[linux-lvm] It looks wrong for the timeout when lvm test running

[Heming Zhao]

Hello Zdenek,

Please check the compressed file in attachment.

my env:  suse tumbleweed, running in qemu virtual machine (4 vcpu 5g mem).
uname -a:
Linux tb-base40g 5.3.8-1-default #1 SMP Wed Oct 30 07:12:05 UTC 2019 (ea4c828) x86_64 x86_64 x86_64 GNU/Linu

lvm2 version:
# ./tools/lvm version
   LVM version:     2.03.08(2)-git (2019-11-30)
   Library version: 1.02.169-git (2019-11-30)
   Driver version:  4.40.0
   Configuration:   ./configure --host=x86_64-suse-linux-gnu --build=x86_64-suse-linux-gnu --program-prefix= --disable-dependency-tracking --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --sysconfdir=/etc --datadir=/usr/share --includedir=/usr/include --libdir=/usr/lib64 --libexecdir=/usr/lib --localstatedir=/var --sharedstatedir=/var/lib --mandir=/usr/share/man --infodir=/usr/share/info --disable-dependency-tracking --enable-dmeventd --enable-cmdlib --enable-udev_rules --enable-udev_sync --with-udev-prefix=/usr/ --enable-selinux --enable-pkgconfig --with-usrlibdir=/usr/lib64 --with-usrsbindir=/usr/sbin --with-default-dm-run-dir=/run --with-tmpfilesdir=/usr/lib/tmpfiles.d --with-thin=internal --with-device-gid=6 --with-device-mode=0640 --with-device-uid=0 --with-dmeventd-path=/usr/sbin/dmeventd --with-thin-check=/usr/sbin/thin_check --with-thin-dump=/usr/sbin/thin_dump --with-thin-repair=/usr/sbin/thin_repair --enable-blkid_wiping --enable-lvmpolld --enable-realtime --with-cache=internal --with-default-locking-dir=/run/lock/lvm --with-default-pid-dir=/run --with-default-run-dir=/run/lvm --enable-cmirrord --enable-fsadm --disable-silent-rules --enable-write_install --with-vdo=internal --with-vdo-format=/usr/bin/vdoformat --enable-debug --enable-dbus-service --with-writecache=internal


On 12/9/19 5:40 PM, Zdenek Kabelac wrote:
> Dne 09. 12. 19 v 10:20 Heming Zhao napsal(a):
>> Hello List,
>>
>> The lvm test default timeout (--timeout) default value is 180.
>> But I met below condition when running testcase (in virtual machine):
>> ```
>> make check_local T=shell/snapshot-merge.sh
>>      ... ...
>> ###       passed: [ndev-vanilla] shell/snapshot-merge.sh 665
>>      ... ...
>> ```
>>
>> Obviously, the timeout doesn't work normally.
>> If I change below code, the timeout work as expected. (in lib/brick-shelltest.h)
>> ```
>>           if ( select( nfds, &set, NULL, NULL, &wait ) > 0 ) {
>>               silent_start = end; /* something happened */
>>               io.sync( false );
>>           }
> 
> 
> Hi
> 
> 
> Can you please provide (compressed) output of:
> 
> 'make check_local T=snapshot-merge.sh VERBOSE=1 LVM_TEST_AUX_TRACE=1'
> 
> Thanks
> 
> Zdenek
> 
> 
> 
> 
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