Re: [BackupPC-users] Real Time View of What Is Being Copied
On Fri, Mar 4, 2022 at 2:39 PM Kenneth Porter wrote: > > rsync over the network should use compression. If you're doing it inside > ssh, then use ssh's compression, which is more reliable. The run of > nulls will be compressed down to a count and one null. Their transfer > will be almost instantaneous. > Yes, but it still goes through the motions of 'reading' what could potentially be many TB of data even from a small file with the filesystem delivering all those nulls. It has been a long time since I had that problem but it did in fact cause trouble at least with the rsync back then and slower CPUs. It could be that rsync tried to write them all at the other end too. -- Les Mikesell lesmikes...@gmail.com ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List:https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki:https://github.com/backuppc/backuppc/wiki Project: https://backuppc.github.io/backuppc/
Re: [BackupPC-users] Real Time View of What Is Being Copied
On 3/4/2022 7:21 AM, Les Mikesell wrote: Unix/Linux has something calle 'sparse' files used by some types of databases where you can seek far into a file and write without using/allocating any space up to that point. The file as stored may not be large but most tools to copy it will act as though the empty parts were filled with nulls. Rsync might handle them these days but may still take the time to send the stream of nulls. But in any case they are rarely used on Windows. rsync over the network should use compression. If you're doing it inside ssh, then use ssh's compression, which is more reliable. The run of nulls will be compressed down to a count and one null. Their transfer will be almost instantaneous. ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List:https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki:https://github.com/backuppc/backuppc/wiki Project: https://backuppc.github.io/backuppc/
Re: [BackupPC-users] Real Time View of What Is Being Copied
On Fri, Mar 4, 2022 at 7:16 AM G.W. Haywood via BackupPC-users wrote: > > Another possibility (and the only time I've ever seen this happen) is > that there might be a large file which is causing a timeout. It was > on a Linux box here, something went off the reservation and started > writing gigabytes of messages to a file called '.xsession-errors'. Unix/Linux has something calle 'sparse' files used by some types of databases where you can seek far into a file and write without using/allocating any space up to that point. The file as stored may not be large but most tools to copy it will act as though the empty parts were filled with nulls. Rsync might handle them these days but may still take the time to send the stream of nulls. But in any case they are rarely used on Windows. -- Les Mikesell lesmikes...@gmail.com ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List:https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki:https://github.com/backuppc/backuppc/wiki Project: https://backuppc.github.io/backuppc/
Re: [BackupPC-users] rsync ACL Support
On Thu, Mar 3, 2022 at 11:03 AM ralph strebbing wrote: > I'm attempting an upgrade to 4 now. So the upgrade to 4 works. Is there any reason that the Ubuntu/Debian repos aren't using the latest? ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List:https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki:https://github.com/backuppc/backuppc/wiki Project: https://backuppc.github.io/backuppc/
Re: [BackupPC-users] Real Time View of What Is Being Copied
Hi there, On Fri, 4 Mar 2022, Les Mikesell wrote: On Mon, Feb 28, 2022 at 3:34 PM Akibu Flash wrote: > > I backup a couple of Windows machines to a linux machine via rsync. > However, the backup for one of the Windows machines never finishes > and results in a partial backup. In the CGI user interface Count > column, the backup always seems to hang at 311941 for hours ... > > Is there a way to start a backup from the command line and have the > screen show what in real time is actually being backed up? Not exactly what you are asking for, but since the problem target is windows you are probably hitting a file that windows has locked, and the solution might be to use windows VSS snapshots. Another possibility (and the only time I've ever seen this happen) is that there might be a large file which is causing a timeout. It was on a Linux box here, something went off the reservation and started writing gigabytes of messages to a file called '.xsession-errors'. On Linux, by default, filenames beginning with a dot aren't displayed by the command 'ls -l' so it took longer to spot than it should have. :/ -- 73, Ged. ___ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List:https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki:https://github.com/backuppc/backuppc/wiki Project: https://backuppc.github.io/backuppc/
