Re: ANNOUNCE: mdadm 4.0 - A tool for managing md Soft RAID under Linux

From: Guoqing Jiang
Date: Wed Jan 11 2017 - 23:25:54 EST




On 01/12/2017 12:59 AM, Jes Sorensen wrote:
On 01/11/17 11:52, Shaohua Li wrote:
On Tue, Jan 10, 2017 at 11:49:04AM -0600, Bruce Dubbs wrote:
Jes Sorensen wrote:
I am pleased to announce the availability of
mdadm version 4.0

It is available at the usual places:
http://www.kernel.org/pub/linux/utils/raid/mdadm/
and via git at
git://git.kernel.org/pub/scm/utils/mdadm/mdadm.git
http://git.kernel.org/cgit/utils/mdadm/

The update in major version number primarily indicates this is a
release by it's new maintainer. In addition it contains a large number
of fixes in particular for IMSM RAID and clustered RAID support. In
addition this release includes support for IMSM 4k sector drives,
failfast and better documentation for journaled RAID.
Thank you for the new release. Unfortunately I get 9 failures running the
test suite:

tests/00raid1... FAILED
tests/07autoassemble... FAILED
tests/07changelevels... FAILED
tests/07revert-grow... FAILED
tests/07revert-inplace... FAILED
tests/07testreshape5... FAILED
tests/10ddf-fail-twice... FAILED
tests/20raid5journal... FAILED
tests/10ddf-incremental-wrong-order... FAILED
Yep, several tests usually fail. It appears some checks aren't always good. At
least the 'check' function for reshape/resync isn't reliable in my test, I saw
07changelevelintr fails frequently.
That is my experience as well - some of them are affected by the kernel
version too. We probably need to look into making them more reliable.

If possible, it could be a potential topic for lsf/mm raid discussion as Coly suggested
in previous mail.

Is current test can run the test for different raid level, say, "./test --raidtype=raid1" could
execute all the *r1* tests, does it make sense to do it if we don't support it now.

Thanks,
Guoqing