On 02/02/14 15:15, Chris Murphy wrote:
On Feb 2, 2014, at 8:56 AM, "Bob Goodwin - Zuni, Virginia, USA" <bobgoodwin@xxxxxxxxxxxx> wrote:
I have a computer with a 1TB drive taken up completely with an F-19 system. I'd like to squeeze that down and make room for anther Linux partition but I can't seem to get started.
I have an F-19 DVD that I have been trying to use for booting into the "rescue" mode but I may not be doing it right. I can stumble through until I get a point where it says "An error occurred trying to mount some or all of your system. Some of it may be mounted under /mnt/sysimage. Press return to get a shell."
That gets another box offering: start shell, fakd, reboot.
From the shell I do chroot /mnt/sysimage.
Then ls lists a familiar list of directories, however there is nothing in those directories e.g. home, root, etc.
At that point I am stumped!
Yet another example of how LVM by default is unhelpful for mortal users.
Is this BIOS or UEFI? Is the partition scheme MBR or GPT? Please show what layout you currently have, and what layout your other Linux installation requires.
It's good old DELL computer built before UEFI became common. I assume
MBR. Presently it has only Fedora-19, I believe I installed it from the
XFCE Live spin.
I would like to install Fedora-20 and Centos 6.5 while keeping the
present install. I will probably avoid the LVM next for F-20 and Centos
if I can.
Please provide the results from:
parted -s /dev/sdX u s p
[root@box7 bobg]# parted -s /dev/sda u s p
Model: ATA SAMSUNG HD103SJ (scsi)
Disk /dev/sda: 1953525168s
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:
Number Start End Size Type File system Flags
1 2048s 1026047s 1024000s primary ext4 boot
2 1026048s 1953523711s 1952497664s primary lvm
[root@box7 bobg]# fdisk -l /dev/sda
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes, 1953525168 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: 0x000e1c28
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 1026047 512000 83 Linux
/dev/sda2 1026048 1953523711 976248832 8e Linux LVM
And for the new layout, I'm thinking it needs its own /boot partition and will use LVM for everything else, yes?
What have you done so far? You shouldn't have empty directories.
I haven;t changed anything so far, just tried to follow a set of
instructions I Googled. Stopped since I can't get the Linux Rescue to
work or at least produce a result that I have some confidence in. Dunno
why those directories show as empty? They are still good, the system
works. I have ssh'd into it to copy the results you requested.
Suggestions solicited, maybe I should just give up and re-install?
It's a lot easier to do this with GPT and plain partitions; and with Btrfs it's easy and efficient in that you can still have LV-like subvolumes but you don't have to deal with individually shrinking them.
For LVM the gist is you:
1. shrink a file system on an LV
2. shrink the LV
3. pvmove to move extents from the end of the LVM partition so that free extents are at the end
4. pvresize to shink the PV
5. vgreduce to account for the shrunk PV
6. fdisk/parted to change the PV partition size and create a new partition
system-storage-manager might be able to do some or all of those steps for you with a single command, but I haven't tried it.
Chris Murphy
I am leaning toward putting it off for a while to harvest as much as I
can from the F-19 install [there always seems to be something I've
missed] and then just start over with a new install. I would at least
like to see the rescue disk stuff work though.
Thanks for your response,
Bob
--
http://www.qrz.com/db/w2bod
Box10 Fedora-20/64bit Linux/XFCE
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