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Fix LSSD path for azure VMs by using symlink by-index if present #6686

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Merged
copybara-service merged 1 commit into from
May 20, 2026
Merged

Fix LSSD path for azure VMs by using symlink by-index if present #6686

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6 changes: 5 additions & 1 deletion perfkitbenchmarker/providers/azure/azure_disk.py
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Original file line number Diff line number Diff line change
Expand Up @@ -417,8 +417,12 @@ def _Detach(self):
def GetDevicePath(self):
"""Returns the path to the device inside the VM."""
if self.disk_type == disk.LOCAL:
# by-index path is not supported on v5 and older verions.
if LocalDriveIsNvme(self.machine_type):
return '/dev/nvme%sn1' % str(self.lun)
if self.vm.TryRemoteCommand('test -e /dev/disk/azure/local/by-index'):
return f'/dev/disk/azure/local/by-index/{self.lun}'
else:
return '/dev/nvme%sn1' % str(self.lun)
# Temp disk naming isn't always /dev/sdb:
# https://github.com/MicrosoftDocs/azure-docs/issues/54055
return '/dev/disk/cloud/azure_resource'
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