Re: [LTP] How to run only a specific test series like for example IPC?

[chrubis@suse.cz]

Hi!
> > There are certain testcases that needs a separate filesystem partition
> > to play with, if you don't pass physical disk partition to the runtest
> > script a loopback device is created, formatted and mounted.
> >
> >> 10240+0 records in
> >> 10240+0 records out
> >> 10240000 bytes (10 MB) copied, 0.260004 s, 39.4 MB/s
> >> ^C
> >>
> >> root# dmesg | tail
> >>
> >> [   78.095907] EXT4-fs (loop1): VFS: Can't find ext4 filesystem <--- ???
> >
> > This simply looks like the 10MB image is not enough for the ext4 journal
> > for some reason.
> >
> > Try following patch that increases the size to 100MB.
> >
> > diff --git a/runltp b/runltp
> > index a8bf404..7955f44 100755
> > --- a/runltp
> > +++ b/runltp
> > @@ -984,7 +984,7 @@ main()
> >  create_block()
> >  {
> >      #create a block device with ext4 filesystem.
> > -    dd if=/dev/zero of=${TMP}/test.img bs=1kB count=10240 &>/dev/null
> > +    dd if=/dev/zero of=${TMP}/test.img bs=1kB count=102400 &>/dev/null
> >      if [ $? -ne 0 ]; then
> >          echo "Failed to create loopback device image, please check disk space and re-run"
> >          return 1
> > --
> 
> Hmm, that did not help.

What was the error message, same as previous?

> How much disc-space someone need on the partition where LTP resides
> (where the tests are performed)?

Not much, I do not know the precise number but about gigabyte should be
enough (and far less when you omit aio and fs stress tests).

> $ LANG=C LC_ALL=C df -T
> Filesystem     Type     1K-blocks      Used Available Use% Mounted on
> rootfs         rootfs    17753424  12825524   4003024  77% /
> udev           devtmpfs   1960968         4   1960964   1% /dev
> tmpfs          tmpfs       788020       888    787132   1% /run
> /dev/sda2      fuseblk  465546236 107358584 358187652  24% /host
> /dev/loop0     ext4      17753424  12825524   4003024  77% /
> none           tmpfs         5120         0      5120   0% /run/lock
> none           tmpfs      1970048       156   1969892   1% /run/shm
> 
> Can I use a different partition where I have more disc-space available?

LTP uses TMPDIR env variable for that (and defaults to /tmp/ when TMPDIR
is not set).

-- 
Cyril Hrubis
chrubis@suse.cz

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