76 lines
2.6 KiB
Diff
76 lines
2.6 KiB
Diff
From 2b510a862dfc120e9e5592ba15112385b6c8c371 Mon Sep 17 00:00:00 2001
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From: Vratislav Podzimek <vpodzime@redhat.com>
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Date: Mon, 3 Apr 2017 13:54:52 +0200
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Subject: [PATCH] Make sure the returned thpool MD size is valid
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It may be too small as given by the thin_metadata_size tool which
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obviously doesn't guard for too small values.
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Signed-off-by: Vratislav Podzimek <vpodzime@redhat.com>
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---
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src/plugins/lvm-dbus.c | 2 +-
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src/plugins/lvm.c | 2 +-
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tests/lvm_dbus_tests.py | 4 ++++
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tests/lvm_test.py | 4 ++++
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4 files changed, 10 insertions(+), 2 deletions(-)
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diff --git a/src/plugins/lvm-dbus.c b/src/plugins/lvm-dbus.c
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index 25cb82a..86a5383 100644
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--- a/src/plugins/lvm-dbus.c
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+++ b/src/plugins/lvm-dbus.c
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@@ -1097,7 +1097,7 @@ guint64 bd_lvm_get_thpool_meta_size (guint64 size, guint64 chunk_size, guint64 n
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return 0;
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}
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- return ret;
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+ return MAX (ret, BD_LVM_MIN_THPOOL_MD_SIZE);
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}
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/**
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diff --git a/src/plugins/lvm.c b/src/plugins/lvm.c
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index a8acc69..21a20ba 100644
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--- a/src/plugins/lvm.c
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+++ b/src/plugins/lvm.c
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@@ -615,7 +615,7 @@ guint64 bd_lvm_get_thpool_meta_size (guint64 size, guint64 chunk_size, guint64 n
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return 0;
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}
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- return ret;
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+ return MAX (ret, BD_LVM_MIN_THPOOL_MD_SIZE);
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}
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/**
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diff --git a/tests/lvm_dbus_tests.py b/tests/lvm_dbus_tests.py
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index 4ba93e9..998f97c 100644
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--- a/tests/lvm_dbus_tests.py
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+++ b/tests/lvm_dbus_tests.py
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@@ -130,6 +130,10 @@ class LvmNoDevTestCase(unittest.TestCase):
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# twice the chunk_size -> roughly half the metadata needed
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self.assertAlmostEqual(float(out1) / float(out2), 2, places=2)
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+ # unless thin_metadata_size gives a value that is not valid (too small)
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+ self.assertEqual(BlockDev.lvm_get_thpool_meta_size (100 * 1024**2, 128 * 1024, 100),
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+ BlockDev.LVM_MIN_THPOOL_MD_SIZE)
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+
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def test_is_valid_thpool_md_size(self):
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"""Verify that is_valid_thpool_md_size works as expected"""
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diff --git a/tests/lvm_test.py b/tests/lvm_test.py
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index 4879808..c7fedbd 100644
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--- a/tests/lvm_test.py
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+++ b/tests/lvm_test.py
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@@ -114,6 +114,10 @@ class LvmNoDevTestCase(unittest.TestCase):
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# twice the chunk_size -> roughly half the metadata needed
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self.assertAlmostEqual(float(out1) / float(out2), 2, places=2)
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+ # unless thin_metadata_size gives a value that is not valid (too small)
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+ self.assertEqual(BlockDev.lvm_get_thpool_meta_size (100 * 1024**2, 128 * 1024, 100),
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+ BlockDev.LVM_MIN_THPOOL_MD_SIZE)
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+
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def test_is_valid_thpool_md_size(self):
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"""Verify that is_valid_thpool_md_size works as expected"""
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--
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2.9.3
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