rear/rear

Relax-and-Recover - Linux bare metal disaster recovery and system migration solution (cfr. mksysb, ignite)

Jesus Reyna

@jgreyna_twitter

OUTPUT=ISO
BACKUP=NBU

when I run the command rear -d mkbackup it does not give me any error

[root@monitor rear]# rear -d mkbackup
Relax-and-Recover 1.17.2 / Git
Using log file: /var/log/rear/rear-monitor.log
Creating disk layout
Creating root filesystem layout
/etc/init.d/netbackup' ->/tmp/rear.ySbhEFiBjmUj4h7/rootfs/etc/scripts/system-setup.d/90-netbackup.sh'
mode of `/tmp/rear.ySbhEFiBjmUj4h7/rootfs/etc/scripts/system-setup.d/90-netbackup.sh' changed to 0511 (r-x--x--x)
TIP: To login as root via ssh you need to set up /root/.ssh/authorized_keys or SSH_ROOT_PASSWORD in your configuration file
Copying files and directories
Copying binaries and libraries
Copying kernel modules
Creating initramfs
Making ISO image
Wrote ISO image: /var/lib/rear/output/rear-monitor.iso (362M)
You should also rm -Rf /tmp/rear.ySbhEFiBjmUj4h7

But in Netbacup console I can not see any activity job of backup, I think I'm missing something, can you give me some orientation.

Environment:
Linux: RHEL 6.5
Rear: 1.17.2
NBU: 8

Gratien D'haese

@gdha

@jgreyna_twitter That is normal. BACKUP=NBU expects that you have a full backup of your client already made (manually before, or automatic like every week)

Jesus Reyna

@jgreyna_twitter

oh, I though it send the backup to NBU

got it

what is the recommended schedule for the full backup?

Jesus Reyna

@jgreyna_twitter

Hello again folks!

I have now another issue, after I made a backup, I tried to boot the generated .iso file on a VM, but it stuck during boot time

it looks like a kernel panic during boot time, after the line child_rip+0x0/0x20 nothing happened

Jesus Reyna

@jgreyna_twitter

this is only a POC, I'm recovering from a Linux Red Hat 6.5 on a PC Dell OptiPlex 3020 to a VirtualBox VM, I know it a drastically hardware change and maybe this is why I'm getting the error.

any idea?

Lars E. D. Jensen

@ledj_twitter

is it recommended to use BLOCKCLONE_PROG when dealing with a large amount of files? I have a server with 200GB small mail files that I imagine would take a long time to mkbackup of when using tar.

Vladimir Gozora

@gozora

@ledj_twitter are you really using BACKUP=BLOCKCLONE ? Because BLOCKCLONE_PROG is relevant ONLY for this backup method ...

Lars E. D. Jensen

@ledj_twitter

@gozora yes I'm aware, but I'm asking if using BLOCKCLONE and _PROG (dd in my case) are recommended over tar when 200 GB small files are on a partition?

Vladimir Gozora

@gozora

@ledj_twitter if you are using BLOCKCLONE with dd it doesn't really matter how much files you have on your filesystem, because dd will clone your whole partition / disk ...

Lars E. D. Jensen

@ledj_twitter

@gozora I imagine that, but doing a tar or rsync on 200 GB small files would take a long time, so BLOCKCLONE seems the way to go

Swapnil Mengi

@swapnil_mengi_twitter

Hi, I need some help with ReaR, when working with VM it works just fine but when I use it for physical systems backup and recovery the backup is successfully taken but when I write the ISO to the pendrive and boot from it, the system instead boots from the harddrive not the pendrive

Swapnil Mengi

@swapnil_mengi_twitter

Can someone help me with it ? not able to boot a physical system from the backup iso
config:
OUTPUT=ISO
BACKUP_URL=file:///rear_backup

phswartz

@phswartz_twitter

Hello All.. new to ReaR and this chat ... I'm trying to install on SLE-15, but the rpm seems to have a dependency of genisoimage, which isn't part of SLE-15. Instead the OS provides mkisofs, but I can't get around the genisoimage dependency.

phswartz

@phswartz_twitter

found a work around for SLE-15 ... version 2.3 is included in the High Availability Extensions module

James Davis

@mystic1muse_twitter

I installed REAR on Peppermint Linux and it did got error on install, no icon and could not run. So tried to uninstall and got error. Tried to uninstall with the sudo command and it would not, so I have a failed install that I can not uninstall. Would not uninstall from Software Manager either. What is a fullproof way to uninstall it?

Gratien D'haese

@gdha

@mystic1muse_twitter as peppermint is based on Debian you could try to remove rear from the command line 'apt-get remove -y rear'

James Davis

@mystic1muse_twitter

So the command would be what exactly?

apt-get remove -y rear did not work.

