudstack.apache.org by Mike Tutkowski <mi...@solidfire.com> on 2013/10/03 19:47:48 UTC
XenServer Question
Hi,
On one of my SRs, I see the following information:
100.2 GB used of 200 GB total (100 GB allocated)
Can someone explain how 'used' can be larger than 'allocated'?
On storage systems I've worked on before, 'allocated' is generally
synonymous with 'reserved' or 'provisioned'. On these systems, 'used' is
always less than or equal to 'allocated'. Typically 'used' is less than
'allocated' because as 'used' approaches 'allocated', 'allocated' is
expanded (until it runs into 'total').
Thanks!
--
*Mike Tutkowski*
*Senior CloudStack Developer, SolidFire Inc.*
e: mike.tutkowski@solidfire.com
o: 303.746.7302
Advancing the way the world uses the
cloud<http://solidfire.com/solution/overview/?video=play>
*™*
Re: XenServer Question
Posted by Nitin Mehta <Ni...@citrix.com>.
What is your storage over provisioning factor ? Even that could be the
reason.
Regarding allocated vs used capacity I had written a wiki[1] sometime
back. Please see if it helps.
[1]
https://cwiki.apache.org/confluence/display/CLOUDSTACK/Understanding+Dashbo
ard
Thanks,
-Nitin
On 04/10/13 8:08 AM, "benoit lair" <ku...@gmail.com> wrote:
>Effectively, it's very surprising.
>
>I checked my differents storage (local as iscsi sr) on xcp 1.0, xcp 1.1,
>xcp 1.4.90, xcp 1.6, xenserver 6.0 and xenserver 6.2, i observe that i can
>have a 'used' storage more important that the 'allocated' one
>
>I verified connected to my hypervisors shells and verified the data
>displayed in xencenter, the value 'used' is the good one.
>
>However, i can have allocated 200GB on my local SR to one vm (so it's
>provisionning). I can have 33GB 'used' on my local SR, but i have in
>reality less storage available into my vm.
>
>More clearly, if 200GB allocated on one vm, if xencenter says me 33GB are
>used, i can retrieve a vhd file corresponding to my vm of a size of 33GB,
>but when i'm connected to the vm's shell, i don't retrieve my 33gbs of
>storage.
>
>I observe the same phenomenon with my others xenserver hypervisors.
>
>It seems that some metadatas could be present into the vhd file + the real
>vm storage.
>
>
>
>Is there any citrix xenserver specialist in the room to confirm (or not)
>what i said ?
>
>
>Thanks.
>
>Regards, Benoit.
>
>
>2013/10/4 Mike Tutkowski <mi...@solidfire.com>
>
>> Doh! I guess that would have been helpful info. :)
>>
>> It is in XenCenter. If you click on an SR and look at the General tab.
>>
>> http://i.imgur.com/z5F1Ct0.png
>>
>>
>> On Fri, Oct 4, 2013 at 4:34 AM, benoit lair <ku...@gmail.com>
>>wrote:
>>
>> > Hi Mike,
>> >
>> > Where do you see this information ? On the CS dashboard ? Or with
>> > xencenter, listing the sr with the windows gui ?
>> >
>> > Regards, Benoit.
>> >
>> >
>> > 2013/10/3 Mike Tutkowski <mi...@solidfire.com>
>> >
>> > > Hi,
>> > >
>> > > On one of my SRs, I see the following information:
>> > >
>> > > 100.2 GB used of 200 GB total (100 GB allocated)
>> > >
>> > > Can someone explain how 'used' can be larger than 'allocated'?
>> > >
>> > > On storage systems I've worked on before, 'allocated' is generally
>> > > synonymous with 'reserved' or 'provisioned'. On these systems,
>>'used'
>> is
>> > > always less than or equal to 'allocated'. Typically 'used' is less
>>than
>> > > 'allocated' because as 'used' approaches 'allocated', 'allocated' is
>> > > expanded (until it runs into 'total').
>> > >
>> > > Thanks!
>> > >
>> > > --
>> > > *Mike Tutkowski*
>> > > *Senior CloudStack Developer, SolidFire Inc.*
>> > > e: mike.tutkowski@solidfire.com
>> > > o: 303.746.7302
>> > > Advancing the way the world uses the
>> > > cloud<http://solidfire.com/solution/overview/?video=play>
>> > > **
>> > >
>> >
>>
>>
>>
>> --
>> *Mike Tutkowski*
>> *Senior CloudStack Developer, SolidFire Inc.*
>> e: mike.tutkowski@solidfire.com
>> o: 303.746.7302
>> Advancing the way the world uses the
>> cloud<http://solidfire.com/solution/overview/?video=play>
>> **
>>
Re: XenServer Question
Posted by benoit lair <ku...@gmail.com>.
Effectively, it's very surprising.
I checked my differents storage (local as iscsi sr) on xcp 1.0, xcp 1.1,
xcp 1.4.90, xcp 1.6, xenserver 6.0 and xenserver 6.2, i observe that i can
have a 'used' storage more important that the 'allocated' one
I verified connected to my hypervisors shells and verified the data
displayed in xencenter, the value 'used' is the good one.
However, i can have allocated 200GB on my local SR to one vm (so it's
provisionning). I can have 33GB 'used' on my local SR, but i have in
reality less storage available into my vm.
