Can‘t open /dev/sdb1 exclusively. Mounted filesystem? --redhat7.8
2024-03-22 15:53:21
今天在创建pv的时候报了上面那个错误：
root@db01[/root]#pvcreate /dev/sdb1Can't open /dev/sdb1 exclusively. Mounted filesystem?Can't open /dev/sdb1 exclusively. Mounted filesystem?然而，检查/dev/sdb1是存在的：
root@db01[/root]#fdisk -l
WARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.Disk /dev/sdb: 16000.9 GB, 16000900661248 bytes, 31251759104 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: gpt
Disk identifier: DBF28ACD-0FCD-4599-89F3-3D4569D976EE# Start End Size Type Name1 34 16000000000 7.5T Microsoft basic primaryDisk /dev/sda: 299.4 GB, 299439751168 bytes, 584843264 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk label type: dos
Disk identifier: 0x000711cbDevice Boot Start End Blocks Id System
/dev/sda1 * 2048 2099199 1048576 83 Linux
/dev/sda2 2099200 297805823 147853312 8e Linux LVMDisk /dev/sdc: 16000.9 GB, 16000900661248 bytes, 31251759104 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes这台机器的情况是，利旧的dell R730，之前装过系统，后来将原来的系统铲掉了，装的新的redhat7.8系统。而该机器除了操作系统的两块600g的盘，还有另外24块盘，分别做了2个raid5，每个raid5大小16T。因为之前这机器做mysl服务器用的，所以之前mysql的数据盘就建在其中一个raid5里面，装了新系统后，只是将操作系统的两块raid1的盘干掉了，剩下两个raid5的盘的东西还在，装完系统就自动识别到了。我们检查来确定。
root@db01[/root]#lvscanACTIVE '/dev/vg00/lvhome' [10.00 GiB] inheritACTIVE '/dev/vg00/lvroot' [10.00 GiB] inheritACTIVE '/dev/vg00/lvopt' [10.00 GiB] inheritACTIVE '/dev/vg00/lvtmp' [10.00 GiB] inheritACTIVE '/dev/vg00/lvusr' [15.00 GiB] inheritACTIVE '/dev/vg00/lvvar' [20.00 GiB] inheritACTIVE '/dev/vg00/swap' [16.00 GiB] inheritACTIVE '/dev/vg00/lvoracle' [30.00 GiB] inheritACTIVE '/dev/vg00/lvsoft' [20.00 GiB] inherit
root@db01[/root]#pvscanPV /dev/sda2 VG vg00 lvm2 [141.00 GiB / 0 free]Total: 1 [141.00 GiB] / in use: 1 [141.00 GiB] / in no VG: 0 [0 ]root@db01[/root]#cat /proc/partitions
major minor #blocks name8 16 15625879552 sdb8 17 7999999983 sdb18 0 292421632 sda8 1 1048576 sda18 2 147853312 sda28 32 15625879552 sdc253 0 10485760 dm-0253 1 16777216 dm-1253 2 15728640 dm-2253 3 104857600 dm-3253 4 10485760 dm-4253 5 10485760 dm-5253 6 10485760 dm-6253 7 20971520 dm-7253 8 31457280 dm-8253 9 20971520 dm-97 0 4444160 loop0
root@db01[/root]#dmsetup status
vg00-lvtmp: 0 20971520 linear
vg00-lvsoft: 0 41943040 linear
vg00-lvusr: 0 31457280 linear
vg00-lvvar: 0 41943040 linear
vg00-swap: 0 33554432 linear
vg01-lvmysql: 0 209715200 linear
vg00-lvhome: 0 20971520 linear
vg00-lvopt: 0 20971520 linear
vg00-lvoracle: 0 62914560 linear
vg00-lvroot: 0 20971520 linear
root@db01[/root]#dmsetup ls
vg00-lvtmp (253:6)
vg00-lvsoft (253:9)
vg00-lvusr (253:2)
vg00-lvvar (253:7)
vg00-swap (253:1)
vg01-lvmysql (253:3)
vg00-lvhome (253:4)
vg00-lvopt (253:5)
vg00-lvoracle (253:8)
vg00-lvroot (253:0)
root@db01[/root]#ll /dev/mapper/
total 0
crw------- 1 root root 10, 236 Dec 25 09:17 control
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvhome -> ../dm-4
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvopt -> ../dm-5
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvoracle -> ../dm-8
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvroot -> ../dm-0
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvsoft -> ../dm-9
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvtmp -> ../dm-6
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvusr -> ../dm-2
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvvar -> ../dm-7
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-swap -> ../dm-1
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg01-lvmysql -> ../dm-3可以看到，在/dev/mapper下面，有个vg01-lvmysql的逻辑块，这个并不是我创建的，因为该机器刚装的系统，我只创建了一个vg00。
只需要将该lv删除即可。
root@db01[/root]#dmsetup remove vg01-lvmysql
root@db01[/root]#ll /dev/mapper/
total 0
crw------- 1 root root 10, 236 Dec 25 09:17 control
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvhome -> ../dm-4
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvopt -> ../dm-5
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvoracle -> ../dm-8
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvroot -> ../dm-0
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvsoft -> ../dm-9
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvtmp -> ../dm-6
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvusr -> ../dm-2
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-lvvar -> ../dm-7
lrwxrwxrwx 1 root root 7 Dec 25 11:59 vg00-swap -> ../dm-1
root@db01[/root]#pvcreate /dev/sdb1Physical volume "/dev/sdb1" successfully created.
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