linux-ext4 - Re: resize2fs hang at read function

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Date:   Thu, 8 Mar 2018 10:20:02 +0800
From:   rong zhao <zhaorbox@...il.com>
To:     Jan Kara <jack@...e.cz>
Cc:     "Theodore Y. Ts'o" <tytso@....edu>, linux-ext4@...r.kernel.org,
        linux-fsdevel@...r.kernel.org
Subject: Re: resize2fs hang at read function

Hi Lukas,

   Bug 1553004 filed for this, if anything needed, please let me know,
hope can learn from you how to find root cause.

Thanks.

2018-03-08 7:32 GMT+08:00 rong zhao <zhaorbox@...il.com>:
> OK, will do it.
>
> Maybe enterprise world looks forward to more steady, so very conservative.
>
> Rong
>
> 2018-03-07 16:49 GMT+08:00 Jan Kara <jack@...e.cz>:
>> On Wed 07-03-18 00:08:46, Theodore Y. Ts'o wrote:
>>> On Wed, Mar 07, 2018 at 11:01:40AM +0800, rong zhao wrote:
>>> >
>>> > I downloaded the latest e2fsprogs source code from kernel.org, it works.
>>>
>>> I'm not sure what the difference is, but I'm *shocked* that RHEL 7.4
>>> is still using e2fsprogs 1.42.x.  There are a very large number of
>>> resize2fs bugs, especially with very large file systems, with
>>> e2fsprogs 1.42.x.  Especially in the case of off-line resizes with a
>>> lage ext4 file system, with a resize2fs from e2fsprogs 1.42.x, data
>>> corruption is almost a certainty.
>>
>> Yeah, welcome to the world of enterprise distributions :-|. Even in SLES 12
>> SP3 (our current latest "enterprise offering") we have e2fsprogs 1.42.11 as
>> well. And the reason is that at the time we were looking what e2fsprogs to
>> put there (which was about two years back), 1.43 was still "WIP" and so I
>> had some doubts whether we can ship it in a distro supported for another 10
>> years. So we have 1.42.11 and only backport fixes based on customers' bug
>> reports.
>>
>> Luckily we are somewhat flexible at least on service pack releases so now
>> that e2fsprogs is having more regular releases (big thanks for that!), I
>> actually take your comment as a good reminder to talk to our PMs about
>> pushing 1.43.x to SLE12 SP4 :).
>>
>>                                                                 Honza
>> --
>> Jan Kara <jack@...e.com>
>> SUSE Labs, CR