On Sat, May 23, 2009 at 10:25 AM, Matthias Schniedermeyer <[email protected]> wrote: > On 23.05.2009 08:44, Ming Zhang wrote: >> > >> > No. The block size is NEVER relevant for a copy via rsync, bits are bits >> > regardless of you copying them bit by bit or in larger groups. >> > >> >> please have a read >> http://www.oracle.com/technology/documentation/berkeley-db/db/ref/transapp/archival.html >> see the db page size issue when copy a online db. > > The meantioned utility to create the copy is NOT rsync, it's hotbackup. > > After the hotbackup is done, you can do whatever you like with the > created copy. In your case you want to transfer it to another computer.
that is what i meant. i have DB that in hundreds of GBs. copy it out first by db_hotbackup take time and space. why not combine db_hotbackup and rsync to do 1 step work? > >> > The man-page of db_hotbackup meantions (indirectly) that the backup is >> > without cooperation from the application and the database content may be >> > inconsistent. Not from the technical standpoint of BDB, but from the >> > high-level application standpoint. The application has to use >> > transactions correctly so that the database-content is consistent at any >> > point in time. >> > >> > In short: If your application does correcy transactions, hotbackup >> > appears to be a useable variant of the "snapshot"-db-backup type. >> > >> >> please not only read the man page of db_hotbackup, but also read the >> source code and the related BDB reference guide. then u will know that >> db_hotbackup do some db related work and then begin to copy file use >> posix read/write. and it read at multiple DB size. > > -- > > > > > Bis denn > > -- > Real Programmers consider "what you see is what you get" to be just as > bad a concept in Text Editors as it is in women. No, the Real Programmer > wants a "you asked for it, you got it" text editor -- complicated, > cryptic, powerful, unforgiving, dangerous. > > -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
