linux-kernel - Re: [PATCH v4 0/3] initramfs: add support for xattrs in the initial ram disk

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Message-ID: <d6af7f7e-7f8c-a6a7-7a09-84928fd69774@mentor.com>
Date:   Fri, 29 Jul 2022 11:37:49 +0100
From:   Jim Baxter <jim_baxter@...tor.com>
To:     Roberto Sassu <roberto.sassu@...wei.com>,
        Eugeniu Rosca <erosca@...adit-jv.com>
CC:     Rob Landley <rob@...dley.net>, "hpa@...or.com" <hpa@...or.com>,
        Masahiro Yamada <masahiroy@...nel.org>,
        Arvind Sankar <nivedita@...m.mit.edu>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        "viro@...iv.linux.org.uk" <viro@...iv.linux.org.uk>,
        "linux-security-module@...r.kernel.org" 
        <linux-security-module@...r.kernel.org>,
        "linux-integrity@...r.kernel.org" <linux-integrity@...r.kernel.org>,
        "initramfs@...r.kernel.org" <initramfs@...r.kernel.org>,
        "linux-api@...r.kernel.org" <linux-api@...r.kernel.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "bug-cpio@....org" <bug-cpio@....org>,
        "zohar@...ux.vnet.ibm.com" <zohar@...ux.vnet.ibm.com>,
        Silviu Vlasceanu <Silviu.Vlasceanu@...wei.com>,
        Dmitry Kasatkin <dmitry.kasatkin@...wei.com>,
        "takondra@...co.com" <takondra@...co.com>,
        "kamensky@...co.com" <kamensky@...co.com>,
        "arnd@...db.de" <arnd@...db.de>,
        "james.w.mcmechan@...il.com" <james.w.mcmechan@...il.com>,
        "linux-kbuild@...r.kernel.org" <linux-kbuild@...r.kernel.org>,
        Dirk Behme <dirk.behme@...bosch.com>,
        Eugeniu Rosca <roscaeugeniu@...il.com>
Subject: Re: [PATCH v4 0/3] initramfs: add support for xattrs in the initial
 ram disk


On 19/07/2022 07:55, Roberto Sassu wrote:
>> From: Jim Baxter [mailto:jim_baxter@...tor.com]
>> Sent: Monday, July 18, 2022 8:08 PM
>>
>>
>>
>> Best regards,
>>
>> *Jim Baxter*
>>
>> Siemens Digital Industries Software
>> Automotive Business Unit
>> DI SW STS ABU
>> UK
>> Tel.: +44 (161) 926-1656
>> mailto:jim.baxter@...mens.com <mailto:jim.baxter@...mens.com>
>> sw.siemens.com <https://sw.siemens.com/>
>>
>> On 18/07/2022 17:49, Roberto Sassu wrote:
>>>> From: Jim Baxter [mailto:jim_baxter@...tor.com]
>>>> Sent: Monday, July 18, 2022 6:36 PM
>>>>
>>>>
>>>> Hello,
>>>>
>>>> I have been testing these patches and do not see the xattr information when
>>>> trying to retrieve it within the initramfs, do you have an example of how
>>>> you tested this originally?
>>>
>>> Hi Jim, all
>>>
>>> apologies, I didn't find yet the time to look at this.
>>
>> Hello Roberto,
>>
>> Thank you for your response, I can wait until you have looked at the patches,
>> I asked the question to make sure it was not something wrong in my
>> configuration.
>>
>>>
>>> Uhm, I guess this could be solved with:
>>>
>>> https://github.com/openeuler-
>> mirror/kernel/commit/18a502f7e3b1de7b9ba0c70896ce08ee13d052da
>>>
>>> and adding initramtmpfs to the kernel command line. You are
>>> probably using ramfs, which does not have xattr support.
>>>

Can I clarify which filesystem type is supported with this patch series?
Is it tmpfs or perhaps a ramdisk?


>>
>>
>> Thank you, I have tested that patch but the problem remained. Here is my
>> command line, I wonder if there is something wrong.
>>
>> Kernel command line: rw rootfstype=initramtmpfs root=/dev/ram0
>> initrd=0x500000000 rootwait
> 
> It is just initramtmpfs, without rootfstype=.
> 
> Roberto

Best regards,
Jim