[LU-15994] Fio io_uring failed with error=interrupted system call on Ubuntu 2204

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Severity: 3
• Assignee: Qian Yingjin
• Reporter: Qian Yingjin

Description

On the new Ubuntu 2204, fio with io_uring engine failed with the following error:

io_uring err=4/file:io_u.c:1845, func=io_u error, error=interrupted system call

The test script to reproduce this failure is as follows:

DIR="/mnt/lustre"
tdir="sanity-pcc.d102"
dir=$DIR/$tdir
file=$dir/$tfile
ioengine="io_uring"
numjobs=2
size=10M

fio --name=seqwrite --ioengine=$ioengine    \
        --bs=4K --direct=1 --numjobs=$numjobs   \
        --iodepth=64 --size=$size --filename=$file --rw=write ||
        error "fio seqwrite $file failed"
fio --name=seqread --ioengine=$ioengine     \
        --bs=4K --direct=1 --numjobs=$numjobs   \
        --iodepth=64 --size=$size --filename=$file --rw=read ||
        error "fio seqread $file failed"

However, this failure does not exist in the old Ubuntu 2004.
the new kernel for Ubuntu 2204 failed this test with -EINTR.

Issue Links

• is related to: LU-15399 Don't restart CLI IO for IOCB_NOWAIT direct IO