XenServer local storage on a T3500
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@travisdh1 said in XenServer local storage on a T3500:
@DustinB3403 said in XenServer local storage on a T3500:
@travisdh1 Okay cool, so a 6TB array.
Did you try to use the array directly from the installation, or did you skip using any local storage, and wanted to configure it manually?
I waited and did it manually. Software RAID, so I don't think the install script gives you the choice of using it. If it does I can give that a shot this time.
Oh, yeah software array you have to configure inside of XS, so you won't be able to set it up from the installer.
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@travisdh1 said in XenServer local storage on a T3500:
@DustinB3403 said in XenServer local storage on a T3500:
@travisdh1 Okay cool, so a 6TB array.
Did you try to use the array directly from the installation, or did you skip using any local storage, and wanted to configure it manually?
I waited and did it manually. Software RAID, so I don't think the install script gives you the choice of using it. If it does I can give that a shot this time.
Why did you go Software RAID?
But that does explain why you didn't see the ext3 issue Dustin was seeing during his install.
Do you think your lvm issue was because of something you did incorrectly when trying to attach it, not something that was wrong with lvm?
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@travisdh1 said in XenServer local storage on a T3500:
@DustinB3403 said in XenServer local storage on a T3500:
@travisdh1 Okay cool, so a 6TB array.
Did you try to use the array directly from the installation, or did you skip using any local storage, and wanted to configure it manually?
I waited and did it manually. Software RAID, so I don't think the install script gives you the choice of using it. If it does I can give that a shot this time.
That's what I had been wondering, you had left the XS standard support system and are doing it manually, so a bunch of manual work is expected.
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@scottalanmiller said in XenServer local storage on a T3500:
@travisdh1 said in XenServer local storage on a T3500:
@DustinB3403 said in XenServer local storage on a T3500:
@travisdh1 Okay cool, so a 6TB array.
Did you try to use the array directly from the installation, or did you skip using any local storage, and wanted to configure it manually?
I waited and did it manually. Software RAID, so I don't think the install script gives you the choice of using it. If it does I can give that a shot this time.
That's what I had been wondering, you had left the XS standard support system and are doing it manually, so a bunch of manual work is expected.
You can't get lvm during install, at least with v6.5. There is no option to choose the setup type of the SR.
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@Dashrender said in XenServer local storage on a T3500:
@scottalanmiller said in XenServer local storage on a T3500:
@travisdh1 said in XenServer local storage on a T3500:
@DustinB3403 said in XenServer local storage on a T3500:
@travisdh1 Okay cool, so a 6TB array.
Did you try to use the array directly from the installation, or did you skip using any local storage, and wanted to configure it manually?
I waited and did it manually. Software RAID, so I don't think the install script gives you the choice of using it. If it does I can give that a shot this time.
That's what I had been wondering, you had left the XS standard support system and are doing it manually, so a bunch of manual work is expected.
You can't get lvm during install, at least with v6.5. There is no option to choose the setup type of the SR.
Yes there is. We tell people to pick ext3 most of the time as the only thing you need to know during the setup. It's labeled "thin provisioned."
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@scottalanmiller said in XenServer local storage on a T3500:
@travisdh1 said in XenServer local storage on a T3500:
@DustinB3403 said in XenServer local storage on a T3500:
@travisdh1 Okay cool, so a 6TB array.
Did you try to use the array directly from the installation, or did you skip using any local storage, and wanted to configure it manually?
I waited and did it manually. Software RAID, so I don't think the install script gives you the choice of using it. If it does I can give that a shot this time.
That's what I had been wondering, you had left the XS standard support system and are doing it manually, so a bunch of manual work is expected.
Yep. Basically, the T3500 replaces a low power box that was only storage space. With the T3500, it has enough horsepower to cover other services when the one real server goes down. So why not have that security blanket is how my logic is working.
