Linux 磁盘分区
问题一：
如果遇到下述问题：
[root@ostack-228-32 ~]# mount /dev/sdb /data/ mount: /dev/sdb is already mounted or /data busy
可以用此方式：
[root@ostack-228-32 ~]# dmsetup status VMDATA--node9-VMDATA--node9: 0 46816583680 thin-pool 0 15633/4145152 0/182877280 - rw no_discard_passdown queue_if_no_space - 1024 VMDATA--node9-VMDATA--node9_tdata: 0 46816583680 linear VMDATA--node9-VMDATA--node9_tmeta: 0 33161216 linear centos-swap: 0 268435456 linear centos-root: 0 629145600 linear [root@ostack-228-32 ~]# dmsetup remove_all [root@ostack-228-32 ~]# dmsetup status centos-swap: 0 268435456 linear centos-root: 0 629145600 linear
最后进行挂载：
[root@ostack-228-32 ~]# mkfs.xfs /dev/sdb mkfs.xfs: /dev/sdb appears to contain a partition table (dos). mkfs.xfs: Use the -f option to force overwrite. [root@ostack-228-32 ~]# mkfs.xfs /dev/sdb1 meta-data=/dev/sdb1 isize=512 agcount=32, agsize=16777216 blks = sectsz=4096 attr=2, projid32bit=1 = crc=1 finobt=0, sparse=0 data = bsize=4096 blocks=536870655, imaxpct=5 = sunit=64 swidth=192 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=1 log =internal log bsize=4096 blocks=262143, version=2 = sectsz=4096 sunit=1 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 [root@ostack-228-32 ~]# mount /dev/sdb1 /data
问题二：
fdsik 分区最大只能 2T 分区，需要使用 parted 分区
[root@ostack-228-32 ~]# parted /dev/sdb GNU Parted 3.1 Using /dev/sdb Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) p Model: UN LOGICAL VOLUME (scsi) Disk /dev/sdb: 24.0TB Sector size (logical/physical): 512B/4096B Partition Table: msdos Disk Flags: Number Start End Size Type File system Flags (parted) mklabel gpt Warning: The existing disk label on /dev/sdb will be destroyed and all data on this disk will be lost. Do you want to continue? Yes/No? y (parted) mkpart Partition name? []? sdb1 File system type? [ext2]? xfs Start? 0 End? 24.0TB Warning: The resulting partition is not properly aligned for best performance. Ignore/Cancel? Ignore (parted) p Model: UN LOGICAL VOLUME (scsi) Disk /dev/sdb: 24.0TB Sector size (logical/physical): 512B/4096B Partition Table: gpt Disk Flags: Number Start End Size File system Name Flags 1 17.4kB 24.0TB 24.0TB sdb1 (parted) quit Information: You may need to update /etc/fstab. [root@ostack-228-32 ~]# fdisk -l Disk /dev/sda: 480.1 GB, 480070426624 bytes, 937637552 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 262144 bytes / 262144 bytes Disk label type: dos Disk identifier: 0x000ca2b9 Device Boot Start End Blocks Id System /dev/sda1 * 2048 37959679 18978816 83 Linux /dev/sda2 37959680 935542783 448791552 8e Linux LVM WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion. Disk /dev/sdb: 24004.6 GB, 24004587945984 bytes, 46883960832 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 262144 bytes / 786432 bytes Disk label type: gpt Disk identifier: 67F6088B-A02E-4E5A-AAC5-2A06A017E61E # Start End Size Type Name 1 34 46883960798 21.9T Microsoft basic sdb1 Partition 1 does not start on physical sector boundary. Disk /dev/mapper/centos-root: 322.1 GB, 322122547200 bytes, 629145600 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 262144 bytes / 262144 bytes Disk /dev/mapper/centos-swap: 137.4 GB, 137438953472 bytes, 268435456 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 262144 bytes / 262144 bytes [root@ostack-228-32 ~]# mkfs.xfs /dev/sd sda sda1 sda2 sdb sdb1 [root@ostack-228-32 ~]# mkfs.xfs /dev/sdb1 warning: device is not properly aligned /dev/sdb1 Use -f to force usage of a misaligned device [root@ostack-228-32 ~]# mkfs.xfs -f /dev/sdb1 warning: device is not properly aligned /dev/sdb1 meta-data=/dev/sdb1 isize=512 agcount=32, agsize=183140480 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=0, sparse=0 data = bsize=4096 blocks=5860495095, imaxpct=5 = sunit=64 swidth=192 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=1 log =internal log bsize=4096 blocks=521728, version=2 = sectsz=512 sunit=64 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 [root@ostack-228-32 ~]# mount /dev/sdb1 /data/ [root@ostack-228-32 ~]# [root@ostack-228-32 ~]# [root@ostack-228-32 ~]# [root@ostack-228-32 ~]# df -Th Filesystem Type Size Used Avail Use% Mounted on devtmpfs devtmpfs 252G 0 252G 0% /dev tmpfs tmpfs 252G 0 252G 0% /dev/shm tmpfs tmpfs 252G 19M 252G 1% /run tmpfs tmpfs 252G 0 252G 0% /sys/fs/cgroup /dev/mapper/centos-root xfs 300G 4.0G 296G 2% / /dev/sda1 xfs 19G 192M 18G 2% /boot tmpfs tmpfs 51G 0 51G 0% /run/user/0 tmpfs tmpfs 60M 0 60M 0% /var/log/rtlog /dev/sdb1 xfs 22T 34M 22T 1% /data [root@ostack-228-32 ~]# vim /etc/fstab
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