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From 0ef2ca6c9fa2f61f217a4bf5d7fd70f24e12b2eb Mon Sep 17 00:00:00 2001
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From: Kazuhito Hagio <k-hagio-ab@nec.com>
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Date: Thu, 4 Feb 2021 16:29:06 +0900
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Subject: [PATCH] [PATCH] Show write byte size in report messages
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Show write byte size in report messages. This value can be different
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from the size of the actual file because of some holes on dumpfile
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data structure.
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$ makedumpfile --show-stats -l -d 1 vmcore dump.ld1
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...
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Total pages : 0x0000000000080000
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Write bytes : 377686445
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...
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# ls -l dump.ld1
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-rw------- 1 root root 377691573 Feb 4 16:28 dump.ld1
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Note that this value should not be used with /proc/kcore to determine
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how much disk space is needed for crash dump, because the real memory
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usage when a crash occurs can vary widely.
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Signed-off-by: Kazuhito Hagio <k-hagio-ab@nec.com>
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---
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makedumpfile.c | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/makedumpfile-1.6.8/makedumpfile.c b/makedumpfile-1.6.8/makedumpfile.c
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index fcd766b..894c88e 100644
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--- a/makedumpfile-1.6.8/makedumpfile.c
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+++ b/makedumpfile-1.6.8/makedumpfile.c
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@@ -48,6 +48,8 @@ char filename_stdout[] = FILENAME_STDOUT;
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static unsigned long long cache_hit;
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static unsigned long long cache_miss;
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+static unsigned long long write_bytes;
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+
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static void first_cycle(mdf_pfn_t start, mdf_pfn_t max, struct cycle *cycle)
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{
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cycle->start_pfn = round(start, info->pfn_cyclic);
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@@ -4715,6 +4717,8 @@ write_and_check_space(int fd, void *buf, size_t buf_size, char *file_name)
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{
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int status, written_size = 0;
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+ write_bytes += buf_size;
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+
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if (info->flag_dry_run)
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return TRUE;
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@@ -10002,6 +10006,7 @@ print_report(void)
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REPORT_MSG("Memory Hole : 0x%016llx\n", pfn_memhole);
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REPORT_MSG("--------------------------------------------------\n");
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REPORT_MSG("Total pages : 0x%016llx\n", info->max_mapnr);
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+ REPORT_MSG("Write bytes : %llu\n", write_bytes);
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REPORT_MSG("\n");
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REPORT_MSG("Cache hit: %lld, miss: %lld", cache_hit, cache_miss);
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if (cache_hit + cache_miss)
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--
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2.29.2
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