[LTP] [PATCH] zram: extend the zram3 disksize to 40MB

[LTP] [PATCH] zram: extend the zram3 disksize to 40MB

[Li Wang]

It failed to format btrfs on /dev/zram3 device since the
disk size is too small (btrfs-progs is v4.4.1).

The error msg we catched:

zram01 3 TINFO : make ext3 filesystem on /dev/zram0
zram01 3 TINFO : make ext4 filesystem on /dev/zram1
zram01 3 TINFO : make xfs filesystem on /dev/zram2
zram01 3 TINFO : make btrfs filesystem on /dev/zram3
'/dev/zram3' is too small to make a usable filesystem
Minimum size for each btrfs device is 41943040.
btrfs-progs v4.4.1
See http://btrfs.wiki.kernel.org for more information.
zram01 3 TFAIL : failed to make btrfs on /dev/zram3
zram01 4 TINFO : zram cleanup

Signed-off-by: Li Wang <liwang@redhat.com>
---
 testcases/kernel/device-drivers/zram/zram01.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/testcases/kernel/device-drivers/zram/zram01.sh b/testcases/kernel/device-drivers/zram/zram01.sh
index 26dae90..caa0e05 100755
--- a/testcases/kernel/device-drivers/zram/zram01.sh
+++ b/testcases/kernel/device-drivers/zram/zram01.sh
@@ -39,8 +39,8 @@ zram_max_streams="2 3 5 8"
 # not support mem suffixes, in some newer kernels, they use
 # memparse() which supports mem suffixes. So here we just use
 # bytes to make sure everything works correctly.
-zram_sizes="26214400 26214400 26214400 26214400" # 25MB
-zram_mem_limits="25M 25M 25M 25M"
+zram_sizes="26214400 26214400 26214400 41943040" # 25MB, 40MB for btrfs
+zram_mem_limits="25M 25M 25M 40M"
 zram_filesystems="ext3 ext4 xfs btrfs"
 zram_algs="lzo lzo lzo lzo"
 
-- 
1.8.3.1

[LTP] [PATCH] zram: extend the zram3 disksize to 40MB

[Cyril Hrubis]

Hi!
> It failed to format btrfs on /dev/zram3 device since the
> disk size is too small (btrfs-progs is v4.4.1).
> 
> The error msg we catched:
> 
> zram01 3 TINFO : make ext3 filesystem on /dev/zram0
> zram01 3 TINFO : make ext4 filesystem on /dev/zram1
> zram01 3 TINFO : make xfs filesystem on /dev/zram2
> zram01 3 TINFO : make btrfs filesystem on /dev/zram3
> '/dev/zram3' is too small to make a usable filesystem
> Minimum size for each btrfs device is 41943040.
> btrfs-progs v4.4.1
> See http://btrfs.wiki.kernel.org for more information.
> zram01 3 TFAIL : failed to make btrfs on /dev/zram3
> zram01 4 TINFO : zram cleanup

I've got the exact same failure with btrfs-progs 4.5.1 just recently,
the fix looks good to me.

And btw it looks like we need to increase the default loop device size
again since btrfs-progs 4.5.1 seems to request at least 136MB for mkfs01
test...

-- 
Cyril Hrubis
chrubis@suse.cz

[LTP] [PATCH] zram: extend the zram3 disksize to 40MB

[Alexey Kodanev]

Hi,
On 07/13/2016 11:59 AM, Cyril Hrubis wrote:
> Hi!
>> It failed to format btrfs on /dev/zram3 device since the
>> disk size is too small (btrfs-progs is v4.4.1).
>>
>> The error msg we catched:
>>
>> zram01 3 TINFO : make ext3 filesystem on /dev/zram0
>> zram01 3 TINFO : make ext4 filesystem on /dev/zram1
>> zram01 3 TINFO : make xfs filesystem on /dev/zram2
>> zram01 3 TINFO : make btrfs filesystem on /dev/zram3
>> '/dev/zram3' is too small to make a usable filesystem
>> Minimum size for each btrfs device is 41943040.
>> btrfs-progs v4.4.1
>> See http://btrfs.wiki.kernel.org for more information.
>> zram01 3 TFAIL : failed to make btrfs on /dev/zram3
>> zram01 4 TINFO : zram cleanup
> I've got the exact same failure with btrfs-progs 4.5.1 just recently,
> the fix looks good to me.

Looks good to me too. Patch applied.

Best regards,
Alexey

> And btw it looks like we need to increase the default loop device size
> again since btrfs-progs 4.5.1 seems to request at least 136MB for mkfs01
> test...
>

[LTP] [PATCH] zram: extend the zram3 disksize to 40MB

[Alexey Kodanev]

On 07/25/2016 02:15 PM, Alexey Kodanev wrote:
> Hi,
> On 07/13/2016 11:59 AM, Cyril Hrubis wrote:
>> Hi!
>>> It failed to format btrfs on /dev/zram3 device since the
>>> disk size is too small (btrfs-progs is v4.4.1).
>>>
>>> The error msg we catched:
>>>
>>> zram01 3 TINFO : make ext3 filesystem on /dev/zram0
>>> zram01 3 TINFO : make ext4 filesystem on /dev/zram1
>>> zram01 3 TINFO : make xfs filesystem on /dev/zram2
>>> zram01 3 TINFO : make btrfs filesystem on /dev/zram3
>>> '/dev/zram3' is too small to make a usable filesystem
>>> Minimum size for each btrfs device is 41943040.
>>> btrfs-progs v4.4.1
>>> See http://btrfs.wiki.kernel.org for more information.
>>> zram01 3 TFAIL : failed to make btrfs on /dev/zram3
>>> zram01 4 TINFO : zram cleanup
>> I've got the exact same failure with btrfs-progs 4.5.1 just recently,
>> the fix looks good to me.
>
> Looks good to me too. Patch applied.

Also noted that in case btrfs is not supported, ext2 will be used with 40MB.
I think it shouldn't be a problem, just one more change that patch made.

>
> Best regards,
> Alexey
>
>> And btw it looks like we need to increase the default loop device size
>> again since btrfs-progs 4.5.1 seems to request at least 136MB for mkfs01
>> test...
>>
>
>