AltCloud: to not run dmidecode on arm systems.

As with SmartOS change earlier, running dmidecode on arm will crash kvm.
So instead of doing that, just return UNKNOWN which will cause this
data source to not activate.

LP: #1285686

2 files changed, 8 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index f59517da..76ab88c4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -31,7 +31,8 @@
  - Add GCE datasource [Vaidas Jablonskis]
  - Add native Openstack datasource which reads openstack metadata
    rather than relying on EC2 data in openstack metadata service.
- - SmartOS: disable running on arm systems due to bug (LP: #1243287)
+ - SmartOS, AltCloud: disable running on arm systems due to bug
+   (LP: #1243287, #1285686) [Oleg Strikov]
 0.7.4:
  - fix issue mounting 'ephemeral0' if ephemeral0 was an alias for a
    partitioned block device with target filesystem on ephemeral0.1.
diff --git a/cloudinit/sources/DataSourceAltCloud.py b/cloudinit/sources/DataSourceAltCloud.py
index a834f8eb..1e913a6e 100644
--- a/cloudinit/sources/DataSourceAltCloud.py
+++ b/cloudinit/sources/DataSourceAltCloud.py
@@ -115,6 +115,12 @@ class DataSourceAltCloud(sources.DataSource):
 
         '''
 
+        uname_arch = os.uname()[4]
+        if uname_arch.startswith("arm") or uname_arch == "aarch64":
+            # Disabling because dmidecode in CMD_DMI_SYSTEM crashes kvm process
+            LOG.debug("Disabling AltCloud datasource on arm (LP: #1243287)")
+            return 'UNKNOWN'
+
         cmd = CMD_DMI_SYSTEM
         try:
             (cmd_out, _err) = util.subp(cmd)