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@scottalanmiller said in XenServer local storage on a T3500:
@Dashrender said in XenServer local storage on a T3500:
@scottalanmiller said in XenServer local storage on a T3500:
@travisdh1 said in XenServer local storage on a T3500:
@DustinB3403 said in XenServer local storage on a T3500:
@travisdh1 Okay cool, so a 6TB array.
Did you try to use the array directly from the installation, or did you skip using any local storage, and wanted to configure it manually?
I waited and did it manually. Software RAID, so I don't think the install script gives you the choice of using it. If it does I can give that a shot this time.
That's what I had been wondering, you had left the XS standard support system and are doing it manually, so a bunch of manual work is expected.
You can't get lvm during install, at least with v6.5. There is no option to choose the setup type of the SR.
Yes there is. We tell people to pick ext3 most of the time as the only thing you need to know during the setup. It's labeled "thin provisioned."
OHhHHHH... Again my Linux knowledge being what is isn't... I didn't know that.
So lvm can't thin provision?
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@Dashrender said in XenServer local storage on a T3500:
@scottalanmiller said in XenServer local storage on a T3500:
@Dashrender said in XenServer local storage on a T3500:
@scottalanmiller said in XenServer local storage on a T3500:
@travisdh1 said in XenServer local storage on a T3500:
@DustinB3403 said in XenServer local storage on a T3500:
@travisdh1 Okay cool, so a 6TB array.
Did you try to use the array directly from the installation, or did you skip using any local storage, and wanted to configure it manually?
I waited and did it manually. Software RAID, so I don't think the install script gives you the choice of using it. If it does I can give that a shot this time.
That's what I had been wondering, you had left the XS standard support system and are doing it manually, so a bunch of manual work is expected.
You can't get lvm during install, at least with v6.5. There is no option to choose the setup type of the SR.
Yes there is. We tell people to pick ext3 most of the time as the only thing you need to know during the setup. It's labeled "thin provisioned."
OHhHHHH... Again my Linux knowledge being what is isn't... I didn't know that.
So lvm can't thin provision?
Within this context, correct.
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When would you NOT want to thin provision?
And are you saying if it is over 2TB you cannot thin provision?
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@scottalanmiller said
Right, there is a known problem that makes XO slow because of what it uses under the hood. Use Veeam and it will be fast, I'm sure. It's not an XS speed issue. It's a XAPI call speed issue that is leveraged by XO.
It's not just XO. A lot of the people on the XS bug tracker aren't using XO. It's just a bug in exporting/importing.
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@BRRABill said in XenServer local storage on a T3500:
@scottalanmiller said
Right, there is a known problem that makes XO slow because of what it uses under the hood. Use Veeam and it will be fast, I'm sure. It's not an XS speed issue. It's a XAPI call speed issue that is leveraged by XO.
It's not just XO. A lot of the people on the XS bug tracker aren't using XO. It's just a bug in exporting/importing.
Yes, XS has an import/export slowness. Not a backup one.
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@BRRABill said in XenServer local storage on a T3500:
When would you NOT want to thin provision?
And are you saying if it is over 2TB you cannot thin provision?
That's the issue, thin provisioning is limited currently to 2TB or smaller volumes (VHDs.)
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@scottalanmiller said in XenServer local storage on a T3500:
@BRRABill said in XenServer local storage on a T3500:
When would you NOT want to thin provision?
And are you saying if it is over 2TB you cannot thin provision?
That's the issue, thin provisioning is limited currently to 2TB or smaller volumes (VHDs.)
Wait, is it 2 TB volumes as in ext3 partitions or is it 2 TV VHDs?
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@Dashrender said in XenServer local storage on a T3500:
@scottalanmiller said in XenServer local storage on a T3500:
@BRRABill said in XenServer local storage on a T3500:
When would you NOT want to thin provision?
And are you saying if it is over 2TB you cannot thin provision?
That's the issue, thin provisioning is limited currently to 2TB or smaller volumes (VHDs.)
