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

[chrubis@suse.cz]

Hi!
> >
> > What was the error message, same as previous?
> >
> 
> Here we go.
> 
> ...
> mount: wrong fs type, bad option, bad superblock on /dev/loop1,
>        missing codepage or helper program, or other error
>        In some cases useful info is found in syslog - try
>        dmesg | tail  or so
> 
> FATAL: can't mount block device /dev/loop1.
> mke2fs 1.42 (29-Nov-2011)
> mkfs.ext4: Device size reported to be zero.  Invalid partition specified, or
>         partition table wasn't reread after running fdisk, due to
>         a modified partition being busy and in use.  You may need to reboot
>         to re-read your partition table.
> 
> 102400+0 records in
> 102400+0 records out
> 102400000 bytes (102 MB) copied, 0.542412 s, 189 MB/s
> ...
> 
> # dmesg | tail
> ...
> [ 1179.820940] EXT4-fs (loop1): VFS: Can't find ext4 filesystem

Hmm, it seems like something went wrong with the loop device setup (as
if no device was attached but the error was silently ignored).

(And I wonder why the messages seems to be in reverse order, the
messages from dd should have been first, then mkfs and then mount).

Could you try again without the &> /dev/null redirection and report
if there is error in the losetup step?

Also what is output of the 'losetup -a' added right before the mkfs
command?

diff --git a/runltp b/runltp
index a8bf404..1e9e637 100755
--- a/runltp
+++ b/runltp
@@ -996,12 +996,13 @@ create_block()
             return 1
         else
             ##attach the created file to loop dev.
-            losetup $LOOP_DEV ${TMP}/test.img &>/dev/null
+            losetup $LOOP_DEV ${TMP}/test.img
             if [ $? -ne 0 ]; then
                 echo "losetup failed to create block device"
                 return 1
             else
-                mkfs.ext4 $LOOP_DEV &>/dev/null
+                losetup -a
+		mkfs.ext4 $LOOP_DEV &>/dev/null
                 [ $? -ne 0 ] && (echo "creating a ext4 block device failed" && return 1)
                 #set the values in alltests which require block device.
                 DEVICE=$LOOP_DEV
-- 
Cyril Hrubis
chrubis@suse.cz

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