on 12/31/2008 09:17 AM, Liu Hui wrote:
> mkfs.btrfs -m raid1 just means 'meta data' works as raid1
>
> You should try mkfs.btrfs -d raid1
>
> This maybe help:
> mkfs.btrfs [-A <offset>] [-b <size>] [-l <size>] [-n <size>] [-l
> <label>] [-s <size>] [-m raid0|raid1|raid10|single] [-d
> raid0|raid1|raid10|single] <device>
Thanks.
The problem still exists with -d option.
[r...@localhost ~]# mkfs.btrfs -m raid1 -d raid1 /dev/sdb8 /dev/sdb9 /dev/sdb10
/dev/sdb11
adding device /dev/sdb9 id 2
adding device /dev/sdb10 id 3
adding device /dev/sdb11 id 4
fs created label (null) on /dev/sdb8
nodesize 4096 leafsize 4096 sectorsize 4096 size 74.50GB
Btrfs v0.16-29-g0d53b21
[r...@localhost ~]# btrfsctl -a
Scanning for Btrfs filesystems
[r...@localhost ~]# mount -t btrfs /dev/sdb8 /mnt/btrfs
[r...@localhost ~]# df -h /dev/sdb8
Filesystem Size Used Avail Use% Mounted on
/dev/sdb8 75G 28K 75G 1% /mnt/btrfs
[r...@localhost ~]# dd if=/dev/zero of=/mnt/btrfs/file bs=1024 count=1024
1024+0 records in
1024+0 records out
1048576 bytes (1.0 MB) copied, 0.0199063 s, 52.7 MB/s
[r...@localhost ~]# sync
[r...@localhost ~]# df -h /dev/sdb8
Filesystem Size Used Avail Use% Mounted on
/dev/sdb8 75G 1.1M 75G 1% /mnt/btrfs
>
> 2008/12/31 Shen Feng <s...@cn.fujitsu.com>:
>>
>> on 12/30/2008 09:44 AM, Shen Feng wrote:
>>> Hi,
>>>
>>> I create a raid-1 btrfs with the following command.
>>>
>>> [r...@localhost ~]# fdisk -l /dev/sdb
>>>
>>> Disk /dev/sdb: 320.0 GB, 320072933376 bytes
>>> 255 heads, 63 sectors/track, 38913 cylinders
>>> Units = cylinders of 16065 * 512 = 8225280 bytes
>>> Disk identifier: 0xb44829ea
>>>
>>> Device Boot Start End Blocks Id System
>>> /dev/sdb1 1 4863 39062016 83 Linux
>>> /dev/sdb2 4864 9726 39062047+ 83 Linux
>>> /dev/sdb3 9727 38905 234375905+ f W95 Ext'd (LBA)
>>> /dev/sdb5 9727 14590 39063374 83 Linux
>>> /dev/sdb6 14590 19453 39068690+ 7 HPFS/NTFS
>>> /dev/sdb7 19454 29178 78116031 83 Linux
>>> /dev/sdb8 29179 31610 19535008+ 83 Linux
>>> /dev/sdb9 31611 34041 19526976 83 Linux
>>> /dev/sdb10 34042 36473 19535008+ 83 Linux
>>> /dev/sdb11 36474 38904 19526976 83 Linux
>>>
>>> [r...@localhost ~]# mkfs.btrfs -m raid1 /dev/sdb8 /dev/sdb9 /dev/sdb10
>>> /dev/sdb11
>>> adding device /dev/sdb9 id 2
>>> adding device /dev/sdb10 id 3
>>> adding device /dev/sdb11 id 4
>>> fs created label (null) on /dev/sdb8
>>> nodesize 4096 leafsize 4096 sectorsize 4096 size 74.50GB
>>> Btrfs v0.16-29-g0d53b21
>>>
>>> [r...@localhost ~]# mount -t btrfs /dev/sdb8 /mnt/btrfs[r...@localhost ~]#
>>> df
>>> Filesystem 1K-blocks Used Available Use% Mounted on
>>> ...
>>> /dev/sdb8 78123968 28 78123940 1% /mnt/btrfs
>>>
>> More test:
>>
>> [r...@localhost btrfs]# df -h /dev/sdb8
>> Filesystem Size Used Avail Use% Mounted on
>> /dev/sdb8 75G 28K 75G 1% /mnt/btrfs
>> [r...@localhost btrfs]# dd if=/dev/zero of=/mnt/btrfs/file bs=1024 count=1024
>> 1024+0 records in
>> 1024+0 records out
>> 1048576 bytes (1.0 MB) copied, 0.0481317 s, 21.8 MB/s
>> [r...@localhost btrfs]# sync
>> [r...@localhost btrfs]# df -h /dev/sdb8
>> Filesystem Size Used Avail Use% Mounted on
>> /dev/sdb8 75G 1.1M 75G 1% /mnt/btrfs
>>
>> With raid-1, the used space may be double (about 2.2M), I think.
>>
>>
>>
>>> I think the partition size is no correct since this is a raid-1 partition.
>>> The size should be half.
>>> Is this a bug?
>>>
>>> -Shen
>>> --
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>>>
>> --
>> Best Regards,
>> --------------------------------------------------
>> Shen Feng
>> Development Dept.I
>> Nanjing Fujitsu Nanda Software Tech. Co., Ltd.(FNST)
>> 8/F., Civil Defense Building, No.189 Guangzhou Road,
>> Nanjing, 210029, China
>> PHONE: +86-25-86630566-950
>> COINS: 79955-950
>> FAX: +86-25-83317685
>> MAIL: s...@cn.fujitsu.com
>> -------------------------------------------------
>> This communication is for use by the intended recipient(s) only and may
>> contain information that is privileged, confidential and exempt from
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>
>
>
--
Best Regards,
--------------------------------------------------
Shen Feng
Development Dept.I
Nanjing Fujitsu Nanda Software Tech. Co., Ltd.(FNST)
8/F., Civil Defense Building, No.189 Guangzhou Road,
Nanjing, 210029, China
PHONE: +86-25-86630566-950
COINS: 79955-950
FAX: +86-25-83317685
MAIL: s...@cn.fujitsu.com
-------------------------------------------------
This communication is for use by the intended recipient(s) only and may contain
information that is privileged, confidential and exempt from disclosure under
applicable law. If you are not an intended recipient of this communication, you
are hereby notified that any dissemination, distribution or copying hereof is
strictly prohibited. If you have received this communication in error, please
notify me by reply e-mail, permanently delete this communication from your
system, and destroy any hard copies you may have printed.
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