Does Qubes boot partition have a record of where other Qubes pools/volunes are stored?

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1

I’m trying to recover data from one of my SSDs. The boot Qubes disk is still OK. It contains partial volunes for everything. Does it also contain a list of the block location of the “missing” partitions / data on the SSD which I have a problem with?

2

qubes-prefs or /etc/fstab may help

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3

My Qubes data uses a logical volume across the two drives (one good, one problem) . I can open the OK SSD’s encrypted LUKS with this:

sudo cryptsetup luksOpen /dev/nvme1n1p6 small6

But I get this error trying to mount it “unknown filesystem type ‘LVM2_member’.” I guess because it is a logical volume and the system wants the rest of the volume on the other drive.

sudo vgdisplay and sudo lvscan both say the logical volumes are inactive because of the missing data on the other drive.

I wonder if I can issue commands which will tell me where Qubes thinks the missing partition on the SSD should be, and perhaps other parameters that would help me to recover it.

sudo vgdisplay
  WARNING: Couldn't find device with uuid 4VL0R0-xnFu-FYgn-rfDt-Ntzy-chWu-E2Y9Q1.
  WARNING: VG qubes_dom0 is missing PV 4VL0R0-xnFu-FYgn-rfDt-Ntzy-chWu-E2Y9Q1 (last written to /dev/mapper/luks-06277963-a537-4c7e-a81e-8c114b7854ef).
  --- Volume group ---
  VG Name               qubes_dom0
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  157991
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                169
  Open LV               0
  Max PV                0
  Cur PV                2
  Act PV                1
  VG Size               <313.59 GiB
  PE Size               4.00 MiB
  Total PE              80279
  Alloc PE / Size       64223 / 250.87 GiB
  Free  PE / Size       16056 / <62.72 GiB
  VG UUID               XTvHu6-sGuM-x0SZ-4foo-37ow-KhvH-FvhXtd








Can I issue command

sudo vgdisplay
  WARNING: Couldn't find device with uuid 4VL0R0-xnFu-FYgn-rfDt-Ntzy-chWu-E2Y9Q1.
  WARNING: VG qubes_dom0 is missing PV 4VL0R0-xnFu-FYgn-rfDt-Ntzy-chWu-E2Y9Q1 (last written to /dev/mapper/luks-06277963-a537-4c7e-a81e-8c114b7854ef).
4

open both drive and run vgchange -ay then mount your lv

5

The other drive got formatted but the data is seemingly there. That is why I am trying to find out where partitions are.

6

ah, try check in /var/log/anaconda/storage.log
but since you cannot mount your root partition, i dont have idea.

but try opening the drive that working and run vgchange -ay and mount it, it may work

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7

ACTIVE ‘/dev/qubes_dom0/swap’ [<7.29 GiB] inherit

The others say:

Refusing activation of partial LV qubes_dom0/root. Use ‘–activationmode partial’ to override.

Will it be destructive if I try to open any of those that refused? What do I want, root, or something else?

8

its recommended that you have backup first, then you can partially active the root, the log is inside root.

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