1、无法初始化物理量,之前创建的cinder-volumes没有卸载
Can't initialize physical volume "/dev/sdb" of volume group "cinder-volumes" without -ff dev/sdb: physical volume not initialized.
方法一:
[root@storage cinder]# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 20G 0 disk
├─sda1 8:1 0 1G 0 part boot
└─sda2 8:2 0 19G 0 part
├─cl-root 253:0 0 17G 0 lvm
└─cl-swap 253:1 0 2G 0 lvm [SWAP]
sdb 8:16 0 20G 0 disk
sr0 11:0 1 4.1G 0 rom
[root@storage cinder]# pvcreate -ff -y dev/sda1 执行命令后重新创建即可
Device dev/sda1 excluded by a filter.
[root@storage cinder]# pvcreate -ff -y dev/sdb
' Physical volume "/dev/sdb" successfully created.
[root@storage cinder]# vgcreate cinder-volumes dev/sdb
Volume group "cinder-volumes" successfully created
方法二:
按顺序先后卸载逻辑卷、卷组(必要时还要卸载物理卷):
[root@storage cinder]# lvremove dev/cinder-volumes/LogVol00**
[root@storage cinder]# vgremove cinder-volumes
成功卸载后再重新执行sudo pvcreate dev/cciss/c0d1p1,不再有错误发生。
接着执行后续动作来创建LVM。
2、创建pv卷报错Device dev/sdb2 excluded by a filter的解决方法
创建pv卷报错Device dev/sdb2 excluded by a filter,原因大概是之前装的windows系统,改为了linux系统,无法找到分区表导致,需要重建下分区表。
具体操作如下:
[root@localhost ~]# parted dev/sdb
GNU Parted 3.1
Using dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) mklabel msdos
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? yes
(parted) quit
Information: You may need to update etc/fstab.
然后在重新分区,重新创建pv创建成功。
在创建的时候会提示是否擦除NTFS的签名,选择yes即可
[root@localhost ~]# pvcreate dev/sdb1
WARNING: ntfs signature detected on dev/sdb1 at offset 3. Wipe it? [y/n]: y
Wiping ntfs signature on dev/sdb1.
Physical volume "/dev/sdb1" successfully created.
3、xfs和ext4两种扩容方式
#若不是xfs我们可以用resize2fs
[root@Mysql01-213-66 ~]# resize2fs -f /dev/mapper/vg_mysql0121366-LogVol01
resize2fs 1.41.12 (17-May-2010)
resize2fs: Bad magic number in super-block while trying to open /dev/mapper/vg_mysql0121366-LogVol01
Couldn't find valid filesystem superblock.
#xfs扩容方式
[root@Mysql01-213-66 ~]# xfs_growfs /dev/mapper/vg_mysql0121366-LogVol01
meta-data=/dev/mapper/vg_mysql0121366-LogVol01 isize=256 agcount=4, agsize=524288 blks
= sectsz=512 attr=2, projid32bit=0
data = bsize=4096 blocks=2097152, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 2097152 to 7077888
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