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Re: Live Fille System Backup

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On Fri, 05 May 2017, Sergei G wrote:
> it would be naive at best to think that busy files can be handled at
> application level.   No, rsync cannot handle the problem of entire file
> system dump.  Neither it is safe to handle all special file cases.  I am
> thinking about sparse files (if Linux has those).

Yes, Linux has sparse files.  And yes, rsync can deal with sparse files,
check its documentation.  It can also deal with many "special files",
extended attributes and ACLs properly, if directed to do so.

Also, shortcut "file/inode changed" detection can break on Debian
*system* directories.  *You have been warned*.  Either always do a full
backup of those, or use something that actually _always_ checksums the
contents (such as rsync -c), when doing dedup or incremental backups.

As for live data such as running database backends, or active logs, you
have to snapshot/quiece such applications for a rsync backup just like
you'd have to do for filesystem or device snapshotting, or any other
non-application-level backup.

-- 
  Henrique Holschuh

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Live Fille System Backup Sergei G <sergeig.public@gmail.com> - 2017-05-05 01:20 +0200
  Re: Live Fille System Backup Anders Andersson <pipatron@gmail.com> - 2017-05-05 03:50 +0200
    Re: Live Fille System Backup Sergei G <sergeig.public@gmail.com> - 2017-05-05 06:50 +0200
      Re: Live Fille System Backup Dejan Jocic <jodejka@gmail.com> - 2017-05-05 09:00 +0200
        Re: Live Fille System Backup Sergei G <sergeig.public@gmail.com> - 2017-05-05 22:40 +0200
          Re: Live Fille System Backup Sergei G <sergeig.public@gmail.com> - 2017-05-05 23:20 +0200
            Re: Live Fille System Backup Henrique de Moraes Holschuh <hmh@debian.org> - 2017-05-06 00:00 +0200
              Re: Live Fille System Backup conover@rahul.net (John Conover) - 2017-05-06 01:30 +0200
                Re: Live Fille System Backup Henrique de Moraes Holschuh <hmh@debian.org> - 2017-05-06 02:30 +0200
          Re: Live Fille System Backup Henrique de Moraes Holschuh <hmh@debian.org> - 2017-05-06 00:00 +0200
          Re: Live Fille System Backup <tomas@tuxteam.de> - 2017-05-06 08:00 +0200
            Re: Live Fille System Backup Dan Ritter <dsr@randomstring.org> - 2017-05-06 12:50 +0200
              Re: Live Fille System Backup tomas@tuxteam.de - 2017-05-06 16:00 +0200
                Re: Live Fille System Backup Henrique de Moraes Holschuh <hmh@debian.org> - 2017-05-06 19:20 +0200
                Re: Live Fille System Backup <tomas@tuxteam.de> - 2017-05-06 21:50 +0200
                Re: Live Fille System Backup Henrique de Moraes Holschuh <hmh@debian.org> - 2017-05-06 23:10 +0200
                Re: Live Fille System Backup Ben Caradoc-Davies <ben@transient.nz> - 2017-05-07 01:00 +0200
                Re: Live Fille System Backup <tomas@tuxteam.de> - 2017-05-07 12:00 +0200
                Re: Live Fille System Backup rhkramer@gmail.com - 2017-05-07 14:50 +0200
                Re: Live Fille System Backup <tomas@tuxteam.de> - 2017-05-07 17:00 +0200
                Re: Live Fille System Backup Sergei G <sergeig.public@gmail.com> - 2017-05-09 00:50 +0200
                Re: Live Fille System Backup Sergei G <sergeig.public@gmail.com> - 2017-05-09 01:10 +0200
                Re: Live Fille System Backup tomas@tuxteam.de - 2017-05-09 10:00 +0200
                Re: Live Fille System Backup Greg Wooledge <wooledg@eeg.ccf.org> - 2017-05-09 14:10 +0200
                Re: Live Fille System Backup <tomas@tuxteam.de> - 2017-05-09 14:30 +0200
                Re: Live Fille System Backup Curt <curty@free.fr> - 2017-05-09 15:20 +0200
                Re: Live Fille System Backup Curt <curty@free.fr> - 2017-05-09 14:10 +0200
                Re: Live Fille System Backup <tomas@tuxteam.de> - 2017-05-09 14:30 +0200
  Re: Live Fille System Backup <tomas@tuxteam.de> - 2017-05-05 09:20 +0200
  Re: Live Fille System Backup Bob Weber <bobrweber@gmail.com> - 2017-05-06 01:00 +0200
  Re: Live Fille System Backup Stefan Monnier <monnier@iro.umontreal.ca> - 2017-05-12 15:00 +0200
    Re: Live Fille System Backup Sergei G <sergeig.public@gmail.com> - 2017-05-25 05:40 +0200

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