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ee77f27db0
State file handling was invalid. When a file was moved and re-created rsyslog could use the file_id if the new file to write the old files' state file. This could make the file reader stuck until it reached the previous offset. Depending on file sizes this could never happen AND would cause large message loss. This situation was timing dependent (a race) and most frequently occurred under log rotation. In polling mode the bug was less likely, but could also occur. closes: https://github.com/rsyslog/rsyslog/issues/3465 closes: https://github.com/rsyslog/rsyslog/issues/3468
46 lines
1.5 KiB
Bash
Executable File
46 lines
1.5 KiB
Bash
Executable File
#!/bin/bash
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# added 2019-02-28 by rgerhards
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# This is part of the rsyslog testbench, licensed under ASL 2.0
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. ${srcdir:=.}/diag.sh init
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generate_conf
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add_conf '
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global(workDirectory="'${RSYSLOG_DYNNAME}'.spool")
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module(load="../plugins/imfile/.libs/imfile")
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input(type="imfile" tag="file:" file="./'$RSYSLOG_DYNNAME'.input")
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template(name="outfmt" type="string" string="%msg:F,58:2%\n")
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if $msg contains "msgnum:" then
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action(type="omfile" file=`echo $RSYSLOG_OUT_LOG` template="outfmt")
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'
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# generate a very small file so that imfile cannot generate file_id
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./inputfilegen -m1 > $RSYSLOG_DYNNAME.input
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startup
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shutdown_when_empty
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wait_shutdown
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seq_check 0 0 # check we got the messages correctly
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# and also check state file name is correct:
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inode=$(get_inode "$RSYSLOG_DYNNAME.input")
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printf '\nSTAGE 1 OK - inode-only state file properly generated\n\n'
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# now add small amount of data, so that file_id can still not be
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# generated. Check that state file remains valid.
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# rsyslog must update state file name AND remove inode-only one.
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./inputfilegen -m3 -i1 >> $RSYSLOG_DYNNAME.input
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startup
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wait_file_lines "$RSYSLOG_OUT_LOG" 4
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shutdown_when_empty
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wait_shutdown
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seq_check 0 3 # check we got the messages correctly
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# and verify the state files are correct
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if [ ! -f "$RSYSLOG_DYNNAME.spool/imfile-state:$inode" ]; then
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printf 'FAIL: STAGE 2 state file name incorrect,\nexpected \"%s\"\nspool dir is:\n' \
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$RSYSLOG_DYNNAME.spool/imfile-state:$inode
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ls -l $RSYSLOG_DYNNAME.spool
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error_exit 1
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fi
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printf '\nSTAGE 2 OK - inode-only state file properly maintained\n\n'
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exit_test
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