如何在邏輯捲上設置根文件系統? 在IBM上說可以在邏輯捲上設置根文件系統,但是我的E文太差,LINUX才開始學習,所以麻煩各位前輩了. HOW TO BOOT YOUR ROOT FS OFF OF LVM --- The following is an email I recieved from Michael, interspersed with my own comments. [Also, it may not be valid for more up-to-date versions of LVM, it was written back in the pre-1.0 days. -DJE.] Date: Fri, 20 Oct 2000 23:41:44 +0200 From: Michael Muehrenberg <Michael.Muehrenberg@t-online.de>; To: Dominic J. Eidson <sauron@the-infinite.org>; Am Freitag, 20. Oktober 2000 23:39 schrieben Sie: >; Have a short/quick howto on setting up booting off of an initrd to allow >; the root filesystem (and others) to be on LVM? It goes something like this: Can i have my root filesystem in a logical volume? Yes you can. There's basic support since LVM 0.7 to create an initial ram disk containing the necessary executables, device specials etc. to switch to a logical volume containing a root filesystem. See script lvmcreate_initrd(8). lvmcreate_initrd creates a new compressed initial ramdisk in /boot/initrd.gz. The initial ramdisk contains all nec- essary binaries, shared libraries and a linuxrc file to switch to a logical volume based root filesystem. To build an initial ramdisk for a not running but generated kernel add the KernelVersion parameter (for eg. 2.3.25) on the command line. The necessary actions to change your system into a "root on logical volume" one are: Create a small (~20MB) partition which is bios reachable to hold the /boot filesystem (if you already have a small partition based root filesystem this can as well be used). If you like to standalone boot from this partition in case of an emergency, copy all necessary binaries and libraries to that filesystem as well and create a corresponding /etc/lilo.conf entry. In order to be able to edit lilo.conf in case you booted standalone, you should move /etc/lilo.conf to /boot/lilo.conf and create a symbolic link to it in /etc instead. This is not needed if you have a boot/root floppy which contains the LVM binaries and the library in addition. Create all logical volumes you need (for root, usr, opt etc.), create filesystems in them, mount them and transfer all files from the partition based filesystems into the logical volumes based ones. You have to setup your /etc/lilo.conf with a boot configuration like: image = /boot/vmlinuz initrd = /boot/initrd.gz root = /dev/YourVG/YourRootLV label = rootonlv append = "ramdisk_size=8192" Replace YourVG and YourRootLV by your actual volume group and root logical volume names. In addition to that your /etc/fstab in your root logical volume has to contain: /dev/YourVG/YourRootLV /     ext2   defaults   0   1 /dev/YourBootPartition       /boot ext2   defaults   0   2 /dev/YourVG/YourUsrLV        /usr  ext2   defaults   0   3 /dev/YourVG/YourOptLV        /opt  ext2   defaults   0   4 etc. You can use other supported filesystem types as well (reiserfs for eg.) in case you generated support for those into your kernel. Run lilo, reboot and try... The partitions containing the former /usr, /opt etc. filesystems can now be used as physical volumes. pvcre- ate(8) them and add them for eg. to YourVG. lvcmcreate_initrd return 0 for success. 1 is returned in all other cases. The only things I had to do, was uncompress and mount the initrd.gz image, and remove the "insmod lvm" line - I was using a SuSE 6.4 install, and lvm support was compiled into the kernel already. After this it worked just fine. Feel free to email me with any questions/comments - email address is above. 如何在邏輯捲上設置根文件系統? 在什麼版本上 如果新安裝操作系統的話，可以選擇安裝到lvm上 如何在邏輯捲上設置根文件系統? 在AS3.0安裝時是不可以的.要不就是我不知道如何設置？ 如何在邏輯捲上設置根文件系統? redhat9上我到是會一點，這個沒有試過！ 如何在邏輯捲上設置根文件系統? Linux上的ＬＶＭ好像有說除了/和/boot外，其他的分區都可以安排在ＬＶＭ上， 如何在邏輯捲上設置根文件系統? 現在就是要把/和/boot放在lvm上 如何在邏輯捲上設置根文件系統? 關注................... 如何在邏輯捲上設置根文件系統? 這樣你把/和/boot分區的數據先備份到另外一個大的硬盤分區裡,然後建立LVM,然後在把這裡的文件回寫回去,記者格式化成ext3 你適時應該可以的! 呵呵,/boot是不能裝在LVM上的,因為內核加載時要讀物理磁盤,那時內核還不認LVM呢! [ 關閉窗口 ]