More clearly, if 200GB allocated on one vm, if xencenter says me 33GB are
used, i can retrieve a vhd file corresponding to my vm of a size of 33GB,
but when i'm connected to the vm's shell, i don't retrieve my 33gbs of
storage.
I observe the same phenomenon with my others xenserver hypervisors.
It seems that some metadatas could be present into the vhd file + the real
vm storage.
Is there any citrix xenserver specialist in the room to confirm (or not)
what i said ?
Thanks.
Regards, Benoit.
2013/10/4 Mike Tutkowski <mi...@solidfire.com>
> Doh! I guess that would have been helpful info. :)
>
> It is in XenCenter. If you click on an SR and look at the General tab.
>
> http://i.imgur.com/z5F1Ct0.png
>
>
> On Fri, Oct 4, 2013 at 4:34 AM, benoit lair <ku...@gmail.com> wrote:
>
> > Hi Mike,
> >
> > Where do you see this information ? On the CS dashboard ? Or with
> > xencenter, listing the sr with the windows gui ?
> >
> > Regards, Benoit.
> >
> >
> > 2013/10/3 Mike Tutkowski <mi...@solidfire.com>
> >
> > > Hi,
> > >
> > > On one of my SRs, I see the following information:
> > >
> > > 100.2 GB used of 200 GB total (100 GB allocated)
> > >
> > > Can someone explain how 'used' can be larger than 'allocated'?
> > >
> > > On storage systems I've worked on before, 'allocated' is generally
> > > synonymous with 'reserved' or 'provisioned'. On these systems, 'used'
> is
> > > always less than or equal to 'allocated'. Typically 'used' is less than
> > > 'allocated' because as 'used' approaches 'allocated', 'allocated' is
> > > expanded (until it runs into 'total').
> > >
> > > Thanks!
> > >
> > > --
> > > *Mike Tutkowski*
> > > *Senior CloudStack Developer, SolidFire Inc.*
> > > e: mike.tutkowski@solidfire.com
> > > o: 303.746.7302
> > > Advancing the way the world uses the
> > > cloud<http://solidfire.com/solution/overview/?video=play>
> > > *™*
> > >
> >
>
>
>
> --
> *Mike Tutkowski*
> *Senior CloudStack Developer, SolidFire Inc.*
> e: mike.tutkowski@solidfire.com
> o: 303.746.7302
> Advancing the way the world uses the
> cloud<http://solidfire.com/solution/overview/?video=play>
> *™*
>
Re: XenServer Question
Posted by Mike Tutkowski <mi...@solidfire.com>.
Doh! I guess that would have been helpful info. :)
It is in XenCenter. If you click on an SR and look at the General tab.
http://i.imgur.com/z5F1Ct0.png
On Fri, Oct 4, 2013 at 4:34 AM, benoit lair <ku...@gmail.com> wrote:
> Hi Mike,
>
> Where do you see this information ? On the CS dashboard ? Or with
> xencenter, listing the sr with the windows gui ?
>
> Regards, Benoit.
>
>
> 2013/10/3 Mike Tutkowski <mi...@solidfire.com>
>
> > Hi,
> >
> > On one of my SRs, I see the following information:
> >
> > 100.2 GB used of 200 GB total (100 GB allocated)
> >
> > Can someone explain how 'used' can be larger than 'allocated'?
> >
> > On storage systems I've worked on before, 'allocated' is generally
> > synonymous with 'reserved' or 'provisioned'. On these systems, 'used' is
> > always less than or equal to 'allocated'. Typically 'used' is less than
> > 'allocated' because as 'used' approaches 'allocated', 'allocated' is
> > expanded (until it runs into 'total').
> >
> > Thanks!
> >
> > --
> > *Mike Tutkowski*
> > *Senior CloudStack Developer, SolidFire Inc.*
> > e: mike.tutkowski@solidfire.com
> > o: 303.746.7302
> > Advancing the way the world uses the
> > cloud<http://solidfire.com/solution/overview/?video=play>
> > *™*
> >
>
--
*Mike Tutkowski*
*Senior CloudStack Developer, SolidFire Inc.*
e: mike.tutkowski@solidfire.com
o: 303.746.7302
Advancing the way the world uses the
cloud<http://solidfire.com/solution/overview/?video=play>
*™*
Re: XenServer Question
Posted by benoit lair <ku...@gmail.com>.
Hi Mike,
Where do you see this information ? On the CS dashboard ? Or with
xencenter, listing the sr with the windows gui ?
Regards, Benoit.
2013/10/3 Mike Tutkowski <mi...@solidfire.com>
> Hi,
>
> On one of my SRs, I see the following information:
>
> 100.2 GB used of 200 GB total (100 GB allocated)
>
> Can someone explain how 'used' can be larger than 'allocated'?
>
> On storage systems I've worked on before, 'allocated' is generally
> synonymous with 'reserved' or 'provisioned'. On these systems, 'used' is
> always less than or equal to 'allocated'. Typically 'used' is less than
> 'allocated' because as 'used' approaches 'allocated', 'allocated' is
> expanded (until it runs into 'total').
>
> Thanks!
>
> --
> *Mike Tutkowski*
> *Senior CloudStack Developer, SolidFire Inc.*
> e: mike.tutkowski@solidfire.com
> o: 303.746.7302
> Advancing the way the world uses the
> cloud<http://solidfire.com/solution/overview/?video=play>
> *™*
>