Lvm
LVM 分區被檢測為錯誤大小
我負責的伺服器顯示驅動器（已滿）並且比驅動器應該小得多。我對 LVM 的了解不夠深入，無法理解原因。我可以從一雙嶄新的眼睛中獲得一些幫助，因為我一直在抓撓（和敲打）我的頭。
我有一個 352 GB 的邏輯卷 /dev/sdrive/shared。我的作業系統，
Ubuntu 14.04.01似乎只認為/dev/mapper/sdrive-shared是 126GB。我不知道我搞砸了或做錯了什麼導致這個或如何解決它。下面我將包含我知道的用於調查問題的命令的輸出。我看不出它是從哪裡獲得 126GB 的。有些事情對我來說似乎是錯誤（比如 fdisk 抱怨分區表，但 parted 顯示正常）但搜尋一些論壇說這是 LVM 的預期行為。同樣，我的知識太弱而無法診斷，我正在抓住稻草並感謝任何幫助。
login as: itdept itdept@192.168.0.92's password: Welcome to Ubuntu 14.04.1 LTS (GNU/Linux 3.13.0-49-generic i686) * Documentation: https://help.ubuntu.com/ System information as of Mon Apr 27 08:45:41 EDT 2015 System load: 0.0 Processes: 109 Usage of /: 18.1% of 34.82GB Users logged in: 1 Memory usage: 3% IP address for eth0: 192.168.0.92 Swap usage: 0% => /srv/shared is using 100.0% of 125.87GB Graph this data and manage this system at: https://landscape.canonical.com/ Last login: Mon Apr 27 08:45:45 2015 from 192.168.0.84 itdept@SFTP-SVR:~$ sudo su [sudo] password for itdept: root@SFTP-SVR:/home/itdept# pvdisplay --- Physical volume --- PV Name /dev/xvdc1 VG Name sdrive PV Size 384.00 GiB / not usable 3.00 MiB Allocatable yes PE Size 4.00 MiB Total PE 98303 Free PE 8191 Allocated PE 90112 PV UUID xeWJim-n58M-hvzd-3DbA-Nlgz-d3l1-e7IiG7 root@SFTP-SVR:/home/itdept# vgdisplay --- Volume group --- VG Name sdrive System ID Format lvm2 Metadata Areas 1 Metadata Sequence No 5 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 1 Max PV 0 Cur PV 1 Act PV 1 VG Size 384.00 GiB PE Size 4.00 MiB Total PE 98303 Alloc PE / Size 90112 / 352.00 GiB Free PE / Size 8191 / 32.00 GiB VG UUID UsISz5-zVvV-HnQe-5szT-mgxr-qrql-tlCU3J root@SFTP-SVR:/home/itdept# lvdisplay --- Logical volume --- LV Path /dev/sdrive/shared LV Name shared VG Name sdrive LV UUID MoIYg0-XhWd-t931-U7Tz-5hw8-YDDr-qXUfkb LV Write Access read/write LV Creation host, time SFTP-SVR, 2014-09-15 18:02:18 -0400 LV Status available # open 1 LV Size 352.00 GiB Current LE 90112 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 252:0 root@SFTP-SVR:/home/itdept# df -h Filesystem Size Used Avail Use% Mounted on /dev/xvda1 35G 6.4G 27G 20% / none 4.0K 0 4.0K 0% /sys/fs/cgroup udev 2.0G 4.0K 2.0G 1% /dev tmpfs 404M 236K 404M 1% /run none 5.0M 0 5.0M 0% /run/lock none 2.0G 0 2.0G 0% /run/shm none 100M 0 100M 0% /run/user /dev/mapper/sdrive-shared 126G 126G 0 100% /srv/shared 192.168.0.201:/mnt/HD/HD_a2 732G 187G 546G 26% /mnt/ShareCenter 172.29.0.5:/mnt/UVB-CITRIX-01/Rdiff-Backup 8.7T 357G 8.4T 5% /mnt/RdiffBackup root@SFTP-SVR:/home/itdept# parted -l Model: Linux device-mapper (linear) (dm) Disk /dev/mapper/sdrive-shared: 378GB Sector size (logical/physical): 512B/512B Partition Table: loop Number Start End Size File system Flags 1 0.00B 378GB 378GB ext4 Model: Xen Virtual Block Device (xvd) Disk /dev/xvda: 38.7GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 38.1GB 38.1GB primary ext4 2 38.1GB 38.7GB 535MB extended 5 38.1GB 38.7GB 535MB logical linux-swap(v1) Error: /dev/xvdb: unrecognised disk label Model: Xen Virtual Block Device (xvd) Disk /dev/xvdc: 550GB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 1049kB 481GB 481GB primary lvm root@SFTP-SVR:/home/itdept# fdisk -l Disk /dev/xvda: 38.7 GB, 38654705664 bytes 255 heads, 63 sectors/track, 4699 cylinders, total 75497472 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 identifier: 0x0003ec0e Device Boot Start End Blocks Id System /dev/xvda1 2048 74448895 37223424 83 Linux /dev/xvda2 74450942 75495423 522241 5 Extended /dev/xvda5 74450944 75495423 522240 82 Linux swap / Solaris Disk /dev/xvdc: 549.8 GB, 549755813888 bytes 64 heads, 1 sectors/track, 16777216 cylinders, total 1073741824 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 identifier: 0x1f2d154a Device Boot Start End Blocks Id System /dev/xvdc1 2048 939526143 469762048 8e Linux LVM Disk /dev/xvdb: 268.4 GB, 268435456000 bytes 255 heads, 63 sectors/track, 32635 cylinders, total 524288000 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 identifier: 0x00000000 Disk /dev/xvdb doesn't contain a valid partition table Disk /dev/mapper/sdrive-shared: 378.0 GB, 377957122048 bytes 255 heads, 63 sectors/track, 45950 cylinders, total 738197504 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 identifier: 0x00000000 Disk /dev/mapper/sdrive-shared doesn't contain a valid partition table root@SFTP-SVR:/home/itdept# cat /etc/fstab # /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 # / was on /dev/xvda1 during installation UUID=1ad70e2c-38b8-4c71-937a-36e1775ccc10 / ext4 errors=remount-ro 0 1 # swap was on /dev/xvda5 during installation UUID=e4d98211-c0f2-4b97-ab88-28e52e47b5f1 none swap sw 0 0 # ShareCenter NFS 192.168.0.201:/mnt/HD/HD_a2 /mnt/ShareCenter nfs defaults,rw,auto 0 0 # RdiffBackup on SAM-SD NFS for Backups 172.29.0.5:/mnt/UVB-CITRIX-01/Rdiff-Backup /mnt/RdiffBackup nfs defaults,auto,rw 0 0 # shared for sdrive (LVM, ext4) /dev/sdrive/shared /srv/shared ext4 rw,noatime,auto 0 0
這是擴展 lv 而不是其上的文件系統時的外觀。在 lv 上獲得所需大小後的下一步是在那裡增長文件系統。這可以用 來執行
resize2fs /dev/sdrive/shared。