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系统环境:Centos6.7 x86_64 己updte
磁盘:12*4T raid5 +hot
说明:操作系统与归档都使用同一个raid5
应用环境:邮局系统【文件大小从1K到100K不等,除附件】
一、查看分区 【fdisk -l】
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[root@localhost sysadmin] # fdisk -l WARNING: GPT (GUID Partition Table) detected on '/dev/sda' ! The util fdisk doesn't support GPT. Use GNU Parted. Disk /dev/sda : 40000.0 GB, 39999997214720 bytes 255 heads, 63 sectors /track , 4863055 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical /physical ): 512 bytes / 512 bytes I /O size (minimum /optimal ): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 267350 2147483647+ ee GPT |
说明:此时文件系统己经超过16T,OS默认将其转换成了GPT格式的,所以使用fdisk无法查看到准确的分区信息。
二、使用parted 查看分区信息
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[root@localhost sysadmin] # parted GNU Parted 2.1 Using /dev/sda Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) p Model: LSI AOC-USAS2LP-H8iR (scsi) Disk /dev/sda : 40.0TB Sector size (logical /physical ): 512B /512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 525MB 524MB ext4 2 525MB 263GB 262GB ext4 3 263GB 284GB 21.0GB ext4 4 284GB 288GB 4295MB linux-swap(v1) |
三、将余下的空间都分为/archive 作为归档的根目录
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(parted) mkpart /archive 288G -1 (parted) p Model: LSI AOC-USAS2LP-H8iR (scsi) Disk /dev/sda : 40.0TB Sector size (logical /physical ): 512B /512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 525MB 524MB ext4 2 525MB 263GB 262GB ext4 3 263GB 284GB 21.0GB ext4 4 284GB 288GB 4295MB linux-swap(v1) 5 288GB 40.0TB 39.7TB /archive (parted)q |
四、查看分区
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[root@localhost ~] # fdisk /dev/sda sda sda1 sda2 sda3 sda4 sda5 [root@localhost ~] # |
说明:此时己经找到新的分区【sda5】
五、修改/etc/mke2fd.conf
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#vim /etc/mke2fs.conf [fs_types] ext3 = { features = has_journal } ext4 = { features = has_journal,extent,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize auto_64-bit_support = 1 #添加这一行 inode_size = 256 } |
六、下载e2fsprogs-1.42.13.tar.gz
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[root@localhost ~] # wget -c http://jaist.dl.sourceforge.net/project/e2fsprogs/e2fsprogs/v1.42.8/e2fsprogs-1.42.13.tar.gz [root@localhost e2fsprogs-1.42.13] # pwd /home/sysadmin/e2fsprogs-1 .42.13 [root@localhost e2fsprogs-1.42.13] # cd build/ [root@localhost build] # ../configure .... [root@localhost build] # make && make install |
七、格式化分区
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[root@localhost ~] # mke2fs -O 64bit,has_journal,extents,huge_file,flex_bg,uninit_bg,dir_nlink,extra_isize -i 2048 /dev/sda5 [root@localhost build] # blkid /dev/sda1 : UUID= "908a3c8e-6d6a-4e01-8cad-2094ea99751f" TYPE= "ext4" /dev/sda3 : UUID= "b533714f-4cb9-4394-907d-8d1ead424c85" TYPE= "ext4" /dev/sda2 : UUID= "0a0ec20e-b50b-4d89-9fa6-65602e4e8a3d" TYPE= "ext4" /dev/sda4 : TYPE= "swap" UUID= "b8e89719-670f-4b26-bbf3-86d13a1f935e" /dev/sda5 : UUID= "3b5789ee-94c2-4296-bd99-5669200d826a" TYPE= "ext4" |
注:
mke2fs格式说明:
-b<区块大小>:指定区块大小,单位为字节;
-c;检查是否有损坏的区块;
-f<不连续区段大小>:指定不连续区段的大小,单位为字节;
-F:不管指定的设备为何,强制执行mke2fs;
-i<字节>:指定”字节/inode”的比例;
-N:指定要建立的inode数目;
-l<文件>:从指定的文件中,读取文件西中损坏区块的信息;
-L<标签>:设置文件系统的标签名称;
-m<百分比值>:指定给管理员保留区块的比例,预设为5%;
-M:记录最后一次挂入的目录; -q:执行时不显示任何信息;
-r:指定要建立的ext2文件系统版本;
-R=<区块数>:设置磁盘阵列参数;
-S:仅写入superblock与group descriptors,而不更改inode able inode bitmap以及block bitmap;
-v:执行时显示详细信息;
-V:显示版本信息。
八、将对应的分区挂载即可以使用
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[root@localhost build] # df -h Filesystem Size Used Avail Use% Mounted on /dev/sda3 20G 2.4G 16G 14% / tmpfs 7.8G 0 7.8G 0% /dev/shm /dev/sda1 477M 80M 372M 18% /boot /dev/sda2 241G 120M 228G 1% /home /dev/sda5 36T 20K 34T 1% /archive [root@localhost build] # df -i Filesystem Inodes IUsed IFree IUse% Mounted on /dev/sda3 1281120 91214 1189906 8% / tmpfs 2040386 1 2040385 1% /dev/shm /dev/sda1 128016 46 127970 1% /boot /dev/sda2 16007168 1955 16005213 1% /home /dev/sda5 4293781536 11 4293781525 1% /archive |
九、查看磁盘信息
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[root@localhost build] # tune2fs -l /dev/sda5 tune2fs 1.42.13 (17-May-2015) Filesystem volume name: <none> Last mounted on: <not available> Filesystem UUID: 3b5789ee-94c2-4296-bd99-5669200d826a Filesystem magic number: 0xEF53 Filesystem revision #: 1 (dynamic) Filesystem features: has_journal ext_attr dir_index filetype needs_recovery extent 64bit flex_bg sparse_super huge_file uninit_bg dir_nlink extra_isize Filesystem flags: signed_directory_hash Default mount options: user_xattr acl Filesystem state: clean Errors behavior: Continue Filesystem OS type : Linux Inode count: 4293781536 Block count: 9695327232 Reserved block count: 484766361 Free blocks: 9426221107 Free inodes: 4293781525 First block: 0 Block size: 4096 Fragment size: 4096 Group descriptor size: 64 Blocks per group: 32768 Fragments per group: 32768 Inodes per group: 14512 Inode blocks per group: 907 Flex block group size: 16 Filesystem created: Thu Oct 15 15:27:56 2015 Last mount time : Thu Oct 15 15:33:50 2015 Last write time : Thu Oct 15 15:33:50 2015 Mount count: 1 Maximum mount count: 33 Last checked: Thu Oct 15 15:27:56 2015 Check interval: 15552000 (6 months) Next check after: Tue Apr 12 15:27:56 2016 Lifetime writes: 202 MB Reserved blocks uid: 0 (user root) Reserved blocks gid: 0 (group root) First inode: 11 Inode size: 256 Required extra isize: 28 Desired extra isize: 28 Journal inode: 8 Default directory hash : half_md4 Directory Hash Seed: 56a5949a-5a49-4bc9-810d-9a9e2aa2109b Journal backup: inode blocks |
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