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Re: [Moosefs-users] Append and seek while writing functionality
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From: Stas O. <sta...@gm...> - 2010-06-14 15:56:35
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Actually in more detail: 1) Pause writing of new file, skip to any position, and update the data. 2) Open existing file, skip to any position and update the data. Regards. 2010/6/14 Stas Oskin <sta...@gm...> > Hi. > > Thanks for the explanation. > > So this covers appending, but can a write operation to file pause, jump to > file start for example, and update some data? > > Regards. > > 2010/6/14 Michał Borychowski <mic...@ge...> > > MooseFS fully supports appending to a file and writing to any position of >> a file. It also supports creating sparse files. >> >> >> >> Two independent processes / machines may write in parallel to the same >> file at different positions. If two positions are located in different >> chunks (pos1 / 64Mi != pos2 / 64Mi) the writing process would be run at >> normal speed; if two positions are in the same chunk you can expect a >> substantial loss of writing speed (due to chunk lock for writing). >> >> >> >> >> >> Kind regards >> >> Michał Borychowski >> >> MooseFS Support Manager >> >> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ >> >> Gemius S.A. >> >> ul. Wołoska 7, 02-672 Warszawa >> >> Budynek MARS, klatka D >> >> Tel.: +4822 874-41-00 >> >> Fax : +4822 874-41-01 >> >> >> >> >> >> >> >> *From:* Stas Oskin [mailto:sta...@gm...] >> *Sent:* Thursday, June 10, 2010 2:13 PM >> *To:* moo...@li... >> *Cc:* MooseFS >> *Subject:* [Moosefs-users] Append and seek while writing functionality >> >> >> >> Hi. >> >> Does MooseFS supports append functionality? >> >> Also, does it support the ability to seek file being it's being written >> and write data in other place (like regular file system)? >> >> Thanks! >> > > |
