Tagged Questions

-1
votes
1answer
28 views

Storage virtual machine. LVM or loop devices? [closed]

Actual situation: I'm the administrator of a virtual machine. The virtual machine is a Debian. This machine will be mainly a storage machine with different services (svn, ftp... ), and a webserver. ...
1
vote
0answers
48 views

Ubuntu 10.04 Server stuck at grub prompt

I have a virtualized server running 10.04 LTS that is no longer booting. We had a number of issues with our SAN that abruptly disconnected the storage from the virtual machine infrastructure and ...
1
vote
1answer
249 views

Problems mounting HPUX LVM+VXFS filesystem on Linux

I have a physical disk from a HPUX system that I need to access from a Debian Linux for ia64 system. From the hpux-lvm-tools project I have the tools to access the HPUX LVMs (Linux LVM has a different ...
0
votes
0answers
431 views

How To Recover A Partial LVM Logical Volume? [closed]

Update: We can use ddrescue to dump what's left in the root LV and then use photorec or testdisk to recover from the dump. Example: ddrescue -n /dev/mapper/VG-LV /path/to/the/dump ddrescue.log See: ...
-1
votes
1answer
148 views

How to mount logical volume?

I have this problem on mounting a logical volume. I have done some research and still have not found solution. I have read this http://superuser.com/questions/116617/how-to-mount-lvm-volume also but I ...
0
votes
0answers
394 views

XEN Domain crash - kernel panic

I have a server with CentOS 5.8.Final, running the 2.6.18-308.4.1.el5xen kernel. I installed the Virtualizorpanel 2 months ago and my VPS are OK, but yesterday one of my VPS crashed. I changed theRAM ...
0
votes
0answers
115 views

Cannot reference LVM2_member FS-based disks with /dev/disk

I'm playing with using LVM to concatenate a number of old disks into one big disk. I'd like to use /etc/hdparm.conf to modify the spin-down times at boot, so that most of these disks spin down asap. ...
-2
votes
4answers
343 views

How can I create one big volume from multiple drives, but loose only the files stored on one disk if it fails?

I am running a storage system. Fault tolerancy is handled at application level (files are stored on multiple servers, even datacenters). Therefore I don't need nor even want redundancy within one ...
5
votes
2answers
445 views

User reduced LVM logical volume without resizing filesystem

I received an email yesterday that one of our users was trying to make room for a heartbeat/clustering package which requires its own partition to act as a voting disk. To do this, he attempted to ...
2
votes
1answer
919 views

Resizing a LUKS encrypted volume

I have a 500GiB ext4 filesystem on top of LUKS on top of an LVM LV. I want to resize the LV to 100GiB. I know how to resize ext4 on top of an LVM LV, but how do I deal with the LUKS volume? ...
0
votes
0answers
637 views

Can't mount logical volume, RAID/MD/LVM problems

I have a file server with 48 2TB HDDs split across 2x 3ware 9650SE-24M8 RAID cards. Both cards have 24 drives in RAID 1+0. MD softraid is setup in raid 0 with the two RAID 1+0s making RAID 100. LVM2 ...
1
vote
1answer
905 views

How to increase filesystem size in RHEL v5.8?

Below is the partial output from the df -h command. Notice /var is setup as its own filesystem but has reached 100% of its 2GB size. How can I increase the size of the /dev/mapper/rootVG-var file ...
1
vote
1answer
442 views

lvm snapshot: how to get a list of changed, added, deleted files?

i have an lvm snapshot and i would like to see what files have been changed, added or deleted. (Just the file list is sufficient.) Is there an easy way to get the list? Thanks in advance for any ...
2
votes
1answer
2k views

How to remove bad disk from LVM2 with the less data loss on other PVs?

I had a LVM2 volume with two disks. The larger disk became corrupt, so I cant pvmove. What is the best way to remove it from the group to save the most data from the other disk? Here is my pvdisplay ...
4
votes
3answers
486 views

Which filesystems offer snapshot functionality for users to recover data?

I'm working on a project that will teach linux to youth. Knowing they will have a tendency to delete or corrupt items in their home directories we are looking for a good snapshot option. We will not ...
84
votes
4answers
20k views

LVM dangers and caveats

I have recently started using LVM on some servers for hard drives larger than 1 TB. They're useful, expandable and quite easy to install. However, I could not find any data about the dangers and ...
1
vote
3answers
958 views

How to transfer data from Linux to Solaris (OpenIndiana)?

I currently have my server setup with a Linux software RAID5 (mdamd). I have LVM on top of that, with ext3 filesystems on the Logical Volumes. This setup is mirrored on an external multi-drive ...
2
votes
1answer
776 views

25TiB for /home from 16TiB, what to do with ext3?

I have recently lvextend my logical volume (where /home is) from 16TiB to 25TiB. However, when I try to run extend2fs on my /dev/vtrak/home, it complains that resize2fs 1.41.12 (17-May-2010) ...
1
vote
2answers
1k views

LVM input/output error

When I run the lvdisplay, it showed the following error... /usr/sbin/lvdisplay /dev/sdb: read failed after 0 of 2048 at 0: Input/output error /dev/sdb1: read failed after 0 of 2048 at 0: ...
1
vote
3answers
323 views

linux raid 1 to lvm or not to lvm

I am getting ready to create a (hardware) RAID 1 array spanning three disks. Performance is not key here, just redundancy and ability to recover from data failure. The question: Should I use LVM? ...
1
vote
2answers
710 views

How can I minimise the size of an ext3 partition (and its LVM logical volume)?

I am using LVM on Ubuntu 9.10 (Karmic). I have a single LVM physical volume (and a single volume group). I have an ext3 filesystem inside an LVM logical volume which I no longer use, but for the time ...
16
votes
8answers
1k views

Optimal UNIX File System Partition + Setup Strategy

When partitioning a new system disk(s) for UNIX, what is your prefered strategy for both desktop and/or servers? Please include disk partition layout, file system format(s) and options, mount points, ...