Re: BUG #5176: database recovery produces infinite loop

"Helge Milde" <helge@monsternett.no> writes:
> It seems the recovery process is failing; doing a strace on the 'postgres:
> startup process' pid, I see this:

> -- strace log start ---
> Process 29888 attached - interrupt to quit
> close(14)                               = 0
> open("pg_clog/021B", O_RDWR|O_CREAT|O_LARGEFILE, 0600) = 14
> _llseek(14, 245760, [245760], SEEK_SET) = 0
> write(14, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 8192)
> = 8192
> fsync(14)                               = 0
> close(14)                               = 0
> open("pg_clog/021B", O_RDWR|O_CREAT|O_LARGEFILE, 0600) = 14
> _llseek(14, 245760, [245760], SEEK_SET) = 0
> write(14, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 8192)
> = 8192
> fsync(14)                               = 0
> close(14)                               = 0
> -- strace log end ---

> This repeats infinetly.

Hmm, can you attach to that process with gdb and collect a few stack
traces to show where it's looping?  This isn't a symptom we've seen
before, AFAIR.

            regards, tom lane