How do I mount this as a SR in XenServer 6.5
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@DustinB3403 Just curious, was this hard or software RAID?
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@stacksofplates said in How do I mount this as a SR in XenServer 6.5:
@scottalanmiller said in How do I mount this as a SR in XenServer 6.5:
@stacksofplates said in How do I mount this as a SR in XenServer 6.5:
@scottalanmiller said in How do I mount this as a SR in XenServer 6.5:
@stacksofplates said in How do I mount this as a SR in XenServer 6.5:
@scottalanmiller said in How do I mount this as a SR in XenServer 6.5:
@Dashrender said in How do I mount this as a SR in XenServer 6.5:
We know from Dustin's posts that XS is creating a sba3 for the remaining space that XS itself doesn't use. That space is created as EXT3. I don't know enough about Linux and partitions, can EXT3 support 14 TB?
Yes, that's small for a filesystem.
Not for ext3. Max supported size is 16 GB.
Well on 32bit systems, yeah. But we're not on those. 32TB on 64bit.
No that's total. https://access.redhat.com/solutions/1532
Even on 7 which is 64 bit only.
That's a RHEL limitation. Not ext3.
https://www.novell.com/support/kb/doc.php?id=7009075
Even in 2011 it was 32TB. You use 8192 block size instead of 4096.
Which is what XenServer is built on. So the same limitation applies.
Tested the 8192 block size on C7 and it indeed block it and reduces it to 4096. How silly.
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The big issue I have here is the raid controller I have doesn't allow me to create two or more virtual disks from the same OBR.
Which was the real goal.
To have two logical volumes
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@FATeknollogee said in How do I mount this as a SR in XenServer 6.5:
@DustinB3403 Just curious, was this hard or software RAID?
Hardware RAID Perc H730P
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@FATeknollogee said in How do I mount this as a SR in XenServer 6.5:
@DustinB3403 Just curious, was this hard or software RAID?
Hardware but PERC does not have an LVM layer so it makes things more complicated than a SmartArray does.
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IIRC, I thought one could always create multiple Virtual drives using those PERC cards?
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@FATeknollogee said in How do I mount this as a SR in XenServer 6.5:
IIRC, I thought one could always create multiple Virtual drives using those PERC cards?
That's what it is lacking. PERC hasn't done that at least in a while. I thought that they did too, until recently, discovered that that LVM functionality is no longer there.
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@scottalanmiller said in How do I mount this as a SR in XenServer 6.5:
@stacksofplates said in How do I mount this as a SR in XenServer 6.5:
@scottalanmiller said in How do I mount this as a SR in XenServer 6.5:
@stacksofplates said in How do I mount this as a SR in XenServer 6.5:
@scottalanmiller said in How do I mount this as a SR in XenServer 6.5:
@stacksofplates said in How do I mount this as a SR in XenServer 6.5:
@scottalanmiller said in How do I mount this as a SR in XenServer 6.5:
@Dashrender said in How do I mount this as a SR in XenServer 6.5:
We know from Dustin's posts that XS is creating a sba3 for the remaining space that XS itself doesn't use. That space is created as EXT3. I don't know enough about Linux and partitions, can EXT3 support 14 TB?
Yes, that's small for a filesystem.
Not for ext3. Max supported size is 16 GB.
Well on 32bit systems, yeah. But we're not on those. 32TB on 64bit.
No that's total. https://access.redhat.com/solutions/1532
Even on 7 which is 64 bit only.
That's a RHEL limitation. Not ext3.
https://www.novell.com/support/kb/doc.php?id=7009075
Even in 2011 it was 32TB. You use 8192 block size instead of 4096.
Which is what XenServer is built on. So the same limitation applies.
Tested the 8192 block size on C7 and it indeed block it and reduces it to 4096. How silly.
At the same time though, what person would be using that now?
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@stacksofplates said in How do I mount this as a SR in XenServer 6.5:
@scottalanmiller said in How do I mount this as a SR in XenServer 6.5:
@stacksofplates said in How do I mount this as a SR in XenServer 6.5:
@scottalanmiller said in How do I mount this as a SR in XenServer 6.5:
@stacksofplates said in How do I mount this as a SR in XenServer 6.5:
@scottalanmiller said in How do I mount this as a SR in XenServer 6.5:
@stacksofplates said in How do I mount this as a SR in XenServer 6.5:
@scottalanmiller said in How do I mount this as a SR in XenServer 6.5:
@Dashrender said in How do I mount this as a SR in XenServer 6.5:
We know from Dustin's posts that XS is creating a sba3 for the remaining space that XS itself doesn't use. That space is created as EXT3. I don't know enough about Linux and partitions, can EXT3 support 14 TB?
Yes, that's small for a filesystem.
Not for ext3. Max supported size is 16 GB.
Well on 32bit systems, yeah. But we're not on those. 32TB on 64bit.
No that's total. https://access.redhat.com/solutions/1532
Even on 7 which is 64 bit only.
That's a RHEL limitation. Not ext3.
https://www.novell.com/support/kb/doc.php?id=7009075
Even in 2011 it was 32TB. You use 8192 block size instead of 4096.
Which is what XenServer is built on. So the same limitation applies.
Tested the 8192 block size on C7 and it indeed block it and reduces it to 4096. How silly.
At the same time though, what person would be using that now?
Seriously.
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@scottalanmiller said in How do I mount this as a SR in XenServer 6.5:
@FATeknollogee said in How do I mount this as a SR in XenServer 6.5:
@DustinB3403 Just curious, was this hard or software RAID?
Hardware but PERC does not have an LVM layer so it makes things more complicated than a SmartArray does.
Was this a known limitation?
Now I'm trying to recall if I could do LVM type actions in my IBM RAID controllers?
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@Dashrender said in How do I mount this as a SR in XenServer 6.5:
@scottalanmiller said in How do I mount this as a SR in XenServer 6.5:
@FATeknollogee said in How do I mount this as a SR in XenServer 6.5:
@DustinB3403 Just curious, was this hard or software RAID?
Hardware but PERC does not have an LVM layer so it makes things more complicated than a SmartArray does.
Was this a known limitation?
Now I'm trying to recall if I could do LVM type actions in my IBM RAID controllers?
IBM and Perc are the same controllers... LSI MegaRAID.
It's Adaptec that does it, I believe.
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Scott - what filesystem is XenServer using in Dustin's setup? The type is LVM, but that's not a filesystem, is it?
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@Dashrender said in How do I mount this as a SR in XenServer 6.5:
Scott - what filesystem is XenServer using in Dustin's setup? The type is LVM, but that's not a filesystem, is it?
Correct, that sits below the filesystem. That's just the voluming layer.
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Use lvs once it is all set up to see what it is doing. I'm not sure exactly how it configures on top of LVM.
