Bebarapa waktu lalu saya mendapatkan laporan dari client yang mengalami error saat restore backup secara manual, beliau tidak dapat me-restore backup dari image VM ke server node proxmox yang baru.
berikut ini adalah errornya

restore vma archive: vma extract -v -r /var/tmp/vzdumptmp13709.fifo /var/lib/vz/dump/vzdump-qemu-100-2015_02_04-10_27_01.vma /var/tmp/vzdumptmp13709
CFG: size: 303 name: qemu-server.conf
DEV: dev_id=1 size: 375809638400 devname: drive-ide0
CTIME: Wed Feb  4 10:27:03 2015
TASK ERROR: command 'vma extract -v -r /var/tmp/vzdumptmp13709.fifo /var/lib/vz/dump/vzdump-qemu-100-2015_02_04-10_27_01.vma /var/tmp/vzdumptmp13709' failed: command '/usr/bin/qemu-img create -o 'preallocation=metadata' -f qcow2 /var/lib/vz/images/111/vm-111-disk-1.qcow2 367001600K' failed: got timeout

client saya menggunakan Proxmox Versi 3.2-1/1933730b. setelah saya telusuri lebih dalam, error tersebut memang bugs dari proxmox itu sendiri
silahkan cek versi qemu-server anda dengan menggunakan perintah dibawah ini

Error saat restore backup secara manual

root@proxmox-arielfx~# pveversion -v | grep qemu-server
qemu-server: 3.1-15

jika qemu-server anda sama seperti diatas, silahkan upgrade qemu-server anda secara manual dengan cara

root@proxmox-arielfx~# wget http://mirror.webnx.com/proxmox/dists/wheezy/pve-no-subscription/binary-amd64/qemu-server_3.1-16_amd64.deb
root@proxmox-arielfx~# dpkg -i qemu-server_3.1-15_amd64.deb

setelah upgrade qemu-server selesai, silahkan coba kembali untuk restore backup anda. hasilnya nanti akan seperti dibawah ini

progress 57% (read 214211493888 bytes, duration 1176 sec)
progress 58% (read 217969590272 bytes, duration 1183 sec)
progress 59% (read 221727686656 bytes, duration 1185 sec)
progress 60% (read 225485783040 bytes, duration 1185 sec)
progress 61% (read 229243879424 bytes, duration 1185 sec)
progress 62% (read 233001975808 bytes, duration 1185 sec)
progress 63% (read 236760072192 bytes, duration 1187 sec)
progress 64% (read 240518168576 bytes, duration 1188 sec)
progress 65% (read 244276264960 bytes, duration 1188 sec)
progress 66% (read 248034361344 bytes, duration 1188 sec)
progress 67% (read 251792457728 bytes, duration 1188 sec)
progress 68% (read 255550554112 bytes, duration 1189 sec)
progress 69% (read 259308650496 bytes, duration 1189 sec)
progress 70% (read 263066746880 bytes, duration 1189 sec)
progress 71% (read 266824843264 bytes, duration 1189 sec)
progress 72% (read 270582939648 bytes, duration 1195 sec)
progress 73% (read 274341036032 bytes, duration 1197 sec)
progress 74% (read 278099132416 bytes, duration 1199 sec)
progress 75% (read 281857228800 bytes, duration 1201 sec)
progress 76% (read 285615325184 bytes, duration 1204 sec)
progress 77% (read 289373421568 bytes, duration 1206 sec)
progress 78% (read 293131517952 bytes, duration 1208 sec)
progress 79% (read 296889614336 bytes, duration 1209 sec)
progress 80% (read 300647710720 bytes, duration 1209 sec)
progress 81% (read 304405807104 bytes, duration 1209 sec)
progress 82% (read 308163903488 bytes, duration 1213 sec)
progress 83% (read 311921999872 bytes, duration 1215 sec)
progress 84% (read 315680096256 bytes, duration 1219 sec)
progress 85% (read 319438192640 bytes, duration 1233 sec)
progress 86% (read 323196289024 bytes, duration 1233 sec)
progress 87% (read 326954385408 bytes, duration 1233 sec)
progress 88% (read 330712481792 bytes, duration 1233 sec)
progress 89% (read 334470578176 bytes, duration 1234 sec)
progress 90% (read 338228674560 bytes, duration 1234 sec)
progress 91% (read 341986770944 bytes, duration 1234 sec)
progress 92% (read 345744867328 bytes, duration 1234 sec)
progress 93% (read 349502963712 bytes, duration 1235 sec)
progress 94% (read 353261060096 bytes, duration 1235 sec)
progress 95% (read 357019156480 bytes, duration 1237 sec)
progress 96% (read 360777252864 bytes, duration 1241 sec)
progress 97% (read 364535349248 bytes, duration 1242 sec)
progress 98% (read 368293445632 bytes, duration 1242 sec)
progress 99% (read 372051542016 bytes, duration 1242 sec)
progress 100% (read 375809638400 bytes, duration 1242 sec)
total bytes read 375809638400, sparse bytes 344074932224 (91.6%)
space reduction due to 4K zero bocks 1.28%

proses restore sudah selesai, dan selamat menikmati artikel Error saat restore backup secara manual 😀