From: Sidong Yang <realwakka@gmail.com>
To: dsterba@suse.cz, linux-btrfs@vger.kernel.org
Cc: Sidong Yang <realwakka@gmail.com>
Subject: [PATCH] btrfs-progs: filesystem usage: add avail info from statfs()
Date: Mon, 9 Nov 2020 14:59:23 +0000 [thread overview]
Message-ID: <20201109145923.14167-1-realwakka@gmail.com> (raw)
Add available space information from statfs(). This can be different from
'Free (estimated)' in some cases. This patch provide more information about
filesystem usage.
Issue: #306
Signed-off-by: Sidong Yang <realwakka@gmail.com>
---
cmds/filesystem-usage.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/cmds/filesystem-usage.c b/cmds/filesystem-usage.c
index ab60d769..c17e26c3 100644
--- a/cmds/filesystem-usage.c
+++ b/cmds/filesystem-usage.c
@@ -19,6 +19,7 @@
#include <string.h>
#include <unistd.h>
#include <sys/ioctl.h>
+#include <sys/vfs.h>
#include <errno.h>
#include <stdarg.h>
#include <getopt.h>
@@ -430,6 +431,7 @@ static int print_filesystem_usage_overall(int fd, struct chunk_info *chunkinfo,
u64 free_min = 0;
double max_data_ratio = 1.0;
int mixed = 0;
+ struct statfs statfs_buf;
sargs = load_space_info(fd, path);
if (!sargs) {
@@ -556,6 +558,13 @@ static int print_filesystem_usage_overall(int fd, struct chunk_info *chunkinfo,
if (unit_mode != UNITS_HUMAN)
width = 18;
+ ret = statfs(path, &statfs_buf);
+ if (ret) {
+ error("cannot get space info with statfs() on '%s': %m", path);
+ ret = 1;
+ goto exit;
+ }
+
printf("Overall:\n");
printf(" Device size:\t\t%*s\n", width,
@@ -572,6 +581,8 @@ static int print_filesystem_usage_overall(int fd, struct chunk_info *chunkinfo,
width,
pretty_size_mode(free_estimated, unit_mode));
printf("min: %s)\n", pretty_size_mode(free_min, unit_mode));
+ printf(" Avail:\t\t\t%*s\n", width,
+ pretty_size_mode(statfs_buf.f_bavail * statfs_buf.f_bsize, unit_mode));
printf(" Data ratio:\t\t\t%*.2f\n",
width, data_ratio);
printf(" Metadata ratio:\t\t%*.2f\n",
--
2.17.1
next reply other threads:[~2020-11-09 14:59 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-09 14:59 Sidong Yang [this message]
2020-11-09 23:16 ` [PATCH] btrfs-progs: filesystem usage: add avail info from statfs() David Sterba
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