Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.debian.user > #188810

Re: Sync two disks and hot swap

Show all headers | View raw

On Thu, Nov 09, 2017 at 10:13:17AM +0100, Dominik George wrote:
>> what is the goal in having an identical copy of the disk?
>
>It's not even so much that.
>
>It's that the person who will be changing the disks will be hardly
>capable of just that, and will not get anything close to root access to
>the machine.
>
>And I am afraid that all that complexity around automounting the
>different filesystems, autounmounting, and automatically ensuring the
>filesystem is clean and unmounted at the time the disk is to be swapped
>could be quite unreliable.

Honestly, it's an easier problem than ensuring that a raid element is 
cleanly unmounted. Historically there have been external drives with 
buttons that could be mapped to events (but I have no idea what's on the 
market right now that might have an addressable button). Otherwise maybe 
allow the user to run "eject /whatever" with sudo, or wrap that in a 
single-function console login or somesuch. Another possibility is to 
wrap the rsync functionality in a mount/unmount cycle, so that the disk 
is always unmounted and ready to go except when actively transferring 
data.

Mike Stone

Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Sync two disks and hot swap Dominik George <nik@naturalnet.de> - 2017-11-08 12:00 +0100
  Re: Sync two disks and hot swap Michael Stone <mstone@debian.org> - 2017-11-08 18:10 +0100
    Re: Sync two disks and hot swap Dominik George <nik@naturalnet.de> - 2017-11-08 20:00 +0100
      Re: Sync two disks and hot swap Michael Stone <mstone@debian.org> - 2017-11-08 20:20 +0100
        Re: Sync two disks and hot swap Dominik George <nik@naturalnet.de> - 2017-11-09 10:20 +0100
          Re: Sync two disks and hot swap Michael Stone <mstone@debian.org> - 2017-11-09 13:40 +0100
            Re: Sync two disks and hot swap David Christensen <dpchrist@holgerdanske.com> - 2017-11-09 20:00 +0100
              Re: Sync two disks and hot swap Michael Stone <mstone@debian.org> - 2017-11-09 20:40 +0100
                Re: Sync two disks and hot swap Curt <curty@free.fr> - 2017-11-10 11:00 +0100
                Re: Sync two disks and hot swap Curt <curty@free.fr> - 2017-11-10 11:10 +0100
  Re: Sync two disks and hot swap David Christensen <dpchrist@holgerdanske.com> - 2017-11-09 00:10 +0100
    Re: Sync two disks and hot swap Bob Weber <bobrweber@gmail.com> - 2017-11-09 02:50 +0100
      Re: Sync two disks and hot swap David Christensen <dpchrist@holgerdanske.com> - 2017-11-09 08:10 +0100
        Re: Sync two disks and hot swap Bob Weber <bobrweber@gmail.com> - 2017-11-09 23:50 +0100
          Re: Sync two disks and hot swap David Christensen <dpchrist@holgerdanske.com> - 2017-11-10 00:10 +0100

csiph-web