Comments on: Restoring from LVM and VMWare disks http://www.dmi.me.uk/blog/2009/02/22/restoring-from-lvm-and-vmware-disks/ Thu, 22 Dec 2011 18:53:23 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Talkwards » Blog Archive » links for 2009-04-03 http://www.dmi.me.uk/blog/2009/02/22/restoring-from-lvm-and-vmware-disks/comment-page-1/#comment-136 Talkwards » Blog Archive » links for 2009-04-03 Fri, 03 Apr 2009 23:06:16 +0000 http://www.dmi.me.uk/blog/?p=91#comment-136 [...] Restoring from LVM and VMWare disks | A mind less ordinary With just a complete image of the host system, I would need to restore (deep breath) files on a partition on an LVM logical volume (inside a volume group, on a physical volume) in a VMWare hard disk stored on LVM (logical volume inside volume group of physical volumes) inside a disk image that is itself a file on a disk. How very convoluted. (tags: lvm vmware linux sysadmin) [...] [...] Restoring from LVM and VMWare disks | A mind less ordinary With just a complete image of the host system, I would need to restore (deep breath) files on a partition on an LVM logical volume (inside a volume group, on a physical volume) in a VMWare hard disk stored on LVM (logical volume inside volume group of physical volumes) inside a disk image that is itself a file on a disk. How very convoluted. (tags: lvm vmware linux sysadmin) [...]

]]> By: Dave http://www.dmi.me.uk/blog/2009/02/22/restoring-from-lvm-and-vmware-disks/comment-page-1/#comment-121 Dave Mon, 09 Mar 2009 17:14:41 +0000 http://www.dmi.me.uk/blog/?p=91#comment-121 Thanks Terry -- glad I could help! Thanks Terry — glad I could help!

]]> By: Terry Stebbens http://www.dmi.me.uk/blog/2009/02/22/restoring-from-lvm-and-vmware-disks/comment-page-1/#comment-120 Terry Stebbens Mon, 09 Mar 2009 15:44:57 +0000 http://www.dmi.me.uk/blog/?p=91#comment-120 You are a life saver! I had nearly given myself a brain tumour trying to work this out on some Xen virtual machines and ended up giving up and using straight partitions instead. Now I can go back to using LVMs and all the benefits they provide. Cheers! You are a life saver! I had nearly given myself a brain tumour trying to work this out on some Xen virtual machines and ended up giving up and using straight partitions instead. Now I can go back to using LVMs and all the benefits they provide. Cheers!

]]> By: Dave http://www.dmi.me.uk/blog/2009/02/22/restoring-from-lvm-and-vmware-disks/comment-page-1/#comment-118 Dave Wed, 04 Mar 2009 21:08:24 +0000 http://www.dmi.me.uk/blog/?p=91#comment-118 Hi Aziz, Thanks for the comment -- it's always nice to be appreciated :) As far as best practices go, I don't really have any particular advice. It depends on exactly how you have things set up and organised. The way I tend to configure a system is to have one VG for the operating system, with LVs for <strong>/usr</strong>, <strong>/usr/portage</strong> (on Gentoo), <strong>/opt</strong>, <strong>/var</strong>, <strong>/tmp</strong> and then another VG for user data, which might be split into <strong>/home</strong> and <strong>/vol</strong> (generic shared data) and possibly others (like <strong>/var/www</strong> or <strong>/var/lib/mysql</strong>, <strong>/vol/VMs</strong> or <strong>/vol/music</strong>) depending on the machine's purpose. Having said this, there's nothing wrong with having just the one VG, as it provides the most flexibility with your LV partitions. I also hope nobody else gets into a situation where they have to use this, but if they do I hope they find it helpful and realise that all is not lost! Hi Aziz,

Thanks for the comment — it’s always nice to be appreciated :)

As far as best practices go, I don’t really have any particular advice. It depends on exactly how you have things set up and organised.

The way I tend to configure a system is to have one VG for the operating system, with LVs for /usr, /usr/portage (on Gentoo), /opt, /var, /tmp and then another VG for user data, which might be split into /home and /vol (generic shared data) and possibly others (like /var/www or /var/lib/mysql, /vol/VMs or /vol/music) depending on the machine’s purpose.

Having said this, there’s nothing wrong with having just the one VG, as it provides the most flexibility with your LV partitions.

I also hope nobody else gets into a situation where they have to use this, but if they do I hope they find it helpful and realise that all is not lost!

]]> By: Aziz B http://www.dmi.me.uk/blog/2009/02/22/restoring-from-lvm-and-vmware-disks/comment-page-1/#comment-117 Aziz B Wed, 04 Mar 2009 17:06:04 +0000 http://www.dmi.me.uk/blog/?p=91#comment-117 Thanks for this well-written article. In light of what you have discussed, and the experience you have with LVM and VMWARE, do you suggest any best practices, as far as using LVM in host and guest Linux machines? I have a 4 disk SCSI array, using RAID 5, which is about 400 Gig logical volume, I have partitioned it with LVM, but I am wondering if I need to use one VG or more? Do guest machines need to be on their own VG..etc.. I am still learning about LVM, so any details would be appreciated. Thanks again for the good tips of how to restore a host gone bad, hopefully, I won't have to use them. :) Thanks for this well-written article. In light of what you have discussed, and the experience you have with LVM and VMWARE, do you suggest any best practices, as far as using LVM in host and guest Linux machines?
I have a 4 disk SCSI array, using RAID 5, which is about 400 Gig logical volume, I have partitioned it with LVM, but I am wondering if I need to use one VG or more? Do guest machines need to be on their own VG..etc..
I am still learning about LVM, so any details would be appreciated.
Thanks again for the good tips of how to restore a host gone bad, hopefully, I won’t have to use them. :)

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