[pve-devel] [PATCH pve-qemu] fix: 3865: backup restore human readable output
Daniel Tschlatscher
d.tschlatscher at proxmox.com
Thu Mar 24 16:44:44 CET 2022
The backup restore dialogue now displays size information and duration in a format more easily understandable for humans. The output was adapted to match the output of the backup restore dialogue where possible.
Added 2 helper methods for displaying bytes and time in human readable format.
Signed-off-by: Daniel Tschlatscher <d.tschlatscher at proxmox.com>
---
...VE-Backup-add-vma-backup-format-code.patch | 117 ++++++++++++++----
1 file changed, 96 insertions(+), 21 deletions(-)
diff --git a/debian/patches/pve/0026-PVE-Backup-add-vma-backup-format-code.patch b/debian/patches/pve/0026-PVE-Backup-add-vma-backup-format-code.patch
index c4ed5bb..2dc1bd8 100644
--- a/debian/patches/pve/0026-PVE-Backup-add-vma-backup-format-code.patch
+++ b/debian/patches/pve/0026-PVE-Backup-add-vma-backup-format-code.patch
@@ -9,11 +9,11 @@ Signed-off-by: Fabian Ebner <f.ebner at proxmox.com>
---
block/meson.build | 2 +
meson.build | 5 +
- vma-reader.c | 857 ++++++++++++++++++++++++++++++++++++++++++++++
- vma-writer.c | 790 ++++++++++++++++++++++++++++++++++++++++++
- vma.c | 851 +++++++++++++++++++++++++++++++++++++++++++++
- vma.h | 150 ++++++++
- 6 files changed, 2655 insertions(+)
+ vma-reader.c | 922 ++++++++++++++++++++++++++++++++++++++++++++++
+ vma-writer.c | 790 +++++++++++++++++++++++++++++++++++++++
+ vma.c | 857 ++++++++++++++++++++++++++++++++++++++++++
+ vma.h | 153 ++++++++
+ 6 files changed, 2729 insertions(+)
create mode 100644 vma-reader.c
create mode 100644 vma-writer.c
create mode 100644 vma.c
@@ -57,10 +57,10 @@ index 96de1a6ef9..54c23b9567 100644
subdir('contrib/elf2dmp')
diff --git a/vma-reader.c b/vma-reader.c
new file mode 100644
-index 0000000000..2b1d1cdab3
+index 0000000000..907759b295
--- /dev/null
+++ b/vma-reader.c
-@@ -0,0 +1,857 @@
+@@ -0,0 +1,922 @@
+/*
+ * VMA: Virtual Machine Archive
+ *
@@ -77,6 +77,7 @@ index 0000000000..2b1d1cdab3
+#include "qemu/osdep.h"
+#include <glib.h>
+#include <uuid/uuid.h>
++#include <math.h>
+
+#include "qemu-common.h"
+#include "qemu/timer.h"
@@ -87,6 +88,9 @@ index 0000000000..2b1d1cdab3
+
+static unsigned char zero_vma_block[VMA_BLOCK_SIZE];
+
++static time_t last_time = 0;
++static int64_t last_size = 0;
++
+typedef struct VmaRestoreState {
+ BlockBackend *target;
+ bool write_zeroes;
@@ -649,13 +653,31 @@ index 0000000000..2b1d1cdab3
+
+ if (verbose) {
+ time_t duration = time(NULL) - vmar->start_time;
-+ int percent = (vmar->clusters_read*100)/vmar->cluster_count;
-+ if (percent != vmar->clusters_read_per) {
-+ printf("progress %d%% (read %zd bytes, duration %zd sec)\n",
-+ percent, vmar->clusters_read*VMA_CLUSTER_SIZE,
-+ duration);
++ int percent = (vmar->clusters_read*100) / vmar->cluster_count;
++
++ /* Dont spam so many progress prints, but still show the 100% message*/
++ if ((duration - last_time) > 2 || percent == 100) {
++ int delta = duration - last_time;
++ int64_t bps = vmar->clusters_read*VMA_CLUSTER_SIZE - last_size;
++
++ if (delta != 0)
++ bps /= delta;
++
++ printf("Progress %d%% (", percent);
++ print_human_readable_byte_count(vmar->clusters_read*VMA_CLUSTER_SIZE);
++ printf(" of ");
++ print_human_readable_byte_count(vmar->devinfo[dev_id].size);
++ printf(") in ");
++ print_human_readable_time(duration);
++ printf(" - ");
++ print_human_readable_byte_count(bps);
++ printf("/s\n");
++
+ fflush(stdout);
++
+ vmar->clusters_read_per = percent;
