So Xen Server gave me an error / what do i do
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@IRJ i would like to know more about your spin up process
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@krisleslie said in So Xen Server gave me an error / what do i do:
@DustinB3403 well buddy what’s a suggested setup?
OBR10 with the hypervisor installed on a partition of that OBR10.
Assuming of course Winchester drives.
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@IRJ also if you think about that if the read and write speeds are slow that could take quite a while to accomplish.
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@DustinB3403 said in So Xen Server gave me an error / what do i do:
@krisleslie said in So Xen Server gave me an error / what do i do:
@DustinB3403 well buddy what’s a suggested setup?
OBR10 with the hypervisor installed on a partition of that OBR10.
Assuming of course Winchester drives.
OBR10 makes sense with spinning rust but in this day and age it feels like you have to have a good reason to use spinners.
RAID 1 with larger drives are more reliable than RAID 10 and single drives comes in up to 16TB sizes. SSDs are much, much faster than spinners so any workload that needs speed should run on SSDs.
We put one RAID1 with SSDs and if needed another RAID1 with spinning rust on our hosts. Then you get the best of both worlds - for the least amount of money that is.
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@Pete-S said in So Xen Server gave me an error / what do i do:
RAID 1 with larger drives are more reliable than RAID 10
RAID 1
with larger drivesare more reliable than RAID 10No need for the qualification.
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@Pete-S said in So Xen Server gave me an error / what do i do:
We put one RAID1 with SSDs and if needed another RAID1 with spinning rust on our hosts. Then you get the best of both worlds - for the least amount of money that is.
Unless you need more capacity, then commonly RAID 1 with SSD and RAID 6 or 10 with spinners.
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With all hypervisors, I drop a small standard SATA drive in it and install the hypervisor there.
Then I add the RAID array separately.
Sometime I’ll have a R1 for that drive, often I will not. But, I make sure to have the metadata saved on the main RAID array, as well as backed up.
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@scottalanmiller said in So Xen Server gave me an error / what do i do:
@Pete-S said in So Xen Server gave me an error / what do i do:
RAID 1 with larger drives are more reliable than RAID 10
RAID 1
with larger drivesare more reliable than RAID 10No need for the qualification.
Thanks, but it wasn't qualification as such. Just pointing out the use case of needing X amount of storage and then buying four X/2 sized drives to get to RAID10, instead of two X sized drives and running RAID 1.
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Morning fellas, following back up with everyone. I have successfully updated to XCP-NG 8.0 release for the hypervisor on my affected server. I have swapped out the flash drive (still don't think it had a memory issue, just think there was some corruption of the file system) and used a brand new flash drive (128 Gb as the location I install the hypervisor to. I was able to get back to my data on the SR.
So to mitigate this from happening again, I have cloned the flash drive, backed up the metadata properly in 2 locations and confirmed my backups are running fine. I have also moved the logs to a Linux logging server.
What I will say is that I wasted 3 hours because the commands I had to run had only 1 critical mistake the guides below didn't explain. Other than that, things are getting back to normal. I thank everyone who participated in helping me and I appreciate you.
Resources:
https://support.citrix.com/article/CTX136342#Restoring the Mappings
https://support.citrix.com/article/CTX136342 -
So I do have one question because I did actually backup the metadata (originally). It was backed up to the local drive (aka the Flash Drive). How can I take a peek at that data? I tried putting the usb drive into my windows 10 pc and that yield no results. I see about 5-7 partitions.
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@krisleslie said in So Xen Server gave me an error / what do i do:
So I do have one question because I did actually backup the metadata (originally). It was backed up to the local drive (aka the Flash Drive). How can I take a peek at that data? I tried putting the usb drive into my windows 10 pc and that yield no results. I see about 5-7 partitions.
What format are the partitions? I don't think Windows can read most Linux partitions by default.
If you use a Linux based machine, you can likely mount those partitions and see the data. -
@Dashrender smart idea I will try that. I think your right they are remnants of a previous Linux install.
