Short of backing up entire disks using dd, I'd like to collect all required information to make sure I can restore partitions, disk information, UUIDs and anything else required in the event of losing a disk. So far I am collecting information from: - fdisk -l - blkid - lsblk - grub2-efi.cfg - grub - fstab Hoping that this would supply me with /all/ information to restore a system - with the exception of installed operating system, apps and data. I would appreciate any and all thoughts on the above!
Chris Schanzle
2020-Nov-17 17:23 UTC
[CentOS] Best practice preparing for disk restoring system
I would include LVM and mdadm info as well, since I use those features.? I encourage you to look at what long-lived tools, such as clonezilla, write into their archive directories.? It's impressive. If you zero out all free space on all of your HDD partitions (dd bs=1M if=/dev/zero of=/path/deleteme; rm /path/deleteme) or use 'fstrim' for SSD's, you could use dd to image with fast & light compression (lzop or my current favorite, pzstd) and get maximum benefit of a bit-by-bit archival copy. On 11/16/20 11:02 PM, H wrote:> Short of backing up entire disks using dd, I'd like to collect all required information to make sure I can restore partitions, disk information, UUIDs and anything else required in the event of losing a disk. > > So far I am collecting information from: > - fdisk -l > - blkid > - lsblk > - grub2-efi.cfg > - grub > - fstab > > Hoping that this would supply me with /all/ information to restore a system - with the exception of installed operating system, apps and data. > > I would appreciate any and all thoughts on the above! > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos
Felix Kölzow
2020-Nov-17 21:07 UTC
[CentOS] Best practice preparing for disk restoring system
Maybe "rear" is an appropriate solution for you? https://relax-and-recover.org/ On 17/11/2020 18:23, Chris Schanzle via CentOS wrote:> I would include LVM and mdadm info as well, since I use those features.? I encourage you to look at what long-lived tools, such as clonezilla, write into their archive directories.? It's impressive. > > If you zero out all free space on all of your HDD partitions (dd bs=1M if=/dev/zero of=/path/deleteme; rm /path/deleteme) or use 'fstrim' for SSD's, you could use dd to image with fast & light compression (lzop or my current favorite, pzstd) and get maximum benefit of a bit-by-bit archival copy. > > > On 11/16/20 11:02 PM, H wrote: >> Short of backing up entire disks using dd, I'd like to collect all required information to make sure I can restore partitions, disk information, UUIDs and anything else required in the event of losing a disk. >> >> So far I am collecting information from: >> - fdisk -l >> - blkid >> - lsblk >> - grub2-efi.cfg >> - grub >> - fstab >> >> Hoping that this would supply me with /all/ information to restore a system - with the exception of installed operating system, apps and data. >> >> I would appreciate any and all thoughts on the above! >> _______________________________________________ >> CentOS mailing list >> CentOS at centos.org >> https://lists.centos.org/mailman/listinfo/centos > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos