GNU bug report logs - #43362
Linux kernel 5.8.8 and newer

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Bureau <skyrostyan <at> orange.fr>
To: bug-parted <at> gnu.org
Subject: Linux kernel 5.8.8 and newer
Date: Sat, 12 Sep 2020 17:35:00 +0200

Hello,

Since kernel 5.8.8, parted gives the following error message each time 
parted attempts to modify something on the disk.

libparted 3.3
Partition(s) 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 
21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 
39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 
57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 
75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 
93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 
109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 
123, 124, 125, 126, 127, 128 on /dev/sda have been written, but we have 
been unable to inform the kernel of the change, probably because it/they 
are in use.  As a result, the old partition(s) will remain in use.  You 
should reboot now before making further changes.

In the example above, my disk contains 4 real partitions.
This bug appears on all the computers I have tried here.
Is this a new kernel feature or a parted bug?

Best regards.

Alain

Message #8 received at 43362 <at> debbugs.gnu.org (full text, mbox):

From: Bureau <skyrostyan <at> orange.fr>
To: 43362 <at> debbugs.gnu.org
Subject: SOLVED
Date: Sun, 13 Sep 2020 17:51:50 +0200

Hello,

After digging in the kernel, it is a new kernel feature.

In kernel source files :

block/partitions/core.c

have been changed.

To get parted-3.3 working again, in the source code of parted-3.3, 
modify the file:

libparted/arch/linux.c

in the function :

static int _disk_sync_part_table()

line 3203, replace :

if (ok [i - 1] || errnums [i - 1] == ENXIO
by
if (ok [i - 1] || errnums [i - 1] == ENOMEM

Accordingly to the changes made in block/partitions/core.c
That is making parted working again.

Alain

Message #11 received at submit <at> debbugs.gnu.org (full text, mbox):

From: "Brian C. Lane" <bcl <at> redhat.com>
To: bug-parted <at> gnu.org
Subject: Re: bug#43362: SOLVED
Date: Mon, 14 Sep 2020 09:25:05 -0700

On Sun, Sep 13, 2020 at 05:51:50PM +0200, Bureau wrote:
> 
> Hello,
> 
> After digging in the kernel, it is a new kernel feature.
> 
> In kernel source files :
> 
> block/partitions/core.c
> 
> have been changed.
> 
> To get parted-3.3 working again, in the source code of parted-3.3, 
> modify the file:
> 
> libparted/arch/linux.c
> 
> in the function :
> 
> static int _disk_sync_part_table()
> 
> line 3203, replace :
> 
> if (ok [i - 1] || errnums [i - 1] == ENXIO
> by
> if (ok [i - 1] || errnums [i - 1] == ENOMEM
> 
> Accordingly to the changes made in block/partitions/core.c
> That is making parted working again.

Thanks for tracking that down.

-- 
Brian C. Lane (PST8PDT) - weldr.io - lorax - parted - pykickstart

Message #14 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Curtis Gedak <gedakc <at> gmail.com>
To: bug-parted <at> gnu.org
Subject: Re: bug#43362: SOLVED
Date: Mon, 14 Sep 2020 10:29:34 -0600

The regression in the kernel was reversed.

See
https://gitlab.gnome.org/GNOME/gparted/-/issues/111

Regards,
Curtis

On 2020-09-14 10:25 a.m., Brian C. Lane wrote:
> On Sun, Sep 13, 2020 at 05:51:50PM +0200, Bureau wrote:
>>
>> Hello,
>>
>> After digging in the kernel, it is a new kernel feature.
>>
>> In kernel source files :
>>
>> block/partitions/core.c
>>
>> have been changed.
>>
>> To get parted-3.3 working again, in the source code of parted-3.3, 
>> modify the file:
>>
>> libparted/arch/linux.c
>>
>> in the function :
>>
>> static int _disk_sync_part_table()
>>
>> line 3203, replace :
>>
>> if (ok [i - 1] || errnums [i - 1] == ENXIO
>> by
>> if (ok [i - 1] || errnums [i - 1] == ENOMEM
>>
>> Accordingly to the changes made in block/partitions/core.c
>> That is making parted working again.
> 
> Thanks for tracking that down.
> 

Message #19 received at 43362-close <at> debbugs.gnu.org (full text, mbox):

From: "Brian C. Lane" <bcl <at> redhat.com>
To: Bureau <skyrostyan <at> orange.fr>
Cc: 43362-close <at> debbugs.gnu.org
Subject: Re: bug#43362: SOLVED
Date: Mon, 14 Sep 2020 10:59:06 -0700

On Sun, Sep 13, 2020 at 05:51:50PM +0200, Bureau wrote:
> 
> Hello,
> 
> After digging in the kernel, it is a new kernel feature.
> 
> In kernel source files :
> 
> block/partitions/core.c
> 
> have been changed.
> 
> To get parted-3.3 working again, in the source code of parted-3.3, 
> modify the file:
> 
> libparted/arch/linux.c
> 
> in the function :
> 
> static int _disk_sync_part_table()
> 
> line 3203, replace :
> 
> if (ok [i - 1] || errnums [i - 1] == ENXIO
> by
> if (ok [i - 1] || errnums [i - 1] == ENOMEM
> 
> Accordingly to the changes made in block/partitions/core.c
> That is making parted working again.

I dug into this and it's a kernel bug that will be fixed in 5.9 rc5 as
well as backported to 5.8.10 so changing it in parted isn't the right
solution.

Thanks,

Brian

-- 
Brian C. Lane (PST8PDT) - weldr.io - lorax - parted - pykickstart

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