In data venerdì 19 luglio 2019 10:18:55 CEST, jdd@dodin.org ha scritto:
Le 19/07/2019 à 10:06, stakanov a écrit :
Scope: I have two discs with 4 TB. One is used as home. I wish to run home on a RAID1. But I have no means to do a backup of all data.
very bad idea. your home content is probably not 4Tb (else the disk would be too small), so backup it *first*
a raid, any raid, is no backup at all. Even, make *two* backups if you home content is of any matter for you!
then back to raid.
is a similar situation, I used btrfs capacity of running self raid live. I know you may dislike btrfs, but in this situation it's a life saver (think of a disk getting bad). AFAIK you can convert ext4 to btrfs (but not the other way round)
I could even *move* a root partition to a other disk using this.
Basically, starting with a btrfs partition, you can *add* any other partition to the old one (aka give more room to data), then balance the data
official info here:
https://btrfs.wiki.kernel.org/index.php/Using_Btrfs_with_Multiple_Devices#Ad ding_new_devices
jdd Uh, RAID and btrfs .... I have some experience with xfs, with ext4 but the ones I have with btrfs are, if not to say negative, a bit "mitigated". I would in all cases prefer ext4. Now the fact of the backup, I have 750 GB free on the /home The 4 GB new will be in RAID 1 I do not own any disk large enough to backup all data. Only one user is backed up with really important data. The rest shall benefit from a higher security in case of hardware failure.
So the issue is: why the f. mdadm gives "option -t not valid in create mode". Provided that the command reported originally, is all in one line, and should work. So what does not work here? Of course I can try to do three backup disks with several users spread everywhere .... not very reliable either. _________________________________________________________________ ________________________________________________________ Ihre E-Mail-Postfächer sicher & zentral an einem Ort. Jetzt wechseln und alte E-Mail-Adresse mitnehmen! https://www.eclipso.de -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org