Re: LVM2 test breakage

[Su Yue <l@damenly.org>]

On Tue 20 May 2025 at 09:53, Yu Kuai <yukuai1@huaweicloud.com> 
wrote:

> Hi,
>
> 在 2025/05/20 9:45, Yu Kuai 写道:
>> dd if=/dev/zero of=/mnt/test/test.img bs=1048576 count=0 
>> seek=5000000003
>> dd: failed to truncate to 5242880003145728 bytes in output file
>> '/mnt/test/test.img': File too large
>> And this is because ext4 has hard limit of file size, 2^48:
>> fs/ext4/super.c:        sb->s_maxbytes = 
>> ext4_max_size(sb->s_blocksize_bits,
>> has_huge_files);
>> So, I can't use ext4 for this testcase. :(
>
> Sadly, after switching to xfs, with 2^64 file size limit, I got 
> a new
> error:
>
> [ 0:10.980] # 200 TiB raid1
> [ 0:10.980] lvcreate --type raid1 -m 1 -L 200T -n $lv1 $vg1 
> --nosync
> [ 0:10.980] #lvcreate-large-raid.sh:51+ lvcreate --type raid1 -m 
> 1 -L 200T -n
> LV1 LVMTEST1868vg1 --nosync
> [ 0:10.980] File descriptor 6 (/dev/pts/0) leaked on lvm 
> invocation. Parent PID
> 1868: bash
> [ 0:11.226]   WARNING: New raid1 won't be synchronized. Don't 
> read what you
> didn't write!
> [ 0:11.397]   Failed to deactivate LVMTEST1868vg1/LV1_rmeta_0.
> [ 0:11.776]   Internal error: Removing still active LV
> LVMTEST1868vg1/LV1_rmeta_0.
> [ 0:11.966] /root/lvm2/test/shell/lvcreate-large-raid.sh: line 
> 51:  2071 Aborted
> (core dumped) lvcreate --type raid1 -m 1 -L 200T -n $lv1 $vg1 
> --nosync
> [ 0:14.059] set +vx; STACKTRACE; set -vx
> [ 0:14.061] ##lvcreate-large-raid.sh:51+ set +vx
> [ 0:14.061] ## - /root/lvm2/test/shell/lvcreate-large-raid.sh:51
> [ 0:14.065] ## 1 STACKTRACE() called from
> /root/lvm2/test/shell/lvcreate-large-raid.sh:51
>
> Looks like lvcreate crashed.
>
Can't reproduce it on v6.15-rc7 and lvm2 HEAD 
37b28216fd029ffe2fac815b16645aeb9d352235:

/dev/vdc on /mnt type xfs 
(rw,relatime,attr2,inode64,logbufs=8,logbsize=32k,noquota)
make check_local T=shell/lvcreate-large-raid.sh 
LVM_TEST_AUX_TRACE=1  VERBOSE=1 LVM_TEST_DIR=/mnt

What's your kernel and lvm versions?

--
Su
> Thanks,
> Kuai