similar to: rsync algorithm

Hi everyone, I'm trying to implement calculation of overall progress for rsync. Currently it shows progress only on per file basis. So I need for the feature size of all files to be synced - this is obvious and already exists in the code. I can calculate size of transferred files, but I can't find the piece of code that is responsible for calculation of checksums. I don't understand

On 6/30/07, Wayne Davison <wayned@samba.org> committed: > Added Files: > checksum-xattr.diff > Log Message: > A simple patch that lets rsync use cached checksum values stored in > each file's extended attributes. A perl script is provided to create > and update the values. Wayne, You should be aware of two drawbacks of caching checksums in xattrs: First,

Hi all ! I am currently trying to find a smart way to long-term-backup my data. I currently do link-dest-updates to an external hdd. However, I am concerned about data corruption in the backup or the original, i.e. corruption of the data inside the files. Thus i am wondering if there is a way to check the integrity of the backups on the external disk. i.e. to avoid data degradation for

We would like to use rsync to deploy large data files over an (all to often) faulty WAN connection. In the past, we've used scp and, when a transfer got interrupted, it would have to be restarted from scratch. This is why we've begun experimenting with rsync. The problem we're having with rsync stems from its use of checksums. The target systems we're deploying data to are highly

Before anyone yells at me, yes, you can use rsync's --checksum to detect (and fix) files that are incorrect despite having correct timestamps and sizes. This would mean that a previous rsync had been corrupted not the current one. But it is important to note that this would only be reported to you if you also use --itemize-changes and what to look for (a file with a c but not an s or a t).

hce <webmail.hce@gmail.com> wrote: > I built the samba from source samba-3.0.26a on FC6. But when I run > "nmbd -F --debuglevel=5 --configfile=/home/test/smb.conf > --log-basename=/home/test/log.txt", nothing happens. The process is > not there, the log file is not created. What could I be missing here? Not really samba-specific, but whenever I need to track down

Hi, I am using rsync to backup files. Is it possible to specify an option not to delete files from backup directory if the files are deleted from source? In that way, I can always keep something I may or may not need in the backup disk, but remove it from a work computer. Thank you. Kind Regards. hce

Hello, Since English is my second language, forgive me for any typing errors. I have been studying rsync for my academic project. I learned quite a lot but I need little help. My question is, does rsync sends all checksum of a file at once or in batches. For example suppose I have a 2 GB file, so after generating checksum on receiver side, does the receiver sends all the generated checksum to the

Hi I am using "rsync" to send files from a source machine to a remote machine as one typically does. I would like to clarify that the "-c" option will cause the checksum on the receiving end to be created by reading the already written file and NOT the data stream on the receiving end. This would help in catching disk I/O errors if the checksum is done on the file on disk.

Hello everyone, I have a question regarding syncing of large files. We have a setup where we need to sync a 500GB file with changes in random blocks. The changes are made in a manner, so moving blocks is not probable (actually it will never happen). As I understand it, the way rsync works is: - remote server calculates all checksum blocks and transmits these to client - local client calculates

I thought rsync, would calculate checksums of large files that have changed timestamps or filesizes, and send only the chunks which changed. Is this not correct? My goal is to come up with a reasonable (fast and efficient) way for me to daily incrementally backup my Parallels virtual machine (a directory structure containing mostly small files, and one 20G file) I?m on OSX 10.5, using rsync

Hi, This is a newbie type'o'question so I'm most probably talking about something I know nothing about ;) Would it be possible to archive files on a removable drive, save the checksums for the archived files, and later compare existing files against the saved checksums without plugging in the removable drive? I imagine in theory this would allow for an easy incremental-backup-to-CD

This is a suggestion for adding to rsync an option "--checksum-path=PROGRAM". Once this option is given, provided it is accompained by option "--checksum", both the receiving and sending side of rsync would compute checksums calling PROGRAM, instead of the usual checksum program. Why is this usefull? Suppose I have two collections of MP3 files at different locations which I

https://bugzilla.samba.org/show_bug.cgi?id=5482 Summary: apply the rsync comparison algorithm specially to .mov and .mp4 files Product: rsync Version: 3.0.2 Platform: All OS/Version: All Status: NEW Severity: enhancement Priority: P3 Component: core AssignedTo: wayned@samba.org

Using rsync-2.4.6: Is a times difference supposed to cause a write? Also -t vs -I makes no difference. Below shows the problem, I think: [dmahurin@pc16 /tmp]$ mkdir x y [dmahurin@pc16 /tmp]$ cp /bin/ls x [dmahurin@pc16 /tmp]$ ls -l x/ls -rwxr-xr-x 1 dmahurin users 43024 Nov 13 12:46 x/ls [dmahurin@pc16 /tmp]$ rsync -vrtW x/ y building file list ... done ./ ls ./ wrote 43112 bytes

Hi, I had a query wrt the topic of rsync's rolling checksum algorithm: If I have a fileA that is a database file of size 100 MB on local machine. I back it up first time (full backup) using rsync to the server assuming block_size to be 30 KB and --compress option to compress data as it is transferred. Next time, I modify the fileA with another 100 MB new contents towards the end

https://bugzilla.samba.org/show_bug.cgi?id=13735 Bug ID: 13735 Summary: Synchronize files when the sending side has newer change times while modification times and sizes are identical on both sides Product: rsync Version: 3.1.3 Hardware: All OS: All Status: NEW

Hello, i`m using rsync to sync large virtual machine files from one esx server to another. rsync is running inside the so called "esx console" which is basically a specially crafted linux vm with some restrictions. the speed is "reasonable", but i guess it`s not the optimum - at least i don?t know where the bottleneck is. i`m not using ssh as transport but run rsync in

I noticed that rsync is happy to hard-link a device node from a --link-dest dir even if its mtime differs from that of the source device node and --times is given. Is this behavior expected? It seems to break the rule that a difference in preserved attributes disqualifies a hard link. To see the behavior, run the following as root: mkdir src dest basis mknod src/null c 1 3 sleep 1 mknod

We use rsync to update an nfs server. After an update, we noticed that a large number of clients didn't see the updated data. It took me a while to be able to reliably reproduce this problem, but it happens on old and new versions of rysnc. It also happens across all the platforms we use here (sun/linux/netapp). This shows the problem: [Note my home directory is NFS mounted]