[linux-lvm] [PATCH] tests: use correct RA size, underly dev & delay time.

[heming.zhao at suse.com]

a little more info about my patch.
in one of my test env, system default read_ahead size is 1024 sector (512K), 
which bigger than 128k in test case. which causes _set_dev_node_read_ahead() to deny
to set up RA.

On 8/12/20 7:18 PM, Zhao Heming wrote:
> lvconvert-repair-raid.sh:
> - in some env, the delay=0 is too short to set up env.
> 
> lvcreate-usage.sh:
> - use correct underlying dev for brd & loop devices.
> - read ahead size should equal or bigger than current system value
> 
> read-ahead.sh:
> - use current system ra_size PLUS 128 to set up new ra_size.
>    for detail, refer _set_dev_node_read_ahead in libdm-common.c
> 
> Signed-off-by: Zhao Heming <heming.zhao at suse.com>
> ---
>   test/shell/lvconvert-repair-raid.sh |  2 +-
>   test/shell/lvcreate-usage.sh        | 11 ++++++-----
>   test/shell/read-ahead.sh            |  6 ++++--
>   3 files changed, 11 insertions(+), 8 deletions(-)
>