search for: rsync_csums

When I dont specify --block-size but have --write-batch=xxx, I get a xxx.rsync_csum file that is 76 Kbytes in size. The size of the file varies as the size of the "reference" file is varied. --stats showed matched data that is roughly 6 block lengths based on the square root of the newer file. I copy the original data back to the target directory so that I can repeat the experiment. I

...sync --read-batch=data -a -v -v dest/ ------- Additionally if i use the --files-from option with --write-batch and the given prefix is relative 3 of 4 files will be written to the src/ dir. The find in the shell script [2] gives the following: . ./src ./src/file1 ./src/data.rsync_flist ./src/data.rsync_csums ./src/data.rsync_delta ./dest ./dest/file1 ./data.tar.gz ./data.rsync_argvs --[2]-- #!/bin/bash DIR="testdir-$(date '+%Y%m%d%H%M%S')" mkdir "$DIR" && cd "$DIR" && mkdir src dest && (cd src && dd if=/dev/zero of=file1 bs=1024 co...

...6.6.31.zip -rw-r--r-- 1 0 0 407416499 Sep 29 13:39 CD-ROM-V6.6.32.zip resulting in: -rwx------ 1 0 0 53 Sep 29 16:29 rs.rsync_argvs* -rw------- 1 0 0 90 Sep 29 16:29 rs.rsync_flist -rw------- 1 0 0 165998 Sep 29 16:29 rs.rsync_csums -rw------- 1 0 0 26634899 Sep 29 16:30 rs.rsync_delta dr-xr-xr-x 4 0 0 453 Sep 29 16:30 ./ Trying to do a test fails. I do not not why: alfred:/Auslieferung/CD # sh rs.rsync_argvs send_files starting server_recv(2) starting pid=6353 get_local_name count=1 CD-...

...CS file: /cvsroot/rsync/batch.c,v retrieving revision 1.12 diff -u -r1.12 batch.c --- batch.c 24 Jan 2002 08:09:46 -0000 1.12 +++ batch.c 6 Feb 2002 19:47:57 -0000 @@ -8,55 +8,38 @@ #include "rsync.h" #include <time.h> -char rsync_flist_file[27] = "rsync_flist."; -char rsync_csums_file[27] = "rsync_csums."; -char rsync_delta_file[27] = "rsync_delta."; -char rsync_argvs_file[27] = "rsync_argvs."; - -char batch_file_ext[15]; - -int fdb; -int fdb_delta; -int fdb_open; -int fdb_close; +extern char *batch_prefix; struct file_list *batch_flist; -...

rsync+ is ready to go onto HEAD. Could Jos or somebody else who's used the feature before please prepare a few paragraphs for the manpage explaining how they work? Either send a patch to the .yo files or just plain text. Thanks, -- Martin

...to file size and acceptable failure rate. In the formulas, he assumes that the block size is square root of file size. I have done some benchmarking of rsync and for large files (ie. 1 -55 Gigbytes for example), the block size is larger than a square root of file size. This is based upon the xxxx.rsync_csums file size produced when you --write-batch=xxxx. I have done some calculations assuming that a check sum per block is 20 bytes (32 bits + 128 bits) and 24 bytes (assuming there is an extra 32 bits of overhead data) and the number of checksums appears to be square root of file size divided by a numbe...

...3784 bytes 178638.00 bytes/sec total size is 0 speedup is 0.00 _exit_cleanup(code=0, file=../rsync/main.c, line=625): about to call exit(0) lizzy:~/src/rsync-cvs/obj/test/rs% ls -l total 91 -rwx------ 1 jos staff 51 Sep 29 12:38 rs.rsync_argvs -rw------- 1 jos staff 3752 Sep 29 12:38 rs.rsync_csums -rw------- 1 jos staff 85507 Sep 29 12:38 rs.rsync_delta -rw------- 1 jos staff 79 Sep 29 12:38 rs.rsync_flist -rw-r--r-- 1 jos staff 180 Sep 29 12:37 x lizzy:~/src/rsync-cvs/obj/test/rs% ls -l .. total 1433 -rw-r--r-- 1 jos staff 436738 Sep 29 12:31 new.bak -rw-r--r-- 1 jos staf...

...f all the files of the level 0 backup and a second option to use the level n checksum to calculate the delta batch files for the level n+1 backup. After a deeper look into the batch mode I saw that it is too specific to that kind of application for which it has been written. The contents of the *.rsync_csums files seem to be always 1 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 4 0 0 0 0 0 0 0 5 ... instead of the real checksums. I think that the batch mode would be more useful (at least for the incremental backup) if it worked like rdiff: an option to save checksum, one to calculate and save the del...