how to mount a zfs drive from promox?

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chalan

Member
Mar 16, 2015
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my hw crashed... i have to pull out one hdd and put to usb docking station conected to my desktop pc for saving data from zfs pool... but

Code: 
chalan@chalan-Desktop:~$ sudo zpool status
  pool: rpool
 state: DEGRADED
status: One or more devices could not be used because the label is missing or
    invalid.  Sufficient replicas exist for the pool to continue
    functioning in a degraded state.
action: Replace the device using 'zpool replace'.
   see: http://zfsonlinux.org/msg/ZFS-8000-4J
  scan: resilvered 2,21M in 0h0m with 0 errors on Sat Jul 16 20:32:11 2016
config:

    NAME                                                STATE     READ WRITE CKSUM
    rpool                                               DEGRADED     0     0     0
      mirror-0                                          DEGRADED     0     0     0
        17551691794009115926                            UNAVAIL      0     0     0  was /dev/disk/by-id/ata-WDC_WD10EFRX-68JCSN0_WD-WMC1U6546808-part2
        ata-WDC_WD10EFRX-68PJCN0_WD-WCC4J2021886-part2  ONLINE       0     0     0

errors: No known data errors

Code: 
chalan@chalan-Desktop:~$ sudo mount
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=4018176k,nr_inodes=1004544,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,noexec,relatime,size=808088k,mode=755)
/dev/sda2 on / type ext4 (rw,relatime,errors=remount-ro,data=ordered)
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)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup (rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd)
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)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=32,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=13817)
mqueue on /dev/mqueue type mqueue (rw,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
/dev/sda1 on /boot/efi type vfat (rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro)
rpool on /rpool type zfs (rw,noatime,xattr,noacl)
rpool/ROOT on /rpool/ROOT type zfs (rw,noatime,xattr,noacl)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,relatime)
tmpfs on /run/user/1000 type tmpfs (rw,nosuid,nodev,relatime,size=808088k,mode=700,uid=1000,gid=1000)
gvfsd-fuse on /run/user/1000/gvfs type fuse.gvfsd-fuse (rw,nosuid,nodev,relatime,user_id=1000,group_id=1000)

but

Code: 
chalan@chalan-Desktop:~$ ls -lh /rpool/ROOT/pve-1/
total 0
where are my data from pve? please help...
 
Last edited:
  • Like
Reactions: darkshand
To see ZFS volumes
#zfs list

To mount zvol as filesystem
#mount -t fs_type /dev/zvol/pool_name/zvol_name /mount/point

edit

from your mount list I dont see mounted /rpool/ROOT/pve-1/
 
rpool/ROOT/pve-1 is not mounted because it wants to mount to / and this point already used.

#zfs set mountpint=/pve-1 rpool/ROOT/pve-1

and

#zfs mount rpool/ROOT/pve-1

can help you
 
i did something wrong :( at the beginnig a have done

sudo zpool import rpool -f

and now its look like
Code: 
chalan@chalan-Desktop:~$ sudo zfs list
NAME               USED  AVAIL  REFER  MOUNTPOINT
rpool              893G  6,31G    96K  /rpool
rpool/ROOT         885G  6,31G    96K  /rpool/ROOT
rpool/ROOT/pve-1   885G  6,31G   885G  /
rpool/swap        7,44G  13,8G    88K  -
but
/dev/sda2 on / type ext4 (rw,relatime,errors=remount-ro,data=ordered)
(my desktop drive)
 
thank you very much now i have done

sudo zfs set mountpoint=/media/chalan/proxmox/pve-1 rpool/ROOT/pve-1

and my data from pve are there...

after i make backup, how can i remove the zfs pool from my desktop?
 
  • Like
Reactions: lkProx
I can't find my previous conf files in /pve-1/etc/pve/qemu-server, the qemu-server folder doesn't exists. Is this normal?
 
Okay, make sure you copy that file. The intention would be to install it on a new proxmox installation so that when it boots, it mounts /etc/pve.
Then, you'll have all the access to the configuration files you need. [So, make a backup of the file. Copy it into the same position on a new proxmox installation. reboot that installation. hopefully profit.]

Note: You could do this on a separate machine, for safety, with a fresh install of proxmox . On the fresh proxmox, you replace its config.db with the backup, and reboot; it'll probably complain about missing things, but you're after the contents of /etc/pve.

Really, though, you'd do a fresh proxmox installation[on a different disk], restore the backup files and that db, reboot, and cross your fingers everything magically comes to life.
 
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