[LTP] [PATCH] zram01: Specify filesystem type explicitly in mount

[Petr Vorel]

Hi Avinesh,

> util-linux 2.42 converts "ntfs" to "ntfs3" during auto-detection,
> causing mount failures on systems with CONFIG_NTFS3_FS disabled
> even when ntfs-3g is available.

I see from release notes [1]:

	The NTFS mount type (kernel FS driver) can be changed by the compile option
	--with-ntfs-mounttype=, the default is ntfs3.

As you already found I guess it started as PR#3618 [2] but later got
fixed/changed as PR#3872 [3] (previous attempt was PR#3807 [4]).

[1] https://github.com/util-linux/util-linux/blob/master/Documentation/releases/v2.42-ReleaseNotes
[2] https://github.com/util-linux/util-linux/pull/3618
[3] https://github.com/util-linux/util-linux/pull/3872
[4] https://github.com/util-linux/util-linux/pull/3807

> tst_supported_fs_types.c:141: TINFO: FUSE does support ntfs
> tst_supported_fs_types.c:67: TINFO: mkfs.ntfs does exist
> tst_supported_fs_types.c:137: TINFO: Filesystem ntfs3 is not supported
> ...
> ...
> zram01 6 TINFO: mount /dev/zram7
> mount: /tmp/LTP_zram01.YG3YHQhMER/zram7: unknown filesystem type 'ntfs3'.
>        dmesg(1) may have more information after failed mount system call.
> zram01 6 TBROK: mount /dev/zram7 zram7 failed

> Fix by specifying -t option with the filesystem type that LTP
> verified as supported, avoiding auto-detection.

I guess there is nothing to be fixed in our lib/tst_supported_fs_types.c
(or even testcases/lib/tst_supported_fs.c which uses it) and there is no other
test using TST_ALL_FILESYSTEMS=1 which would need it.

Thanks for fixing this!
Reviewed-by: Petr Vorel <pvorel@suse.cz>

Kind regards,
Petr

> Signed-off-by: Avinesh Kumar <avinesh.kumar@suse.com>
> ---
>  testcases/kernel/device-drivers/zram/zram01.sh | 10 ++++++----
>  1 file changed, 6 insertions(+), 4 deletions(-)

> diff --git a/testcases/kernel/device-drivers/zram/zram01.sh b/testcases/kernel/device-drivers/zram/zram01.sh
> index 793f6603c..4b7f2a753 100755
> --- a/testcases/kernel/device-drivers/zram/zram01.sh
> +++ b/testcases/kernel/device-drivers/zram/zram01.sh
> @@ -94,13 +94,15 @@ zram_makefs()

>  zram_mount()
>  {
> -	local i
> +	local i=$dev_start
> +	local fs

> -	for i in $(seq $dev_start $dev_end); do
> -		tst_res TINFO "mount /dev/zram$i"
> +	for fs in $zram_filesystems; do
> +		tst_res TINFO "mount /dev/zram$i ($fs)"
>  		mkdir zram$i
> -		ROD mount /dev/zram$i zram$i
> +		ROD mount -t "$fs" /dev/zram$i zram$i
>  		dev_mounted=$i
> +		i=$((i + 1))
>  	done

>  	tst_res TPASS "mount of zram device(s) succeeded"