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From: Qu Wenruo <quwenruo.btrfs@gmx.com>
To: dsterba@suse.cz, Qu Wenruo <wqu@suse.com>, linux-btrfs@vger.kernel.org
Subject: Re: [PATCH 0/3] btrfs-progs: convert: better ENOSPC handling
Date: Sat, 1 Aug 2020 07:37:13 +0800
Message-ID: <15958814-4956-12bd-3297-0ce3bc495a87@gmx.com> (raw)
In-Reply-To: <20200731161634.GP3703@twin.jikos.cz>

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On 2020/8/1 上午12:16, David Sterba wrote:
> On Wed, Jul 29, 2020 at 04:40:35PM +0800, Qu Wenruo wrote:
>> This patchset is to address a bug report [1], where even with the bit
>> overflow bug fixed, the user is still unable to convert an ext4 fs to
>> btrfs.
>>
>> The error is -ENOSPC, which triggers BUG_ON() and brings the end to the
>> convertion.
>>
>> We're still waiting for the image dump to determine what's the real
>> cause is, but considering the user is still reporting around 40% free
>> space, I guess it's something wrong with the extent allocator.
>>
>> But still, we can enhance btrfs-convert to make it handle errors more
>> gracefully, with better error message, and even some debugging info like
>> the available space / total space ratio.
>>
>> Qu Wenruo (3):
>>   btrfs-progs: convert: handle errors better in ext2_copy_inodes()
>>   btrfs-progs: convert: update error message to reflect original fs
>>     unmodified cases
>>   btrfs-progs: convert: report available space before convertion happens
> 
> Added to devel, thanks. With the fixup and I've updated the space report
> to look like this:
> 
> create btrfs filesystem:
>         blocksize: 4096
>         nodesize:  16384
>         features:  extref, skinny-metadata (default)
>         checksum:  crc32c
> free space report:
>         total:     2147483648
>         free:      1610547200 (75.00%)
> 
Wow, that looks even better!

Thanks for the hot fix and enhanced UI!
Qu


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      reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-29  8:40 Qu Wenruo
2020-07-29  8:40 ` [PATCH 1/3] btrfs-progs: convert: handle errors better in ext2_copy_inodes() Qu Wenruo
2020-07-29  8:40 ` [PATCH 2/3] btrfs-progs: convert: update error message to reflect original fs unmodified cases Qu Wenruo
2020-07-29  8:40 ` [PATCH 3/3] btrfs-progs: convert: report available space before convertion happens Qu Wenruo
2020-07-29  9:05   ` Su Yue
2020-07-29  9:13     ` Qu Wenruo
2020-07-31 15:35       ` David Sterba
2020-07-31 16:16 ` [PATCH 0/3] btrfs-progs: convert: better ENOSPC handling David Sterba
2020-07-31 23:37   ` Qu Wenruo [this message]

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