2
votes
2answers
49 views

How does grub2 load the kernel from an LVM volume?

Grub2 is able to load the kernel even if /boot is placed on an LVM volume. To use this feature one needs to add insmod lvm (the module can be on the grub bios partition that is not on an LVM volume) ...
1
vote
0answers
21 views

what is the “System ID” of a LVM volume group

On my system, where I use LVM2, I have several volume groups. When I run sudo vgdisplay, I see that all of them have an empty System ID field. What is that field for? Is that correct to have it empty ...
3
votes
2answers
228 views

Grow LVM RAID10?

RHEL LVM has supported RAID4/5/6 as of 6.3 and RAID10 as of 6.4. It's well-known that mdadm won't let you --grow raid10, my question is whether this is a limitation of LVM RAID10 too? If it is ...
1
vote
0answers
106 views

dm snapshot - how does it work?

Fedora uses dm-snapshot for making the root filesystem read-write. At least for me, when running a livecd (even without touching it), it will become unusable relatively quickly meaning it has ...
2
votes
0answers
132 views

Extending/resizing Fedora Guest-OS root-drive in VirtualBox

I hope you can help me with that: My VirtualBox Guest-OS (Fedora 19) told me, that there is not enough free disk-space availabe, so I first increased the .vdi-file by using the Windows-Commandline: ...
2
votes
2answers
108 views

Why is LVM metadata backed up to /etc/lvm and not /boot?

Recent question I saw got me thinking on this particular point: If bootloader restrictions usually cause /boot to be outside LVM, why isn't this the target of LVM metadata backups? Putting it ...
0
votes
2answers
330 views

list the devices associated with logical volumes without using lvm2 package commands

I want to list all the physical volume associated with logical volume. I know lvdisplay, pvscan, pvdisplay -m could do the job. but I don't want to use these commands. Is there any other way to do it ...
2
votes
1answer
108 views

Having trouble with LVM snapshot

I have a funtoo linux machine which I am trying to add ubuntu to (thats a whole other issue). It is encrypted with luks and has lvm on top of that. I have a 2 TB harddrive (sdb) which I would like ...
1
vote
1answer
159 views

Reading encrypted partition with broken LVM2 inside?

I overwrote some LVM2 metadata in much the same way as Recovering overwritten LVM metadata . That is, I attempted to install Debian 6.0.7 on a system with existing encrypted volumes and LVM2 volumes. ...
0
votes
1answer
249 views

Fedora 17-15 old lvm partition reporting incorrect size

After years i decided to upgrade from Fedora 15 to 18, but as per the guidelines only 2 versions can be jumped, so i decided to settle with Fedora 17 and ran preupgrade , all was going fine, till ...
2
votes
2answers
219 views

Transfering whole linux system to a new disk

Few weeks back I installed linux as a virtual machine on my windows 7 system but I didn't gave much thought to(or miscalculated) the size of various partitions and even worse I'm not using 'lvm'. ...
1
vote
2answers
2k views

How to extend LVM in RHEL 5.6

I need to extend the LVM on one server. This is the output of df -h: Filesystem Size Used Avail Use% Mounted on /dev/cciss/c0d0p2 58G 26G 29G 48% / ...
6
votes
3answers
925 views

merging LVM volume groups

Situation: I have a server with 4 1TB drives in LVM as shown below. The server is a openvz hardware node with a dozen or so openvz containers. At this time each container uses one disk only. This ...
2
votes
1answer
356 views

Recover MDADM Raid 5 in LVM with badblocks

I'm pretty sure I'm dealing with at stuffed RAID 5 array. Two of the drives were listed as failed in /proc/mdstat and mdadmdetails: 0 0 8 33 0 active sync /dev/sdc1 ...
5
votes
1answer
96 views

Why do some of my lvm partitions have “-real” appended to their names?

In the /dev/mapper directory I can see my lvm partitions, but then I'll see some other ones with the same names, but with "-real" appended to them. What's that about?
9
votes
1answer
2k views

Defragmentation of LVM2 logical volumes

Question: Is there a tool supporting de-fragmentation of LVM2 logical volumes ? (Making their extents into consistent sequences) Preferably by defining desired order of extents (something like ...
3
votes
1answer
244 views

Create Logical Volume Snapshot at boot and before mount

I'm using Kubuntu 11.10 and before I upgrade to 12.04, I want to make snapshots of my filesystems. Coming to think of that, I realized that it can be very useful to create snapshots of logical volumes ...