++ last_time = duration;
++ last_size = vmar->clusters_read*VMA_CLUSTER_SIZE;
+ }
+ }
+
@@ -881,11 +903,17 @@ index 0000000000..2b1d1cdab3
+
+ if (verbose) {
+ if (vmar->clusters_read) {
-+ printf("total bytes read %zd, sparse bytes %zd (%.3g%%)\n",
-+ vmar->clusters_read*VMA_CLUSTER_SIZE,
-+ vmar->zero_cluster_data,
-+ (double)(100.0*vmar->zero_cluster_data)/
-+ (vmar->clusters_read*VMA_CLUSTER_SIZE));
++ double sparse_percent = (double)(100.0*vmar->zero_cluster_data) /
++ (vmar->clusters_read*VMA_CLUSTER_SIZE);
++ time_t duration = time(NULL) - vmar->start_time;
++
++ printf("Finished restoring ");
++ print_human_readable_byte_count(vmar->clusters_read*VMA_CLUSTER_SIZE);
++ printf(" bytes in ");
++ print_human_readable_time(duration);
++ printf(" with ");
++ print_human_readable_byte_count(vmar->zero_cluster_data);
++ printf(" of sparse data. (%.3g%%)\n", sparse_percent);
+
+ int64_t datasize = vmar->clusters_read*VMA_CLUSTER_SIZE-vmar->zero_cluster_data;
+ if (datasize) { // this does not make sense for empty files
@@ -918,6 +946,44 @@ index 0000000000..2b1d1cdab3
+ return vma_reader_restore_full(vmar, -1, verbose, true, errp);
+}
+
++void print_human_readable_time(int seconds) {
++ int days, hours, mins;
++
++ days = seconds / 86400;
++ seconds = seconds % 86400;
++
++ hours = seconds / 3600;
++ seconds = seconds % 3600;
++
++ mins = seconds / 60;
++ seconds = seconds % 60;
++
++ if (days)
++ printf("%d d ", days);
++ if (hours)
++ printf("%d h ", hours);
++ if (mins)
++ printf("%d m ", mins);
++ printf("%d s", seconds);
++}
++
++/* This should correctly display values up to 9,2 Ebibytes*/
++void print_human_readable_byte_count(int64_t value) {
++ double calculated = (double)value;
++ const char* units = "KMGTPE";
++ char unit;
++
++ int maxUnit = 0;
++ if (value > 1023) {
++ maxUnit = (int)(log(value)/log(1024));
++ calculated = value / pow(1024, maxUnit);
++ unit = units[maxUnit - 1];
++ printf("%.2f %ciB", calculated, unit);
++ } else {
++ printf("%zd B", (int64_t)calculated);
++ }
++}
+\ No newline at end of file
diff --git a/vma-writer.c b/vma-writer.c
new file mode 100644
index 0000000000..11d8321ffd
@@ -1716,10 +1782,10 @@ index 0000000000..11d8321ffd
+}
diff --git a/vma.c b/vma.c
new file mode 100644
-index 0000000000..df542b7732
+index 0000000000..781b5bf700
--- /dev/null
+++ b/vma.c
-@@ -0,0 +1,851 @@
+@@ -0,0 +1,857 @@
+/*
+ * VMA: Virtual Machine Archive
+ *
@@ -1802,8 +1868,14 @@ index 0000000000..df542b7732
+ if (strcmp(di->devname, "vmstate") == 0) {
+ printf("VMSTATE: dev_id=%d memory: %zd\n", i, di->size);
+ } else {
++ /* Information that is needed in qemu-server (PVE::QemuServer.pm)
++ Change only if you know what you are doing */
+ printf("DEV: dev_id=%d size: %zd devname: %s\n",
+ i, di->size, di->devname);
++
++ printf("Info: dev_id=%d size: ", i);
++ print_human_readable_byte_count(di->size);
++ printf(" devname: %s\n", di->devname);
+ }
+ }
+ }
@@ -2573,10 +2645,10 @@ index 0000000000..df542b7732
+}
diff --git a/vma.h b/vma.h
new file mode 100644
-index 0000000000..c895c97f6d
+index 0000000000..c4867b8584
--- /dev/null
+++ b/vma.h
-@@ -0,0 +1,150 @@
+@@ -0,0 +1,153 @@
+/*
+ * VMA: Virtual Machine Archive
+ *
@@ -2726,4 +2798,7 @@ index 0000000000..c895c97f6d
+ Error **errp);
+int vma_reader_verify(VmaReader *vmar, bool verbose, Error **errp);
+
++void print_human_readable_time(int);
++void print_human_readable_byte_count(int64_t);
++
+#endif /* BACKUP_VMA_H */
--
2.30.2
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