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How do I change disk ?

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  How do I change disk ? Pierre Couderc <pierre@couderc.eu> - 2022-01-11 04:50 +0100
    Re: How do I change disk ? Hans <hans.ullrich@loop.de> - 2022-01-11 11:30 +0100
      Re: How do I change disk ? Pierre Couderc <pierre@couderc.eu> - 2022-01-11 17:30 +0100
        Re: How do I change disk ? Hans <hans.ullrich@loop.de> - 2022-01-11 20:10 +0100
          Re: How do I change disk ? Pierre Couderc <pierre@couderc.eu> - 2022-01-12 10:50 +0100
        Re: How do I change disk ? Andrei POPESCU <andreimpopescu@gmail.com> - 2022-01-15 20:20 +0100

#243852 — How do I change disk ?

I have a btrfs RAID1 system. I did install it with /dev/sda disk (efs on 
sda1, btrfs on sda2). Then, after install,  I added  a sdb disk (vfat on 
sdb1, btrfs on sdb2) and I did  btrfs balance.

As /dev/sda is now old, I want to change it. I know btrfs procedures but 
I do not know grub procedures.

I suppose I should install "some grub thing" on sdb1 and inform the 
system to boot on sdb1. How to do that ?

Is there a good tutorial that I have not found ?

Is it possible to have a system booting automatically on sdb1 if sda1 
fails ?

In fact I did add later an identical sdc disk...

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#243853

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Am Dienstag, 11. Januar 2022, 04:38:36 CET schrieb Pierre Couderc:
My way:

- Boot with a live cd with clonezilla on it (i.e. clonezilla live)

- clone the complete harddrive to the new one. Pay attentention, that the new one must be 
equal or bigger than the source.

- Use another live cd with gparted on it and move or resize the partitions.


--------------------

Second way (more work and more complicated):

- Boot with a linux live system (debian live, Knoppix whatever)

- mount the old one to a new mountpoint in root, like /disk1

- partition the new drive to your needs manually

- mount the new one to a new mountpoint in root, like /disk2

- use rsync for transferring data to the new one

- reboot to your old system with the connected new harddrive

- install grub on the new harddrive (grub --install /dev/sdb or update-grub might do it)


--------------------

Have fun


Best 

Hans
> I have a btrfs RAID1 system. I did install it with /dev/sda disk (efs on
> sda1, btrfs on sda2). Then, after install,  I added  a sdb disk (vfat on
> sdb1, btrfs on sdb2) and I did  btrfs balance.
> 
> As /dev/sda is now old, I want to change it. I know btrfs procedures but
> I do not know grub procedures.
> 
> I suppose I should install "some grub thing" on sdb1 and inform the
> system to boot on sdb1. How to do that ?
> 
> Is there a good tutorial that I have not found ?
> 
> Is it possible to have a system booting automatically on sdb1 if sda1
> fails ?
> 
> In fact I did add later an identical sdc disk...

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#243870

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Thank you. I am surprised;  update-grub is enough to install grub 
correctly on all drives...??


On 1/11/22 11:24, Hans wrote:
>
> Am Dienstag, 11. Januar 2022, 04:38:36 CET schrieb Pierre Couderc:
>
> My way:
>
>
> - Boot with a live cd with clonezilla on it (i.e. clonezilla live)
>
>
> - clone the complete harddrive to the new one. Pay attentention, that 
> the new one must be equal or bigger than the source.
>
>
> - Use another live cd with gparted on it and move or resize the 
> partitions.
>
>
>
> ------------------------------------------------------------------------
>
> Second way (more work and more complicated):
>
>
> - Boot with a linux live system (debian live, Knoppix whatever)
>
>
> - mount the old one to a new mountpoint in root, like /disk1
>
>
> - partition the new drive to your needs manually
>
>
> - mount the new one to a new mountpoint in root, like /disk2
>
>
> - use rsync for transferring data to the new one
>
>
> - reboot to your old system with the connected new harddrive
>
>
> - install grub on the new harddrive (grub --install /dev/sdb or 
> update-grub might do it)
>
>
>
> ------------------------------------------------------------------------
>
> Have fun
>
>
>
> Best
>
>
> Hans
>
> > I have a btrfs RAID1 system. I did install it with /dev/sda disk (efs on
>
> > sda1, btrfs on sda2). Then, after install,  I added  a sdb disk (vfat on
>
> > sdb1, btrfs on sdb2) and I did  btrfs balance.
>
> >
>
> > As /dev/sda is now old, I want to change it. I know btrfs procedures but
>
> > I do not know grub procedures.
>
> >
>
> > I suppose I should install "some grub thing" on sdb1 and inform the
>
> > system to boot on sdb1. How to do that ?
>
> >
>
> > Is there a good tutorial that I have not found ?
>
> >
>
> > Is it possible to have a system booting automatically on sdb1 if sda1
>
> > fails ?
>
> >
>
> > In fact I did add later an identical sdc disk...
>
>
>

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#243884

Am Dienstag, 11. Januar 2022, 17:22:08 CET schrieb Pierre Couderc:
Yes, should be so by default.

Good luck!

