[PVE-User] PVE 5.4 - resize a NFS disk truncated it

[Gianni Milo]

Have you tried booting from a recovery media, then first check reported
size within fdisk, then after try to fsck the disk (this may lead to some
data loss by itself) ? Is the drive/partition mountable at all? If not,
then you may have to try repairing its qcow2/raw file. There are some
guides on the internet describing that, however there are no guarantees for
the results.

G.

On Tue, 28 Jan 2020 at 08:27, Eneko Lacunza <elacunza at binovo.es> wrote:

> Hi all,
>
> We have a PVE 5.4 cluster (details below), with a Synology DS1819+ NFS
> server for storing file backups.
>
> The setup is as follows:
>
> - Debian 9 VM with 2 disks; system disk con Ceph RBD, file backup data
> disk on NFS (6,5TB)
> - NFS storage on Synology NAS.
>
> Backup disk was getting full, so we issued a resize disk from web GUI,
> with a 500GB size increment.
>
> GUI reported timeout with 500 error. After that, disk was shown
> incremented at VM hardware view, but storage showed the disk having
> 500GB. VM showed the block device having 500GB (partiton was 6,5TB yet).
>
> We have tried incrementing the disk back to 7TB, but disk/partition is
> corrupt (It was a bad idea, but its too late now).
>
> Any idea to recover lost data on NFS server? :)
>
> We have done this operation hundreds of times without issues, has anyone
> had such a catastrophic experience?
>
> # pveversion -v
> proxmox-ve: 5.4-1 (running kernel: 4.15.18-12-pve)
> pve-manager: 5.4-3 (running version: 5.4-3/0a6eaa62)
> pve-kernel-4.15: 5.3-3
> pve-kernel-4.15.18-12-pve: 4.15.18-35
> pve-kernel-4.15.18-7-pve: 4.15.18-27
> pve-kernel-4.4.134-1-pve: 4.4.134-112
> ceph: 12.2.11-pve1
> corosync: 2.4.4-pve1
> criu: 2.11.1-1~bpo90
> glusterfs-client: 3.8.8-1
> ksm-control-daemon: 1.2-2
> libjs-extjs: 6.0.1-2
> libpve-access-control: 5.1-8
> libpve-apiclient-perl: 2.0-5
> libpve-common-perl: 5.0-50
> libpve-guest-common-perl: 2.0-20
> libpve-http-server-perl: 2.0-13
> libpve-storage-perl: 5.0-41
> libqb0: 1.0.3-1~bpo9
> lvm2: 2.02.168-pve6
> lxc-pve: 3.1.0-3
> lxcfs: 3.0.3-pve1
> novnc-pve: 1.0.0-3
> proxmox-widget-toolkit: 1.0-25
> pve-cluster: 5.0-36
> pve-container: 2.0-37
> pve-docs: 5.4-2
> pve-edk2-firmware: 1.20190312-1
> pve-firewall: 3.0-19
> pve-firmware: 2.0-6
> pve-ha-manager: 2.0-9
> pve-i18n: 1.1-4
> pve-libspice-server1: 0.14.1-2
> pve-qemu-kvm: 2.12.1-3
> pve-xtermjs: 3.12.0-1
> qemu-server: 5.0-50
> smartmontools: 6.5+svn4324-1
> spiceterm: 3.0-5
> vncterm: 1.5-3
>
>
> Thanks a lot
> Eneko
>
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> Binovo IT Human Project, S.L.
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