X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=lustre-iokit%2Fsgpdd-survey%2Fsgpdd-survey;h=b7612d2e90c69fba2629b2490f59db4cf0c2b905;hp=409fb84a48acd78f9d432b53bee90f2d1792ec9e;hb=4b177a337613f88ebb4f6454d2bdec64b9135c27;hpb=e54c618cf0f3321aa3517bb97f0377ea7ab85316

diff --git a/lustre-iokit/sgpdd-survey/sgpdd-survey b/lustre-iokit/sgpdd-survey/sgpdd-survey
index 409fb84..b7612d2 100755
--- a/lustre-iokit/sgpdd-survey/sgpdd-survey
+++ b/lustre-iokit/sgpdd-survey/sgpdd-survey
@@ -3,12 +3,13 @@
 ######################################################################
 # customize per survey
 
-# the SCSI devices to measure
-#scsidevs="/dev/sde /dev/sdh"
+# the SCSI devices to measure - WARNING: will be erased.
+#scsidevs=`ls /dev/sd[a-z] /dev/sd[a-z][a-z]` # all devices, if you use udev
+scsidevs=${scsidevs:-"/dev/sde /dev/sdh"}
 
 # result file prefix.  date/time+hostname makes unique
 # NB ensure the path exists if it includes subdirs
-rslt=/tmp/sgpdd_survey_`date +%F@%R`_`uname -n`
+rslt=${rslt:-"/tmp/sgpdd_survey_`date +%F@%R`_`uname -n`"}
 
 # what to do (read or write)
 actions="write read"
@@ -22,13 +23,13 @@ rszlo=1024
 rszhi=1024
 
 # Concurrent regions per device
-crglo=1
-crghi=256
+crglo=${crglo:-1}
+crghi=${crghi:-256}
 
 # threads to share between concurrent regions per device
 # NB survey skips over #thr < #regions and #thr/#regions > SG_MAX_QUEUE
-thrlo=1
-thrhi=4096
+thrlo=${thrlo:-1}
+thrhi=${thrhi:-4096}
 
 #####################################################################
 # leave the rest of this alone unless you know what you're doing...