Hans
> Thank you. I am surprised;  update-grub is enough to install grub
> correctly on all drives...??
> 
> On 1/11/22 11:24, Hans wrote:
> > Am Dienstag, 11. Januar 2022, 04:38:36 CET schrieb Pierre Couderc:
> > 
> > My way:
> > 
> > 
> > - Boot with a live cd with clonezilla on it (i.e. clonezilla live)
> > 
> > 
> > - clone the complete harddrive to the new one. Pay attentention, that
> > the new one must be equal or bigger than the source.
> > 
> > 
> > - Use another live cd with gparted on it and move or resize the
> > partitions.
> > 
> > 
> > 
> > ------------------------------------------------------------------------
> > 
> > Second way (more work and more complicated):
> > 
> > 
> > - Boot with a linux live system (debian live, Knoppix whatever)
> > 
> > 
> > - mount the old one to a new mountpoint in root, like /disk1
> > 
> > 
> > - partition the new drive to your needs manually
> > 
> > 
> > - mount the new one to a new mountpoint in root, like /disk2
> > 
> > 
> > - use rsync for transferring data to the new one
> > 
> > 
> > - reboot to your old system with the connected new harddrive
> > 
> > 
> > - install grub on the new harddrive (grub --install /dev/sdb or
> > update-grub might do it)
> > 
> > 
> > 
> > ------------------------------------------------------------------------
> > 
> > Have fun
> > 
> > 
> > 
> > Best
> > 
> > 
> > Hans
> > 
> > > I have a btrfs RAID1 system. I did install it with /dev/sda disk (efs on
> > > 
> > > sda1, btrfs on sda2). Then, after install,  I added  a sdb disk (vfat on
> > > 
> > > sdb1, btrfs on sdb2) and I did  btrfs balance.
> > > 
> > > 
> > > 
> > > As /dev/sda is now old, I want to change it. I know btrfs procedures but
> > > 
> > > I do not know grub procedures.
> > > 
> > > 
> > > 
> > > I suppose I should install "some grub thing" on sdb1 and inform the
> > > 
> > > system to boot on sdb1. How to do that ?
> > > 
> > > 
> > > 
> > > Is there a good tutorial that I have not found ?
> > > 
> > > 
> > > 
> > > Is it possible to have a system booting automatically on sdb1 if sda1
> > > 
> > > fails ?
> > > 
> > > 
> > > 
> > > In fact I did add later an identical sdc disk...

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#243910

Sorry to insist... but even for  btrfs RAID1 disks of différent size ?

OK, I shall try but I am surprised it is so simple... ;)


On 1/11/22 20:01, Hans wrote:
> Am Dienstag, 11. Januar 2022, 17:22:08 CET schrieb Pierre Couderc:
> Yes, should be so by default.
>
> Good luck!
>
> Hans
>> Thank you. I am surprised;  update-grub is enough to install grub
>> correctly on all drives...??
>>
>> On 1/11/22 11:24, Hans wrote:
>>> Am Dienstag, 11. Januar 2022, 04:38:36 CET schrieb Pierre Couderc:
>>>
>>> My way:
>>>
>>>
>>> - Boot with a live cd with clonezilla on it (i.e. clonezilla live)
>>>
>>>
>>> - clone the complete harddrive to the new one. Pay attentention, that
>>> the new one must be equal or bigger than the source.
>>>
>>>
>>> - Use another live cd with gparted on it and move or resize the
>>> partitions.
>>>
>>>
>>>
>>> ------------------------------------------------------------------------
>>>
>>> Second way (more work and more complicated):
>>>
>>>
>>> - Boot with a linux live system (debian live, Knoppix whatever)
>>>
>>>
>>> - mount the old one to a new mountpoint in root, like /disk1
>>>
>>>
>>> - partition the new drive to your needs manually
>>>
>>>
>>> - mount the new one to a new mountpoint in root, like /disk2
>>>
>>>
>>> - use rsync for transferring data to the new one
>>>
>>>
>>> - reboot to your old system with the connected new harddrive
>>>
>>>
>>> - install grub on the new harddrive (grub --install /dev/sdb or
>>> update-grub might do it)
>>>
>>>
>>>
>>> ------------------------------------------------------------------------
>>>
>>> Have fun
>>>
>>>
>>>
>>> Best
>>>
>>>
>>> Hans
>>>
>>>> I have a btrfs RAID1 system. I did install it with /dev/sda disk (efs on
>>>>
>>>> sda1, btrfs on sda2). Then, after install,  I added  a sdb disk (vfat on
>>>>
>>>> sdb1, btrfs on sdb2) and I did  btrfs balance.
>>>>
>>>>
>>>>
>>>> As /dev/sda is now old, I want to change it. I know btrfs procedures but
>>>>
>>>> I do not know grub procedures.
>>>>
>>>>
>>>>
>>>> I suppose I should install "some grub thing" on sdb1 and inform the
>>>>
>>>> system to boot on sdb1. How to do that ?
>>>>
>>>>
>>>>
>>>> Is there a good tutorial that I have not found ?
>>>>
>>>>
>>>>
>>>> Is it possible to have a system booting automatically on sdb1 if sda1
>>>>
>>>> fails ?
>>>>
>>>>
>>>>
>>>> In fact I did add later an identical sdc disk...
>
>
>

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#244026

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On Ma, 11 ian 22, 17:22:08, Pierre Couderc wrote:
> Thank you. I am surprised;  update-grub is enough to install grub correctly
> on all drives...??
 
No, 'update-grub' is only used to update /boot/grub/grub.cfg.
 
> > - install grub on the new harddrive (grub --install /dev/sdb or
> > update-grub might do it)

You will need 'grub-install /dev/sdb' or something like that, though you 
might need to run 'update-grub' afterwards.

Kind regards,
Andrei
-- 
http://wiki.debian.org/FAQsFromDebianUser

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