Michael

@micoots_twitter

Hi.. I'd just like to say on this page:

http://relax-and-recover.org/documentation/

"Frequentally asked questions" should read "Frequently Asked Questions"

not sure where to report that but thought I'd report here

as an FYI.. I tried to use REAR for the purposes of backing up instances, a DR, in Oracle Cloud.. I successfully created ISO etc.. but Oracle Cloud doesn't really have any way to boot an ISO.. from everything I've read it only does boot volume backups, and block device images.. with the ability to have custom images (qcow2 and vmdk supported only).. really bad in my opinion as REAR is quite good.. but unfortunately I can't really find any way to make it work with Oracle Cloud instances..

Biggen

@Biggen_PCB_twitter

How does rear handle backing up a linux box that is running as a KVM host? So multiple VM's are running while the backup kicks off?

MichaelAronsen

@MichaelAronsen

is there a checklist for things to check when you get errors that nothing is mounted on /mnt/local?

MichaelAronsen

@MichaelAronsen

what would cause fs lines to be missing in the layout? partitions are there, but root filesystem is not recreated

amiirrmm

@amiirrmm

@Biggen_PCB_twitter Hi. I have the same question too. Have you ever tired backing up a system while it is running huge MySQL/PGSGL databases? I wanted to know that if it could handle and guarantee the safety of open files while they are running...

Christoph Haas

@Signum

@amiirrmm Yes, that's possible. Just make sure that you backup a snapshot of the data directory (e.g. /var/lib/postgresql) and not the live datadir. I use LVM snapshots for that purpose.

Does anyone have an idea why booting the ISO doesn't get me an IP address on the recovery system through DHCP? Remapping network interface worked but DHCP fails.

Greg Kennedy

@gk1

I have a weird issue. I made a backup of a machine, and the diskrecover.sh is empty/default, i made a backup of an almost identical machine and it is able to recover just fine. I noticed that the boot isos for the pair of machines differ by almost 40mb, they are basically clones of each other so im not sure why the difference. Any help in pointing me to the right place to look for errors is appreciated.

towster

@towster

Trying to recover a machine - i get disk configuration looks identical / Start system layout restoration / Disk layout created / ERROR: No filesystem mounted on '/mnt/local'. Stopping

Ruslan

@impkos_twitter

Good day, everyone! Tell me, can I find out in advance what will be the weight of my .iso system image? To eliminate the lack of space.

can somehow emulate the backup process in order to know in advance how much space the iso file will weigh?

dhlfs

@dhlfs

Good day! Can ReaR backup folder structure of mount point without files in folders?

Jason Hurd

@jasonhurd

Hello All, I have three installations of Ubuntu 16.04.5 LTS and only one of them shows rear available for installation in APT. And the one installation that it does show, only has version 2.00 available. Any ideas?

nadloga

@Pintar_gitlab

Hi guys, one stupid question but, i am able to recover my system to /mnt/local but what next. Documentation states that after reboot VM will be fine. But FileSystem mounted from /mnt/local isnt copied to /. How can i achieve this? Thnx

Dorothea Muecke-Herzberg

@domuhe

Hello All, I have trouble recovering an Ubuntu 18.04 backup to a smaller disk on a different hardware. The original system is on a RAID (3TB) and the restore system is just a single drive 2(TB). The Backup is just 70GB. But recover complains that the last partition has to be shrunk more than 2%. How can I address that?

chumunga

@chumunga

Hi All, been testing ReaR for about a week now, I notice incremental backups doesn't work when BACKUP_URL=file:/// (in my case to an FSTAB mount), but when BACKUP_URL=CIFS:// works just fine, is this a known limitation?

chumunga

@chumunga

In case someone else has the same question rear/rear#1146 I guess BACKUP_URL=file:/// is the same as USB

Dan

@Dan75060179_twitter

Does anyone know if Relax-And-Recover will work under LinuxMint 17.1 ?

chumunga

@chumunga

would anyone know if possible or how to backup mount point? like a mounted nas

Eason Family

@tomlauri_twitter

Have a couple suggestions for the next REAR release: would like to see if the "lsblk" command could be added to the rear recovery; also can we get UDF, NFS, and USB_STORAGE modules loaded automatically? Currently I have to make sure I modprobe them before making a backup as well as having to add lsblk to /usr/bin in order to see if my USB device mountable, and in order to add the file, I have to mount a cdrom using modprobe udf. One last request is to see if ntfs-3g can be added as well, this would help to read a DVD that was created in Windows.

Eason Family

@tomlauri_twitter

An additional request; I would also like the ISO image to be created during a backup using OUTPUT=USB... (just incase I would need to create a bootable CD to do a recovery). Right now I can either have the ISO created as part of the backup, or have a bootable USB device, but not both.

Eason Family

@tomlauri_twitter

I would like to add /usr/bin/ntfs-3g to my mkrescue image... how do I add that to the local.conf file so I can ntfs-3g mount my external hard drive?

Eason Family

@tomlauri_twitter

Never mind all my questions above; I have figured it out on my own. I now can make a USB device, with ISO included in the backup, and can mount my "windows" external hard drive using ntfs-3g during rear recovery.

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