Wait, is it 2 TB volumes as in ext3 partitions or is it 2 TV VHDs?
VHDs.
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@scottalanmiller said in XenServer local storage on a T3500:
@Dashrender said in XenServer local storage on a T3500:
@scottalanmiller said in XenServer local storage on a T3500:
@BRRABill said in XenServer local storage on a T3500:
When would you NOT want to thin provision?
And are you saying if it is over 2TB you cannot thin provision?
That's the issue, thin provisioning is limited currently to 2TB or smaller volumes (VHDs.)
Wait, is it 2 TB volumes as in ext3 partitions or is it 2 TV VHDs?
VHDs.
That was another thing people are always clamoring about with XS ... the lack of VHDX.
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@BRRABill said in XenServer local storage on a T3500:
@scottalanmiller said in XenServer local storage on a T3500:
@Dashrender said in XenServer local storage on a T3500:
@scottalanmiller said in XenServer local storage on a T3500:
@BRRABill said in XenServer local storage on a T3500:
When would you NOT want to thin provision?
And are you saying if it is over 2TB you cannot thin provision?
That's the issue, thin provisioning is limited currently to 2TB or smaller volumes (VHDs.)
Wait, is it 2 TB volumes as in ext3 partitions or is it 2 TV VHDs?
VHDs.
That was another thing people are always clamoring about with XS ... the lack of VHDX.
Which I think is ridiculous that it's not in 7. VHDX is over 4 years old. Even worse, QCOW2 is something like 10 (or more) years old, and has almost a 9 EB limit.
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@stacksofplates said in XenServer local storage on a T3500:
@BRRABill said in XenServer local storage on a T3500:
@scottalanmiller said in XenServer local storage on a T3500:
@Dashrender said in XenServer local storage on a T3500:
@scottalanmiller said in XenServer local storage on a T3500:
@BRRABill said in XenServer local storage on a T3500:
When would you NOT want to thin provision?
And are you saying if it is over 2TB you cannot thin provision?
That's the issue, thin provisioning is limited currently to 2TB or smaller volumes (VHDs.)
Wait, is it 2 TB volumes as in ext3 partitions or is it 2 TV VHDs?
VHDs.
That was another thing people are always clamoring about with XS ... the lack of VHDX.
Which I think is ridiculous that it's not in 7. VHDX is over 4 years old. Even worse, QCOW2 is something like 10 (or more) years old, and has almost a 9 EB limit.
The limitation on the partitions sizes is because of the use of snapshot functionality. Imagine having a 9EB array and partition, and then trying to perform a snapshot on it.
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@DustinB3403 said in XenServer local storage on a T3500:
@stacksofplates said in XenServer local storage on a T3500:
@BRRABill said in XenServer local storage on a T3500:
@scottalanmiller said in XenServer local storage on a T3500:
@Dashrender said in XenServer local storage on a T3500:
@scottalanmiller said in XenServer local storage on a T3500:
@BRRABill said in XenServer local storage on a T3500:
When would you NOT want to thin provision?
And are you saying if it is over 2TB you cannot thin provision?
That's the issue, thin provisioning is limited currently to 2TB or smaller volumes (VHDs.)
Wait, is it 2 TB volumes as in ext3 partitions or is it 2 TV VHDs?
VHDs.
That was another thing people are always clamoring about with XS ... the lack of VHDX.
Which I think is ridiculous that it's not in 7. VHDX is over 4 years old. Even worse, QCOW2 is something like 10 (or more) years old, and has almost a 9 EB limit.
The limitation on the partitions sizes is because of the use of snapshot functionality. Imagine having a 9EB array and partition, and then trying to perform a snapshot on it.
VHDX has the same limit (or similar). No one would really have an image that size, but it would be compatible with every other system. And snapshots wouldn't take any longer. It creates a new file and writes to it and reads from the old one.
