openmediavault-backup 6.0.7 plugin

helzayat · 13. September 2022

I installed the openmediavault-backup 6.0.7 plugin. However when I start a backup, it seems to be backing up the entire drive, not just the system partition.

My system partition is 6GB with another partition on the 4TB drive containing the data, but the backup file had reached 45GB before I interrupted the backup by rebooting.
There must be something I am not seeing about selecting what to backup.

ryecoaaron · 13. September 2022

Did you choose ddfull? Kind of hard to help without knowing how you set it up.

helzayat · 13. September 2022

No, just dd. Screenshot of settings attached.

ryecoaaron · 13. September 2022

dd will only back the os partition and possibly the uefi partition. Output when running a manual backup would help. So would the output of: sudo fdisk -l

helzayat · 14. September 2022

Code

Disk /dev/sda: 3.64 TiB, 4000787030016 bytes, 7814037168 sectors
Disk model: WDC WD40EFRX-68N
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: gpt
Disk identifier: EB5A8700-53A9-4F34-B506-A050B12EA90F

Device        Start        End    Sectors  Size Type
/dev/sda1      2048   15097855   15095808  7.2G Linux filesystem
/dev/sda2  15097856   16777215    1679360  820M Linux swap
/dev/sda3  16777216 7814037134 7797259919  3.6T Linux filesystem

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But the data partition /dev/sda3 is mounted by fstab:

Code

/dev/disk/by-uuid/e3e9800d-bfe5-464b-8eb5-09ada3b35739          /srv/dev-disk-by-uuid-e3e9800d-bfe5-464b-8eb5-09ada3b35739      ext4    defaults,nofail,user_xattr,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0,acl 0 2

so it seems that the backup includes /srv and its subfolders? Did I do something wrong when creating a share on /sda3 ?

ryecoaaron · 14. September 2022

Zitat von helzayat

so it seems that the backup includes /srv and its subfolders?

Nope. https://github.com/OpenMediaVa…/usr/sbin/omv-backup#L130 The beginning output of a manual run of the backup would really help show what is going on.

helzayat · 14. September 2022

I'm not sure what you mean by "The beginning output of a manual run"

ryecoaaron · 14. September 2022

Zitat von helzayat

I'm not sure what you mean by "The beginning output of a manual run

That was what I needed. Notice how it says the device file is /dev/sda1? That is what it backs up - that partition. The same variable that outputs that display line is what gets backed up by the line I linked to above.

helzayat · 14. September 2022

So that would resolve to:

Code

 dd if=/dev/sda1 bs=1M conv=sync,noerror status=progress | gzip -c > /srv/dev-disk-by-uuid-e3e9800d-bfe5-464b-8eb5-09ada3b35739Public/omvbackup/backup-omv-2022-09-14_00-59-07.espdd.gz

right?

Then why is the backup-omv*.gz file growing past the size of /sda1?

ryecoaaron · 14. September 2022

Zitat von helzayat

Then why is the backup-omv*.gz file growing past the size of /sda1?

Not sure. Shouldn't be possible. Are you sure you didn't read a number wrong?

helzayat · 14. September 2022

Code

# du -sh /srv/dev-disk-by-uuid-e3e9800d-bfe5-464b-8eb5-09ada3b35739/Public/omvbackup
13G     /srv/dev-disk-by-uuid-e3e9800d-bfe5-464b-8eb5-09ada3b35739/Public/omvbackup

# ls -la /srv/dev-disk-by-uuid-e3e9800d-bfe5-464b-8eb5-09ada3b35739/Public/omvbackup
total 12634576
drwxrwsrwx+ 2 root users        4096 Sep 14 00:59 .
drwxrwsrwx+ 4 root users        4096 Sep 14 00:59 ..
-rw-rw-rw-+ 1 root users         981 Sep 14 00:59 backup-omv-2022-09-14_00-59-07.blkid
-rw-rw-rw-+ 1 root users 12937773056 Sep 14 01:13 backup-omv-2022-09-14_00-59-07.espdd.gz
-rw-rw-rw-+ 1 root users         556 Sep 14 00:59 backup-omv-2022-09-14_00-59-07.fdisk
-rw-rw-rw-+ 1 root users         882 Sep 14 00:59 backup-omv-2022-09-14_00-59-07.packages

