On Mon, Oct 31, 2011 at 5:40 PM, Pavel Ivanov <paiva...@gmail.com> wrote:
> > Error code 522 is SQLITE_IOERR_SHORT_READ. It is generated here: > > > > http://www.sqlite.org/src/artifact/07acbb3e074e?ln=3012 > > > > SQLite was trying to read N bytes and got back M byes where M>0 and M<N. > > Could it be that N bytes cannot be read atomically and operation was > interrupted in the middle by some signal? This scenario can explain > short read even if database is not truncated or corrupted. > If an interrupt occurs that stops the read before it can complete, then the read should be tried again. http://www.sqlite.org/src/artifact/07acbb3e074e?ln=2968 > > > Pavel > > > On Mon, Oct 31, 2011 at 5:31 PM, Richard Hipp <d...@sqlite.org> wrote: > > On Mon, Oct 31, 2011 at 5:01 PM, Korey Calmettes < > kcalmet...@icontime.com>wrote: > > > >> Hello, > >> > >> We are having a random problem with our system that has be puzzled at > >> this point. > >> > >> First a little background. We have an embedded system running an ARM > >> processor and JFFS file system. We are running 3.7.7.1. I e-mailed > >> about a month ago about enabling WAL on our system. Found out that I > >> needed to set SQLITE_SHM_DIRECTORY to our tmpfs file system when > >> compiling as JFFS doesn't support shared mmap files. > >> > >> This has been working fine, however throughout our testing, we have been > >> hitting a problem. It seems that some tables are no longer accessible > >> giving a Disk I/O Error. I logged into the command line interface and > >> replicated the problem. I ran ".log stdout" and here are the results. > >> > >> sqlite> select password from auth; > >> (522) statement aborts at 7: [select password from auth;] > >> Error: disk I/O error > >> > >> However access to other tables will work without any problems. > >> > > > > Error code 522 is SQLITE_IOERR_SHORT_READ. It is generated here: > > > > http://www.sqlite.org/src/artifact/07acbb3e074e?ln=3012 > > > > SQLite was trying to read N bytes and got back M byes where M>0 and M<N. > > > > Perchance is your database file truncated? What happens when you run > > "PRAGMA integrity_check" on the database? What is the page size of your > > database? > > > > > > > >> > >> I searched for how to read the log without success. I am hopeful that > >> someone would be able to tell me what's going on. > >> > >> Korey > >> _______________________________________________ > >> sqlite-users mailing list > >> sqlite-users@sqlite.org > >> http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > >> > > > > > > > > -- > > D. Richard Hipp > > d...@sqlite.org > > _______________________________________________ > > sqlite-users mailing list > > sqlite-users@sqlite.org > > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > > > _______________________________________________ > sqlite-users mailing list > sqlite-users@sqlite.org > http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users > -- D. Richard Hipp d...@sqlite.org _______________________________________________ sqlite-users mailing list sqlite-users@sqlite.org http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users
