Re: [BUG] btrfs hangup when we run the "sync" command

[Miao Xie <miaox@cn.fujitsu.com>]

On Thu Jul 15 2010 16:14:31 GMT+0800 (CST), Yan, Zheng wrote:
> 2010/7/15 Miao Xie<miaox@cn.fujitsu.com>:
>> Hi, everyone
>>
>> I found btrfs will hangup when we run the sync command on my
>> x86_64 box.
>>
>> The reproduce steps is following:
>> # mkfs.btrfs -s 8192 -l 8192 -n 8192 /dev/sda1
>> # mount /dev/sda1 /mnt
>> # echo 1234567>  /mnt/aaa
>> # sync
>> (btrfs hangs up)
>>
>> It seems that the btrfs doesn't support the sectorsize which is
>> greater than the page size just like ext2/3/4, though we can use
>> mkfs.btrfs to make a filesystem with a big sectorsize. Am I right?
>>
>> If yes, we must do more check in the mkfs.btrfs.
>>
>
> yes, btrfs doesn't support the sectorsize>  PAGE_size.
>

So we must do more check in the mkfs.btrfs to avoid misuse, and I'll
add some check of the sectorsize into the mkfs.btrfs.

BTW, I sent some patches to the btrfs community recently, but I haven't received
any reply. Could you review them for me? though I have tested them and everything
works well.

[PATCH 1/2] btrfs: restructure try_release_extent_buffer()
[PATCH 2/2] btrfs: fix oops when leafsize is greator than nodesize
[PATCH] btrfs-progs: fix wrong extent buffer size when reading tree block

Thanks
Miao Xie