linux-ext4 - Re: [PATCH 2/2] e2fsck: add sync error handle to e2fsck.

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Date:   Thu, 30 Mar 2023 11:00:33 +0800
From:   zhanchengbin <zhanchengbin1@...wei.com>
To:     "Darrick J. Wong" <djwong@...nel.org>
CC:     <tytso@....edu>, <linux-ext4@...r.kernel.org>,
        <linfeilong@...wei.com>, <louhongxiang@...wei.com>,
        <liuzhiqiang26@...wei.com>
Subject: Re: [PATCH 2/2] e2fsck: add sync error handle to e2fsck.

Thank you for your advice. I will modify patches.
  - bin.

On 2023/3/26 1:13, Darrick J. Wong wrote:
> On Sat, Mar 25, 2023 at 02:56:52PM +0800, zhanchengbin wrote:
>> If fsync fails during fsck, it is silent and users will not perceive it, so
>> a function to handle fsync failure should be added to fsck.
>>
>> Signed-off-by: zhanchengbin <zhanchengbin1@...wei.com>
>> ---
>>   e2fsck/ehandler.c | 24 ++++++++++++++++++++++++
>>   1 file changed, 24 insertions(+)
>>
>> diff --git a/e2fsck/ehandler.c b/e2fsck/ehandler.c
>> index 71ca301c..ae35f3ef 100644
>> --- a/e2fsck/ehandler.c
>> +++ b/e2fsck/ehandler.c
>> @@ -118,6 +118,29 @@ static errcode_t e2fsck_handle_write_error(io_channel channel,
>>   	return error;
>>   }
>>   
>> +static errcode_t e2fsck_handle_sync_error(io_channel channel,
>> +                                            errcode_t error)
>> +{
>> +	ext2_filsys fs = (ext2_filsys) channel->app_data;
>> +	e2fsck_t ctx;
>> +
>> +	ctx = (e2fsck_t) fs->priv_data;
>> +	if (ctx->flags & E2F_FLAG_EXITING)
>> +		return 0;
>> +	
> 
> Nit: ^^^ unnecessary indentation
> 
>> +	if (operation)
>> +		printf(_("Error sync (%s) while %s.  "),
> 
> I think we should be more explicit that *fsync* failed:
> 
> "Error during fsync of dirty metadata while %s: %s",
> 	operation, error_message(...)?
> 
> 
>> +		       error_message(error), operation);
>> +	else
>> +		printf(_("Error sync (%s).  "),
>> +		       error_message(error));
>> +	preenhalt(ctx);
>> +	if (ask(ctx, _("Ignore error"), 1))
> 
> ask_yn()?
> 
> Not sure what we're asking about here, or what happens if you answer NO?
> Unless we're using a redo file, dirty metadata flush has failed so we
> might as well keep going, right?
> 
> --D
> 
>> +		return 0;
>> +
>> +	return error;
>> +}
>> +
>>   const char *ehandler_operation(const char *op)
>>   {
>>   	const char *ret = operation;
>> @@ -130,4 +153,5 @@ void ehandler_init(io_channel channel)
>>   {
>>   	channel->read_error = e2fsck_handle_read_error;
>>   	channel->write_error = e2fsck_handle_write_error;
>> +	channel->sync_error = e2fsck_handle_sync_error;
>>   }
>> -- 
>> 2.31.1
>>
> .
>