I use svnadmin hotcopy --incremental
command to create backup. Subversion 1.9.5. It was discovered that this command recreates already backuped revisions files which size exceeds e.g. 120kb in directory db/revs/.
Backup log (1st backup was made to empty folder, next ones to the same folder):
C:\Users\Администратор.WIN-DBM2OE9OJ54>svnadmin hotcopy D:\Repositories\Sandbox D:\Test --incremental
* Copied revision 0.
* Copied revision 1.
* Copied revision 2.
* Copied revision 3.
* Copied revision 4.
* Copied revision 5.
* Copied revision 6.
* Copied revision 7.
* Copied revision 8.
* Copied revision 9.
* Copied revision 10.
* Copied revision 11.
* Copied revision 12.
* Copied revision 13.
* Copied revision 14.
* Copied revision 15.
* Copied revision 16.
* Copied revision 17.
* Copied revision 18.
* Copied revision 19.
* Copied revision 20.
* Copied revision 21.
* Copied revision 22.
* Copied revision 23.
* Copied revision 24.
* Copied revision 25.
* Copied revision 26.
* Copied revision 27.
* Copied revision 28.
* Copied revision 29.
* Copied revision 30.
* Copied revision 31.
* Copied revision 32.
* Copied revision 33.
* Copied revision 34.
* Copied revision 35.
* Copied revision 36.
* Copied revision 37.
* Copied revision 38.
* Copied revision 39.
* Copied revision 40.
* Copied revision 41.
* Copied revision 42.
* Copied revision 43.
* Copied revision 44.
* Copied revision 45.
* Copied revision 46.
* Copied revision 47.
* Copied revision 48.
* Copied revision 49.
* Copied revision 50.
* Copied revision 51.
* Copied revision 52.
* Copied revision 53.
* Copied revision 54.
* Copied revision 55.
C:\Users\Администратор.WIN-DBM2OE9OJ54>svnadmin hotcopy D:\Repositories\Sandbox D:\Test --incremental
* Copied revision 14.
* Copied revision 21.
* Copied revision 22.
C:\Users\Администратор.WIN-DBM2OE9OJ54>svnadmin hotcopy D:\Repositories\Sandbox D:\Test --incremental
* Copied revision 14.
* Copied revision 21.
* Copied revision 22.
And so on with each next svnadmin hotcopy --incremental
command. Binary comparison revision 14, 21, 22 files of original repository and backup gives equal result. What is the reason of this strange behaviour?