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and it just keeps growing

ryecoaaron · 14. September 2022

Zitat von helzayat

backup-omv-2022-09-14_00-59-07.espdd.gz

Notice the esp part of the filename? Evidently your system is uefi and the plugin is determining the wrong partition for the esp partition. What is the output of: grep -w /boot /proc/mounts | awk '{ print $1 }'

helzayat · 14. September 2022

Zitat

the plugin is determining the wrong partition for the esp partition

That's right. grep -w /boot /proc/mounts | awk '{ print $1 }' returns /dev/nvme0n1p2 which is my Windows drive.
I have Windows on one drive (NVMe) and OMV/Debian on another (SATA HDD).

ryecoaaron · 14. September 2022

While I don't understand why you would dual boot windows on a nas that is meant to be headless, I really don't understand why your windows partition is showing up as your /boot device. What is the output of: mount

helzayat · 14. September 2022

Zitat

While I don't understand why you would dual boot windows on a nas

Before I dedicate a machine to OMV, I am familiarizing myself with it. This Windows PC had a 4TB drive that I had just emptied, and so I installed OMV on it and have been getting to know the system. Eventually OMV will be on its own headless system. I also have OMV on my Western Digital My Cloud Home, but it's Arrakis so I will be updating that soon.

The line from mount that I guess you're looking for is /dev/nvme0n1p2 on /boot/efi type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro)

That's the EFI partition on the Windows disk.

helzayat · 14. September 2022

Here's the rest of the output of mount:

Code

sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs (rw,nosuid,relatime,size=18411396k,nr_inodes=4602849,mode=755)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,nodev,noexec,relatime,size=3687560k,mode=755)
/dev/sda1 on / type ext4 (rw,relatime,errors=remount-ro)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
cgroup2 on /sys/fs/cgroup type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate,memory_recursiveprot)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,nosuid,nodev,noexec,relatime)
none on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=30,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=23581)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,nosuid,nodev,noexec,relatime)
configfs on /sys/kernel/config type configfs (rw,nosuid,nodev,noexec,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
tracefs on /sys/kernel/tracing type tracefs (rw,nosuid,nodev,noexec,relatime)
sunrpc on /run/rpc_pipefs type rpc_pipefs (rw,relatime)
/dev/nvme0n1p2 on /boot/efi type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro)
tmpfs on /tmp type tmpfs (rw,relatime)
/dev/sda3 on /srv/dev-disk-by-uuid-e3e9800d-bfe5-464b-8eb5-09ada3b35739 type ext4 (rw,relatime,jqfmt=vfsv0,usrjquota=aquota.user,grpjquota=aquota.group)

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ryecoaaron · 14. September 2022

Zitat von helzayat

The line from mount that I guess you're looking for is

Yep. The plugin doesn't accommodate for dual boot systems evidently. Can you confirm that the following command gives no output:
awk '$2 == "/boot" { print $1 }' /proc/mounts

helzayat · 14. September 2022

Zitat

Can you confirm that the following command gives no output:

awk '$2 == "/boot" { print $1 }' /proc/mounts

Yes, no output.

ryecoaaron · 14. September 2022

Zitat von helzayat

Yes, no output.

I will push the change in a bit.

helzayat · 14. September 2022

As a temporary fix for my case, I commented out the lines dd-ing esppart and bootpart (which were /dev/sda and /dev/nvmeon1p2 respectively).

Only root (/dev/sda1) was copied and I able to get a backup using the plugin.
I added some output before each 'dd', here is the result:

Code

Starting backup ...
Method: dd
Device file:  /dev/sda1
Root drive: /dev/sda
Would have copied esppart ('/dev/sda').
Copying root ('/dev/sda'). bs=446.
1+0 records in
1+0 records out
446 bytes copied, 0.000179762 s, 2.5 MB/s
Copying root ('/dev/sda'). bs='1408'.
1+0 records in
1+0 records out
1408 bytes (1.4 kB, 1.4 KiB) copied, 0.000161744 s, 8.7 MB/s
Boot drive: /dev/nvme0n1p2
Using dd...
Copying devicefile ('/dev/sda1').

60817408 bytes (61 MB, 58 MiB) copied, 1 s, 60.5 MB/s

...

7371+0 records in
7371+0 records out
7729053696 bytes (7.7 GB, 7.2 GiB) copied, 376.276 s, 20.5 MB/s
Would have copied bootpart ('/dev/nvme0n1p2').
Purging old files...
Purging done.

END OF LINE

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openmediavault-backup 6.0.7 plugin

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