Re: [linux-lvm] What is the use of thin snapshots if the external origin cannot be set to writable ?

2020-11-26 Thread Sreyan Chakravarty
On Tue, Nov 24, 2020 at 5:29 PM Sreyan Chakravarty wrote: > Do I have to reinstall my system for thin snapshots ? > > Can't I just clone my filesystem and then create a thin pool ? > >> > > Used partclone to restore my backup. Did not have re-install but did have to delete old volumes. --

Re: [linux-lvm] What is the use of thin snapshots if the external origin cannot be set to writable ?

2020-11-26 Thread Sreyan Chakravarty
On Wed, Nov 25, 2020 at 8:50 PM Bryn M. Reeves wrote: > You can, it's just typically easier for most users to re-install than to > execute the necessary steps to convert the system after the fact. > > If you have sufficient space then you can just create a thin pool, copy > your existing file

Re: [linux-lvm] What is the use of thin snapshots if the external origin cannot be set to writable ?

2020-11-25 Thread Bryn M. Reeves
On Tue, Nov 24, 2020 at 05:29:36PM +0530, Sreyan Chakravarty wrote: > On Mon, Nov 23, 2020 at 6:34 PM Bryn M. Reeves wrote: > > It means re-installing but if the system is set up to use a thin pool > > and thin provisioned logical volumes from the start then you can use > > snapshots without any

Re: [linux-lvm] What is the use of thin snapshots if the external origin cannot be set to writable ?

2020-11-24 Thread Sreyan Chakravarty
On Mon, Nov 23, 2020 at 6:34 PM Bryn M. Reeves wrote: > OK - I understand what's going on in your environment now, thanks! > > Unfortunately it's not possible to have a writable external origin when > using device-mapper thin provisioned snapshots. To be able to write to > the origin while

Re: [linux-lvm] What is the use of thin snapshots if the external origin cannot be set to writable ?

2020-11-23 Thread Bryn M. Reeves
On Sat, Nov 21, 2020 at 08:40:44AM +0530, Sreyan Chakravarty wrote: > I am looking into thin snapshots since the older COW snapshots delay my > boot enormously. > > My normal root fs is on a normal "non-thin" volume. > > So to make a snapshot I have boot into a live cd environment then set my >

Re: [linux-lvm] What is the use of thin snapshots if the external origin cannot be set to writable ?

2020-11-23 Thread Gionatan Danti
Il 2020-11-21 04:10 Sreyan Chakravarty ha scritto: I mean what is the point of creating a snapshot if I can't change my original volume ? Is there some sort of resolution ? External thin snapshot are useful to share a common, read-only base (ie: a "gold-master" image) with different writable

[linux-lvm] What is the use of thin snapshots if the external origin cannot be set to writable ?

2020-11-23 Thread Sreyan Chakravarty
I am looking into thin snapshots since the older COW snapshots delay my boot enormously. My normal root fs is on a normal "non-thin" volume. So to make a snapshot I have boot into a live cd environment then set my root fs volume to read-only and then set it to inactive. Commands: sudo