+1We are trying out nutanix and in the installer, it asks me for CVM..
When i chose the 7mm that clearly is SSD it says its HDD and will not install on it..
Is there any workaround for installing cvm on this disk?
/pålt
| 7mm - Bay 0 | LEN | MTFDDAK240TDS-1AW1ZA | Normal | 240 GB | SATA | SSD | 2.5"” |
Best answer by ktelep
How is the disk attached to the system? What kind of host and what disk controller are you using? Are you using some form of RAID adapter or HBA? Typically this issue crops up when the controller between the disk and the host can’t (or won’t) let the OS know that it is an SSD.
There is a workaround, but I’d recommend resolving whatever issue is causing it to show up as an HDD if possible.
Workaround is to first identify the sdX name associated with the device in the disk list of the installer, then hit Ctrl+C to break out of the installer and back to the command prompt.
Run: cat /sys/block/sdX/queue/rotational
Rotational should be 0 for the SSD and 1 for HDD.
If the drive returns 1, the system believes there is no SSD
To fix this, set rotational to:
echo 0 > /sys/block/<device>/queue/rotational
Then restart the installer (do not reboot):
./ce_installer && screen -r
+5How is the disk attached to the system? What kind of host and what disk controller are you using? Are you using some form of RAID adapter or HBA? Typically this issue crops up when the controller between the disk and the host can’t (or won’t) let the OS know that it is an SSD.
There is a workaround, but I’d recommend resolving whatever issue is causing it to show up as an HDD if possible.
Workaround is to first identify the sdX name associated with the device in the disk list of the installer, then hit Ctrl+C to break out of the installer and back to the command prompt.
Run: cat /sys/block/sdX/queue/rotational
Rotational should be 0 for the SSD and 1 for HDD.
If the drive returns 1, the system believes there is no SSD
To fix this, set rotational to:
echo 0 > /sys/block/<device>/queue/rotational
Then restart the installer (do not reboot):
./ce_installer && screen -r
+1
Yes its in a raid.. The server was originally set up with esxi.. but we want to test out nutanix..
It might be some firmware updates.
I can do to check if it solves the issue 1st..
Thanks for the workaround answer
+5Odd, can you show the output of the:
cat /sys/block/sdc/queue/rotational command?
Remember after setting it to 0, DO NOT REBOOT, just restart the installer.
+1Now i have another problem when creating the cluster. probably related to this:
nutanix@NTNX-30c53b0c-A-CVM:1x.x.x.x:~$ cluster --cluster_function_list="one _node_cluster" --svm_ips=x.x.x.x create
2024-03-26 09:48:49,695Z INFO MainThread cluster:2943 Executing action create on SVMs x.x.x.x
2024-03-26 09:48:49,704Z INFO MainThread service_utils.py:1615 The model type LO GICAL VOLUME for SVM boot disk /dev/sdb is not in disk inventory, defaulting to DAS-SATA
2024-03-26 09:48:49,704Z ERROR MainThread cluster:923 Cannot create one node bac kup cluster as not enough boot ssds are present to facilitate backup on this clu ster Available no of boot ssds is 1
2024-03-26 09:48:49,704Z ERROR MainThread cluster:3106 Operation failed
nutanix@NTNX-30c53b0c-A-CVM:x.x.x.x:~$
any more workaround that needs to be done?
this is the output from the hypervisor:
[root@NTNX-30c53b0c-A ~]# lsscsi
[0:0:0:0] disk Samsung Type-C 1100 /dev/sdb
[15:0:0:0] disk ATA ThinkSystem 7mm 00-0 /dev/sda
[17:0:0:0] process Marvell Console 1.01 -
[18:0:0:0] enclosu 5350-8i Smart Adapter 5.91 -
[18:1:0:0] disk 5350-8i LOGICAL VOLUME 5.91 /dev/sdc
[18:2:0:0] storage 5350-8i 5.91 -
[root@NTNX-30c53b0c-A ~]#
lsscsi from the cvm is:
nutanix@NTNX-30c53b0c-A-CVM:x.x.x.x:~$ lsscsi
[1:0:0:0] cd/dvd QEMU QEMU DVD-ROM 2.5+ /dev/sr0
[2:0:0:0] disk ATA ThinkSystem 7mm 2.5+ /dev/sda
[2:0:0:1] disk ATA LOGICAL VOLUME 2.5+ /dev/sdb
nutanix@NTNX-30c53b0c-A-CVM:x.x.x.x:~$
+1so i did the same thing for the datadisk:
nutanix@NTNX-30c53b0c-A-CVM:x.x.x.x:~$ cat /sys/block/sdb/queue/rotational
1
nutanix@NTNX-30c53b0c-A-CVM:x.x.x.x:~$
nutanix@NTNX-30c53b0c-A-CVM:x.x.x.x:~$ sudo echo 0 > /sys/block/sdb/queue/rotational
-bash: /sys/block/sdb/queue/rotational: Permission denied
But i can not write to it.
+1 “cluster --redundancy_factor=1 -s x.x.x.x create” worked for now.. At least it creates the cluster (without a backup cvm).. lets see how this goes..
Cluster created but everything down..
cs | grep -v UP is slowly giving less more down:
The state of the cluster: start
Lockdown mode: Disabled
CVM: x.x.x.x Up, ZeusLeader
APLOS DOWN []
PlacementSolver DOWN []
Lazan DOWN []
Polaris DOWN []
Delphi DOWN []
Security DOWN []
Flow DOWN []
Anduril DOWN []
XTrim DOWN []
ClusterHealth DOWN []
and now all is up.. and i can https://x.x.x.x:2100 (but its; This page is deprecated for all cluster operations) main issue with disks solved
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