Re: [Qemu-devel] [PATCH v2 2/2] qemu-ga: sample fsfreeze hooks

[Tomoki Sekiyama <tomoki.sekiyama.qu@hitachi.com>]

Hi Eric,
thank you for the review again.

On 2012/11/13 7:16, Eric Blake wrote:
> On 11/12/2012 02:32 AM, Tomoki Sekiyama wrote:
>> Adds sample hook scripts for --fsfreeze-hook option of qemu-ga.
>>   - fsfreeze-hook : execute scripts in fsfreeze-hook.d/
>>   - fsfreeze-hook.d.sample/mysql-flush.sh : quiesce MySQL before snapshot
>>
>> Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama.qu@hitachi.com>
>> ---
> 
>> +LOGFILE=/var/log/qga-fsreeze-hook.log
> 
> s/fsreeze/fsfreeze/

Oops...

>> +# Iterate executables in directory "fsfreeze-hook.d" with the specified args
>> +[ ! -d "$FSFREEZE_D" ] && exit 1
>> +for file in "$FSFREEZE_D"/* ; do
>> +    is_ignored_file "$file" && continue
>> +    [ -x "$file" ] || continue
>> +    echo $(date) ": execute $file $@" >>$LOGFILE
> 
> Put $(date) inside the ""; otherwise, single-digit days will be one
> character shorter due to IFS field splitting eating the double-space;
> and I don't like unaligned dates in logs.
> 
>> +    "$file" "$@" >>$LOGFILE 2>&1
>> +    STATUS=$?
>> +    echo $(date) ": $file finished with status=$STATUS" >>$LOGFILE
> 
> and again.

I will fix this.

>> +        INNODB_STATUS=$(mktemp /tmp/mysql-flush.XXXXXX)
>> +        [ $? -ne 0 ] && exit 2
>> +        trap "rm -f $INNODB_STATUS" SIGINT
>> +        while :; do
>> +            echo 'SHOW ENGINE INNODB STATUS \G' | $MYSQL > $INNODB_STATUS
> 
> 'echo' cannot portably be used with \.  Use 'printf' instead.

OK, I replace this with 'printf' (also in 'flush_and_wait' function).

-- 
Tomoki Sekiyama <tomoki.sekiyama.qu@hitachi.com>
Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory