Re: [f2fs-dev] Discard issue

[Chao Yu <yuchao0@huawei.com>]

Hi Jaegeuk,

On 2020/5/26 9:59, Jaegeuk Kim wrote:
> Hi Chao,
> 
> I'm hitting segment.c:1065 when running longer fsstress (1000s) with error

(1000s) do you mean time in single round or total time of multi rounds?

> injection. Do you have any issue from your side?

I haven't hit that before, in my test, in single round, fsstress won't last long
time (normally about 10s+ for each round).

Below is por_fsstress() implementation in my code base:

por_fsstress()
{
        _fs_opts

        while true; do
                ltp/fsstress -x "echo 3 > /proc/sys/vm/drop_caches" -X 10 -r -f fsync=8 -f sync=0 -f write=4 -f dwrite=2 -f truncate=6 -f allocsp=0 -f bulkstat=0 -f bulkstat1=0 -f freesp=0 -f zero=1 -f collapse=1 -f insert=1 -f resvsp=0 -f unresvsp=0 -S t -p 20 -n 200000 -d $TESTDIR/test &
                sleep 10
                src/godown $TESTDIR
                killall fsstress
                sleep 5
                umount $TESTDIR
                if [ $? -ne 0 ]; then
                        for i in `seq 1 50`
                        do
                                umount $TESTDIR
                                if [ $? -eq 0]; then
                                        break
                                fi
                                sleep 5
                        done
                fi
                echo 3 > /proc/sys/vm/drop_caches
                _fsck
                _mount f2fs
                rm $TESTDIR/testfile
                touch $TESTDIR/testfile
                umount $TESTDIR
                _fsck
                _mount f2fs
                _rm_50
        done
}

Did you update this code?

Could you share more test configuration, like mkfs option, device size, mount option,
new por_fsstress() implementation if it exists? I can try to reproduce this issue
in my env.

Thanks,

> 
> Thanks,
> .
> 


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