[Xen-devel] [PATCH] vscsi and symlinks

["James Harper" <james.harper@xxxxxxxxxxxxxxxx>]

By default, vscsi expects to be passed the final device name (eg
/dev/st3) instead of one of the various udev symlinks (eg
/dev/tape/by-path/pci-0000:01:08.0-scsi-0:0:2:0-st). The following patch
resolves the path to the real path if the name starts with /dev/

James

--- a/tools/python/xen/util/vscsi_util.py  2010-12-03 23:26:46.391655087
+1100
+++ b/tools/python/xen/util/vscsi_util.py  2011-02-07 12:20:37.599527204
+1100
@@ -158,6 +158,8 @@


 def vscsi_get_hctl_and_devname_by(target, scsi_devices = None):
+    if target.startswith('/dev/'):
+        target = os.path.realpath(target)
     if scsi_devices is None:
         if len(target.split(':')) == 4:
             scsi_devices = _vscsi_get_scsidevices_by_lsscsi(target)

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