Re: inode 7 frequently have problem when I run fsck

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Hi guys,

I had opt out from the ext4 list a few days ago and can't subscribe it
just now (no response from majordomo@xxxxxxxxxxxxxxx)
Anyway the problem is occurring again and I had put new info in
https://bugzilla.redhat.com/show_bug.cgi?id=1612449
Thanks,

Patrick

On Tue, Aug 7, 2018 at 4:42 AM, Eric Sandeen <esandeen@xxxxxxxxxx> wrote:
>
>
> On 7/30/18 10:25 AM, Theodore Y. Ts'o wrote:
>> On Mon, Jul 30, 2018 at 12:44:46PM +0800, Patrick Dung wrote:
>>> The problem usually appeared when I did not use the hard drive for a while.
>>> It happened a few times in the past.
>>>
>>> When I perform fsck today, it does not appear.
>>> I had checked the SATA hard drive with smartmontools. It passed the
>>> long test and I did not found any problem.
>>>
>>> After searching the web. I found Cisco WebEX Node SPA have very
>>> similar error message that I had encountered.
>>> https://www.cisco.com/c/en/us/td/docs/interfaces_modules/shared_port_adapters/install_upgrade/ASR1000/asr_sip_spa_hw/ASRtrbl.pdf
>>> Please check page 7-8 or search for "Inode 7" in the document.
>>
>> I've looked at the Cisco documentation, and what you've cited appears
>> to be an example of how to fix a corrupted file system.  It appears to
>> me to be merely an example, not an acknowledgement this kind of
>> corruption regularly happens on the Cisco WebEx device (if it were,
>> customers would probably refuse to buy it, since it means a system
>> administrator would be regularly needing to do this kind of manual
>> intervention on what is *supposed* to be an appliance sort of device.)
>>
>> In any case, I can't really tell you much more.  We do a lot of
>> extensive regression testing, and this is not a corruption I've seen
>> before.  A lot of people use ext4, and you are the first person who
>> has reported this particular problem.
>>
>> This is why I suspected that it might be a hardware problem.  It's
>> possible it is a kernel bug, and it could be anything, from an ext4
>> bug, to a device driver bug, to an LVM or MD or bcache bug if you are
>> using any of those components.  You didn't report the kernel version
>> to me, and you didn't tell me if this is a distro kernel.  If it is a
>> distro kernel, I'd suggest reporting it to the distribution, since
>> they might be able to tell you if anyone else with that distro kernel
>> has reported a problem similar to yours.
>
> FYI, Patrick reported it on the Fedora bugzilla with
>
> kernel: 4.17.3-200.fc28.x86_64
> e2fsprogs-1.44.2-0.fc28.x86_64
>
> Trolling around the RH bugzilla I do see other instances of a corrupt
> resize inodes, but it was always in combination with large swath of corruption
> surrounding it as well, i.e. in one case due to a faulty storage driver for an
> SDXC card....
>
> -Eric



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