From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans Reiser Subject: Re: Was able to reproduce "cp: cannot stat file.x: Input/output error" Date: Sat, 07 Aug 2004 00:49:43 -0700 Message-ID: <41148997.4070404@namesys.com> References: <20040807065039.5BF4E15CBC@mail03.powweb.com> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: list-help: list-unsubscribe: list-post: Errors-To: flx@namesys.com In-Reply-To: <20040807065039.5BF4E15CBC@mail03.powweb.com> List-Id: Content-Type: text/plain; charset="iso-8859-1"; format="flowed" To: David Dabbs Cc: 'ReiserFS List' David Dabbs wrote: > =20 > >>-----Original Message----- >>From: Hans Reiser [mailto:reiser@namesys.com] >>Sent: Friday, August 06, 2004 11:16 PM >>To: David Dabbs >>Cc: 'Philippe Gramoull=E9'; 'ReiserFS List' >>Subject: Re: Was able to reproduce "cp: cannot stat file.x: Input/output >>error" >> >>David Dabbs wrote: >> >> =20 >> >>>i.e. >>> >>> "%.c", '`' + (char) rnd >>> >>>If you exceed 26 then you will generate filenames that may cause >>> =20 >>> >>problems. >> =20 >> >>> =20 >>> >>Problems that indicate reiser4 bugs or mongo bugs? >> >> =20 >> > >Mongo. The pipe character is not legal in a filename as an example. > >I think I have discovered the problem - unless there was a reason mongo was >issuing mount/unmount commands at the start/end of a mongo 'run' as well as >before/after _each phase_. I just removed the mount/unmount calls that >bracket each phase execution and I am not seeing the errors. In addition, >reiser4 is running much faster. For instance, with the 'extra' >mount/unmounts r4 reported a REAL TIME stats of approximately 700 & 40 for >CREATE and MKFILES. After removing the mount/un calls it is reporting 224 & >50 REAL TIME. > =20 > can you quote code more in these emails? >I will reboot and run a sequence of each of the filesystem configs overnig= ht >and see what happens. > >David > > > > > > =20 > Probably someone wanted to separate the measurement of the phases. It=20 has been a while since I read mongo.....