opendev
/
system-config
Code Issues Proposed changes

launch-node.py : use new(?) image name 

The "PVHVM" image appears to have disappeared from RAX, replaced with
a "Cloud" image.

Maybe I haven't looked in the right place, but I can't find any info
on if, why or when this was updated.  But I started a server with the
"Cloud" image and it seems the same as the PVHVM image to me; hdparm
showed read speads the same as a older server and dd writes to a file
were the same speed (recorded below for posterity).

 ianw@nb04:~$ dd if=/dev/zero of=testfile bs=1G count=1 oflag=direct
 1+0 records in
 1+0 records out
 1073741824 bytes (1.1 GB, 1.0 GiB) copied, 5.21766 s, 206 MB/s

 ianw@nb04:~$ sudo hdparm -Tt /dev/xvda
 /dev/xvda:
 Timing cached reads:   16428 MB in  1.99 seconds = 8263.05 MB/sec
 Timing buffered disk reads: 752 MB in  3.00 seconds = 250.65 MB/sec

From looking at dmesg it has

 [    0.000000] DMI: Xen HVM domU, BIOS 4.1.5 11/28/2013
 [    0.000000] Hypervisor detected: Xen HVM
 [    0.000000] Xen version 4.1.
 [    0.000000] Xen Platform PCI: I/O protocol version 1
 [    0.000000] Netfront and the Xen platform PCI driver have been compiled for this kernel: unplug emulated NICs.
 [    0.000000] Blkfront and the Xen platform PCI driver have been compiled for this kernel: unplug emulated disks.

which, if [1] is anything to go by suggests it is in PVHVM mode
anyway.

tl;dr seems like the image name changed.

[1] https://xen-orchestra.com/blog/debian-pvhvm-vs-pv/

Change-Id: I4ff14e7e36f59a9487c32fdc6940e8b8a93459e6
This commit is contained in:
Ian Wienand 2020-03-18 16:54:44 +11:00
parent 8e45f95748
commit c54efaeeaa
1 changed files with 1 additions and 1 deletions
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2
launch/launch-node.py
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@ -307,7 +307,7 @@ def main():
parser.add_argument("--flavor", dest="flavor", default='1GB', parser.add_argument("--flavor", dest="flavor", default='1GB',
help="name (or substring) of flavor") help="name (or substring) of flavor")
parser.add_argument("--image", dest="image", parser.add_argument("--image", dest="image",
default="Ubuntu 18.04 LTS (Bionic Beaver) (PVHVM)", default="Ubuntu 18.04 LTS (Bionic Beaver) (Cloud)",
help="image name") help="image name")
parser.add_argument("--environment", dest="environment", parser.add_argument("--environment", dest="environment",
help="Puppet environment to use", help="Puppet environment to use",