linux-kernel - Re: [PATCH v21 00/10] NTFS read-write driver GPL implementation by Paragon Software

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Date:   Sun, 14 Feb 2021 00:00:26 +0500
From:   Hanabishi Recca <irecca.kun@...il.com>
To:     Oleksandr Natalenko <oleksandr@...alenko.name>
Cc:     Konstantin Komarov <almaz.alexandrovich@...agon-software.com>,
        linux-fsdevel@...r.kernel.org, viro@...iv.linux.org.uk,
        linux-kernel@...r.kernel.org, pali@...nel.org, dsterba@...e.cz,
        aaptel@...e.com, willy@...radead.org, rdunlap@...radead.org,
        joe@...ches.com, mark@...mstone.com, nborisov@...e.com,
        linux-ntfs-dev@...ts.sourceforge.net, anton@...era.com,
        dan.carpenter@...cle.com, hch@....de, ebiggers@...nel.org,
        andy.lavr@...il.com, kasep pisan <babam.yes@...il.com>
Subject: Re: [PATCH v21 00/10] NTFS read-write driver GPL implementation by
 Paragon Software

On Sat, Feb 13, 2021 at 2:27 AM Oleksandr Natalenko
<oleksandr@...alenko.name> wrote:

> Hanabishi, babam (both in Cc), here [2] you've reported some issues with
> accessing some files and with hidden attributes. You may reply to this
> email of mine with detailed description of your issues, and maybe
> developers will answer you.

There is strange files access issue since v18 update. Some random
files on partition became inaccessible, can't be read or even deleted.
For example:

# ls -la
ls: cannot access 'NlsStrings.js': No such file or directory
total 176
drwxrwxrwx 1 root root  4096 Oct 20 10:41 .
drwxrwxrwx 1 root root 12288 Oct 20 10:42 ..
-rwxrwxrwx 1 root root  8230 Oct 19 17:02 Layer.js < this file is ok
-????????? ? ?    ?        ?            ? NlsStrings.js < this file is
inaccessible
...

To reproduce the issue try to mount a NTFS partition with deep
structure and large files amout. Then run on it some recursive file
command, e.g. 'du -sh', it will list all access errors.
Can't say what exactly causes it. Filesystem itself is not damaged,
when mounting it via ntfs-3g, ntfs3 <18 or in Windows it works
normally. The files is not damaged and chkdsk report no errors.