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From 467f1b0cec3d48ddbf61aaa000757af82394609e Mon Sep 17 00:00:00 2001
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From: Jan Synacek <jsynacek@redhat.com>
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Date: Mon, 22 Oct 2018 12:15:07 +0200
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Subject: [PATCH] journald: respect KeepFree= as well as MaxUse= values
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Resolves: #1361893
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---
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 src/journal/journald-server.c | 15 ++++++++++++++-
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 1 file changed, 14 insertions(+), 1 deletion(-)
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diff --git a/src/journal/journald-server.c b/src/journal/journald-server.c
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index 88cf0b2d53..2e1e07eb0e 100644
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--- a/src/journal/journald-server.c
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+++ b/src/journal/journald-server.c
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@@ -557,6 +557,8 @@ static void do_vacuum(
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                 const char* path,
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                 JournalMetrics *metrics) {
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+        uint64_t total, limit = metrics->max_use;
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+        struct statvfs st;
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         const char *p;
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         int r;
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@@ -564,7 +566,18 @@ static void do_vacuum(
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                 return;
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         p = strjoina(path, id);
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-        r = journal_directory_vacuum(p, metrics->max_use, s->max_retention_usec, &s->oldest_file_usec, false);
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+
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+        r = statvfs(p, &st);
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+        if (r < 0) {
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+                log_error_errno(r, "Failed to statvfs: %s", p);
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+                return;
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+        }
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+
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+        total = st.f_bsize * st.f_blocks;
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+        if (total - metrics->keep_free < limit)
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+                limit = total - metrics->keep_free;
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+
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+        r = journal_directory_vacuum(p, limit, s->max_retention_usec, &s->oldest_file_usec, false);
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         if (r < 0 && r != -ENOENT)
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                 log_error_errno(r, "Failed to vacuum %s: %m", p);
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 }