When using vfat and running rsync twice, this is the diff in the stats output:
--- log1.vfat 2019-10-08 11:43:04.381667860 -0300
+++ log2.vfat 2019-10-08 11:43:17.609728451 -0300
@@ -1,5 +1,5 @@
Number of files: 78 (reg: 77, dir: 1)
-Number of created files: 77 (reg: 77)
+Number of created files: 0
Number of deleted files: 0
Number of regular files transferred: 77
Total file size: 3,990,531 bytes
@@ -12,6 +12,6 @@
Total bytes sent: 3,996,271
Total bytes received: 8,830
-sent 3,996,271 bytes received 8,830 bytes 534,013.47 bytes/sec
+sent 3,996,271 bytes received 8,830 bytes 2,670,067.33 bytes/sec
total size is 3,990,531 speedup is 1.00
rsync error: some files/attrs were not transferred (see previous errors) (code
23) at main.c(1196) [sender=3.1.2]
As expected, the files are transferred again, because rsync couldn't set
the permissions or ownership. These concepts don't exist in vfat.
When using ext4, the same rsync command, the diff between the two runs shows a
different story:
--- log1.ext4 2019-10-08 11:49:01.687411326 -0300
+++ log2.ext4 2019-10-08 11:49:11.795461543 -0300
@@ -1,16 +1,16 @@
Number of files: 78 (reg: 77, dir: 1)
-Number of created files: 77 (reg: 77)
-Number of deleted files: 1 (dir: 1)
-Number of regular files transferred: 77
+Number of created files: 0
+Number of deleted files: 0
+Number of regular files transferred: 0
Total file size: 3,990,531 bytes
-Total transferred file size: 3,990,531 bytes
-Literal data: 3,990,531 bytes
+Total transferred file size: 0 bytes
+Literal data: 0 bytes
Matched data: 0 bytes
File list size: 0
File list generation time: 0.001 seconds
File list transfer time: 0.000 seconds
-Total bytes sent: 3,996,271
-Total bytes received: 1,504
+Total bytes sent: 1,598
+Total bytes received: 19
-sent 3,996,271 bytes received 1,504 bytes 7,995,550.00 bytes/sec
-total size is 3,990,531 speedup is 1.00
+sent 1,598 bytes received 19 bytes 3,234.00 bytes/sec
+total size is 3,990,531 speedup is 2,467.86
The rsync command I used was:
rsync -v -a -r -W -p -o -g -t --delete --stats /testdata/
/media/andreas/dataext4/
/testdata was populated with a copy of all files in /usr/bin that start
with "b*". I don't think the --exclusion parameters you used play a
factor here.
Can you please verify the target filesystem in your test case, and if
rsync reported errors? And there are other scenarios, like outlined in
comment #2.
I guess, to summarize, we need a testcase. I showed you two cases with
pendrives (vfat, and ext4), where what you describe does NOT happen.
** Changed in: rsync (Ubuntu)
Status: New => Incomplete
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Title:
rsync sends everything, not just changes
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