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From 9388ab17da885dbd99d8b68217b282646ce9d73d Mon Sep 17 00:00:00 2001
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From: Ming-Hung Tsai <mtsai@redhat.com>
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Date: Mon, 16 Aug 2021 18:16:29 +0800
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Subject: [PATCH 1/3] [thin_repair/thin_dump] Fix sorting of data mapping
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candidates
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- Fix the references for sorting. The timestamp statistics is stored
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in node_info corresponding to the second element.
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- Fix the timestamp comparison routine. The mapping root with more recent
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blocks should have higher priority.
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(cherry picked from commit 371df963113e7af7b97d2158757e35c44804ccb4)
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---
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thin-provisioning/metadata_dumper.cc | 37 +++++++++++++++++++++---------------
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1 file changed, 22 insertions(+), 15 deletions(-)
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diff --git a/thin-provisioning/metadata_dumper.cc b/thin-provisioning/metadata_dumper.cc
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index 665c762..37c6969 100644
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--- a/thin-provisioning/metadata_dumper.cc
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+++ b/thin-provisioning/metadata_dumper.cc
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@@ -252,26 +252,33 @@ namespace {
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bool cmp_time_counts(pair<node_info, node_info> const &lhs_pair,
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pair<node_info, node_info> const &rhs_pair) {
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- auto const &lhs = lhs_pair.first.time_counts;
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- auto const &rhs = rhs_pair.first.time_counts;
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+ auto const &lhs = lhs_pair.second.time_counts;
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+ auto const &rhs = rhs_pair.second.time_counts;
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- for (auto lhs_it = lhs.crbegin(); lhs_it != lhs.crend(); lhs_it++) {
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- for (auto rhs_it = rhs.crbegin(); rhs_it != rhs.crend(); rhs_it++) {
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- if (lhs_it->first > rhs_it->first)
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- return true;
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- else if (rhs_it->first > lhs_it->first)
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- return false;
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+ auto lhs_it = lhs.crbegin();
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+ auto rhs_it = rhs.crbegin();
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+ while (lhs_it != lhs.crend() && rhs_it != rhs.crend()) {
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- else if (lhs_it->second > rhs_it->second)
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- return true;
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+ auto lhs_time = lhs_it->first;
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+ auto rhs_time = rhs_it->first;
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+ auto lhs_count = lhs_it->second;
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+ auto rhs_count = rhs_it->second;
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- else if (rhs_it->second > lhs_it->second)
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- return false;
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- }
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- }
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+ if (lhs_time > rhs_time)
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+ return true;
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+ else if (rhs_time > lhs_time)
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+ return false;
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+ else if (lhs_count > rhs_count)
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+ return true;
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+ else if (rhs_count > lhs_count)
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+ return false;
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+
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+ lhs_it++;
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+ rhs_it++;
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+ }
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- return true;
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+ return (lhs_it != lhs.crend()) ? true : false;
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}
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class gatherer {
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--
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1.8.3.1
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