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avoid that a system crash can cause messages to be propagated twice

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fdatasync() the journal after creating the pair record and recording
the TUID, but before the message propagation actually starts.

all other writes to the journal are not flushed, as they will at worst
cause some unnecessary network traffic without visible effect.
This commit is contained in:
Oswald Buddenhagen 2012-09-15 14:38:39 +02:00
parent a326bf2f58
commit 49223b2df2
1 changed files with 1 additions and 0 deletions
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src/sync.c
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@ -1202,6 +1202,7 @@ box_loaded( int sts, void *aux )
cv->srec = srec;
cv->msg = tmsg;
Fprintf( svars->jfp, "# %d %d %." stringify(TUIDL) "s\n", srec->uid[M], srec->uid[S], srec->tuid );
fdatasync( fileno( svars->jfp ) );
debug( " -> %sing message, TUID %." stringify(TUIDL) "s\n", str_hl[t], srec->tuid );
if (copy_msg( cv ))
return;