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From 53a1267b00b7e981a5f67b9d241da6008004d002 Mon Sep 17 00:00:00 2001
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From: David Hildenbrand <david@redhat.com>
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Date: Tue, 17 Oct 2017 19:16:00 +0200
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Subject: [PATCH 55/69] tools/kvm_stat: display guest list in pid/guest
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selection screens
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RH-Author: David Hildenbrand <david@redhat.com>
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Message-id: <20171017191605.2378-35-david@redhat.com>
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Patchwork-id: 77338
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O-Subject: [RHEL-7.5 qemu-kvm-rhev PATCH 34/39] tools/kvm_stat: display guest list in pid/guest selection screens
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Bugzilla: 1497137
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RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
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RH-Acked-by: Cornelia Huck <cohuck@redhat.com>
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RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
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RH-Acked-by: Thomas Huth <thuth@redhat.com>
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Upstream-status: linux.git 865279c53ca9d88718d974bb014b2c6ce259ac75
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commit 865279c53ca9d88718d974bb014b2c6ce259ac75
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Author: Stefan Raspl <raspl@linux.vnet.ibm.com>
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Date: Wed Jun 7 21:08:43 2017 +0200
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tools/kvm_stat: display guest list in pid/guest selection screens
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Display a (possibly inaccurate) list of all running guests. Note that we
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leave a bit of extra room above the list for potential error messages.
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Furthermore, we deliberately do not reject pids or guest names that are
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not in our list, as we cannot rule out that our fuzzy approach might be
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in error somehow.
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Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: David Hildenbrand <david@redhat.com>
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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scripts/kvm/kvm_stat | 49 +++++++++++++++++++++++++++++++++++++------------
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1 file changed, 37 insertions(+), 12 deletions(-)
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diff --git a/scripts/kvm/kvm_stat b/scripts/kvm/kvm_stat
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index cf7aa28..2cf5176 100755
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--- a/scripts/kvm/kvm_stat
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+++ b/scripts/kvm/kvm_stat
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@@ -894,15 +894,9 @@ class Tui(object):
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curses.nocbreak()
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curses.endwin()
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- @staticmethod
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- def get_pid_from_gname(gname):
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- """Fuzzy function to convert guest name to QEMU process pid.
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-
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- Returns a list of potential pids, can be empty if no match found.
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- Throws an exception on processing errors.
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-
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- """
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- pids = []
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+ def get_all_gnames(self):
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+ """Returns a list of (pid, gname) tuples of all running guests"""
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+ res = []
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try:
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child = subprocess.Popen(['ps', '-A', '--format', 'pid,args'],
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stdout=subprocess.PIPE)
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@@ -912,11 +906,40 @@ class Tui(object):
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line = line.lstrip().split(' ', 1)
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# perform a sanity check before calling the more expensive
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# function to possibly extract the guest name
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- if (' -name ' in line[1] and
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- gname == self.get_gname_from_pid(line[0])):
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- pids.append(int(line[0]))
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+ if ' -name ' in line[1]:
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+ res.append((line[0], self.get_gname_from_pid(line[0])))
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child.stdout.close()
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+ return res
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+
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+ def print_all_gnames(self, row):
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+ """Print a list of all running guests along with their pids."""
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+ self.screen.addstr(row, 2, '%8s %-60s' %
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+ ('Pid', 'Guest Name (fuzzy list, might be '
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+ 'inaccurate!)'),
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+ curses.A_UNDERLINE)
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+ row += 1
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+ try:
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+ for line in self.get_all_gnames():
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+ self.screen.addstr(row, 2, '%8s %-60s' % (line[0], line[1]))
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+ row += 1
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+ if row >= self.screen.getmaxyx()[0]:
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+ break
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+ except Exception:
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+ self.screen.addstr(row + 1, 2, 'Not available')
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+
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+ def get_pid_from_gname(self, gname):
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+ """Fuzzy function to convert guest name to QEMU process pid.
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+
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+ Returns a list of potential pids, can be empty if no match found.
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+ Throws an exception on processing errors.
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+
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+ """
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+ pids = []
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+ for line in self.get_all_gnames():
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+ if gname == line[1]:
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+ pids.append(int(line[0]))
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+
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return pids
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@staticmethod
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@@ -1102,6 +1125,7 @@ class Tui(object):
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'This might limit the shown data to the trace '
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'statistics.')
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self.screen.addstr(5, 0, msg)
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+ self.print_all_gnames(7)
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curses.echo()
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self.screen.addstr(3, 0, "Pid [0 or pid]: ")
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@@ -1171,6 +1195,7 @@ class Tui(object):
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'This might limit the shown data to the trace '
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'statistics.')
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self.screen.addstr(5, 0, msg)
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+ self.print_all_gnames()
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curses.echo()
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self.screen.addstr(3, 0, "Guest [ENTER or guest]: ")
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gname = self.screen.getstr()
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--
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1.8.3.1
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