50 lines
2.1 KiB
Diff
50 lines
2.1 KiB
Diff
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--- systemd-208/src/journal/journald-server.c
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+++ systemd-208/src/journal/journald-server.c 2013-12-06 12:37:27.482735840 +0000
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@@ -21,6 +21,7 @@
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#include <sys/signalfd.h>
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#include <sys/ioctl.h>
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+#include <linux/fs.h>
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#include <linux/sockios.h>
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#include <sys/statvfs.h>
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#include <sys/mman.h>
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@@ -878,7 +879,7 @@ finish:
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static int system_journal_open(Server *s) {
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- int r;
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+ int r, fd;
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char *fn;
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sd_id128_t machine;
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char ids[33];
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@@ -905,7 +906,28 @@ static int system_journal_open(Server *s
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(void) mkdir("/var/log/journal/", 0755);
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fn = strappenda("/var/log/journal/", ids);
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- (void) mkdir(fn, 0755);
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+
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+ /*
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+ * On journaling and/or compressing file systems avoid doubling the
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+ * efforts for the system, that is set NOCOW and NOCOMP inode flags.
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+ * Check for every single flag as otherwise some of the file systems
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+ * may return EOPNOTSUPP on one unkown flag (like BtrFS does).
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+ */
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+ if (mkdir(fn, 0755) == 0 && (fd = open(fn, O_DIRECTORY)) >= 0) {
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+ long flags;
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+ if (ioctl(fd, FS_IOC_GETFLAGS, &flags) == 0) {
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+ if (ioctl(fd, FS_IOC_SETFLAGS, flags|FS_NOATIME_FL) == 0)
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+ flags |= FS_NOATIME_FL;
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+ if (ioctl(fd, FS_IOC_SETFLAGS, flags|FS_NOCOW_FL) == 0)
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+ flags |= FS_NOCOW_FL;
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+ if (s->compress) {
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+ flags &= ~FS_COMPR_FL;
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+ flags |= FS_NOCOMP_FL;
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+ }
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+ ioctl(fd, FS_IOC_SETFLAGS, flags);
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+ }
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+ close(fd);
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+ }
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fn = strappenda(fn, "/system.journal");
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r = journal_file_open_reliably(fn, O_RDWR|O_CREAT, 0640, s->compress, s->seal, &s->system_metrics, s->mmap, NULL, &s->system_journal);
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