X-Git-Url: https://code.grnet.gr/git/ganeti-local/blobdiff_plain/d2ac55261a8c8ffb0400f30842509b420c11d6dd..425e39069abbc0783e7833d3b73e83746ad566d1:/hscan.1

diff --git a/hscan.1 b/hscan.1
index b7ae751..c4bec29 100644
--- a/hscan.1
+++ b/hscan.1
@@ -1,4 +1,4 @@
-.TH HSCAN 1 2009-03-22 htools "Ganeti H-tools"
+.TH HSCAN 1 2009-03-23 htools "Ganeti H-tools"
 .SH NAME
 hscan \- Scan clusters via RAPI and save node/instance data
 
@@ -25,6 +25,49 @@ For each cluster, two files named \fIcluster\fB.instances\fR and
 data. These files can then be used in \fBhbal\fR(1) or \fBhn1\fR(1)
 via the \fB-i\fR and \fB-n\fR options.
 
+The one-line output for each cluster will show the following:
+.RS
+.TP
+.B Name
+The name of the cluster (or the IP address that was given, etc.)
+.TP
+.B Nodes
+The number of nodes in the cluster
+.TP
+.B Inst
+The number of instances in the cluster
+.TP
+.B BNode
+The number of nodes failing N+1
+.TP
+.B BInst
+The number of instances living on N+1-failed nodes
+.TP
+.B t_mem
+Total memory in the cluster
+.TP
+.B f_mem
+Free memory in the cluster
+.TP
+.B t_disk
+Total disk in the cluster
+.TP
+.B f_disk
+Free disk space in the cluster
+.TP
+.B Score
+The score of the cluster, as would be reported by \fBhscan\fR(1) if
+run on the generated data files.
+
+.RE
+
+In case of errors while collecting data, all fields after the name of
+the cluster are replaced with the error display.
+
+.B Note:
+this output format is not yet final so it should not be used for
+scripting yet.
+
 .SH OPTIONS
 The options that can be passed to the program are as follows:
 
@@ -55,5 +98,21 @@ data).
 The program does not check its input data for consistency, and aborts
 with cryptic errors messages in this case.
 
+The RAPI collection doesn't deal with non-\fBdrbd\fR instances, and
+chokes on input data which has such instances.
+
+.SH EXAMPLE
+
+.in +4n
+.nf
+.RB "$ " "hscan cluster1"
+Name     Nodes  Inst BNode BInst  t_mem  f_mem t_disk f_disk      Score
+cluster1     2     2     0     0   1008    652    255    253 0.24404762
+.RB "$ " "ls -l cluster1.*"
+-rw-r--r-- 1 root root 163 2009-03-23 07:26 cluster1.instances
+-rw-r--r-- 1 root root  90 2009-03-23 07:26 cluster1.nodes
+.fi
+.in
+
 .SH SEE ALSO
 .BR hbal "(1), " hn1 "(1), " ganeti "(7), " gnt-instance "(8), " gnt-node "(8)"