Adding new drive > Bad magic number in super-block

A

altomarketing

Renowned Member
Dec 26, 2012
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Hi, I have to add new drive to my server , and i follow step by step this instructions

But when i reach to resize2fs i have a problem.

Code: 
 resize2fs /dev/mapper/pve-data
resize2fs 1.42.12 (29-Aug-2014
resize2fs: Bad magic number in super-block while trying to open /dev/mapper/pve-data
Couldn't find valid filesystem superblock.

I added a 5 Tr. hard drive (actually there are several drives but raid configured as one drive)

pvdisplay
Code: 
sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0
proc /proc proc rw,relatime 0 0
udev /dev devtmpfs rw,relatime,size=10240k,nr_inodes=3081229,mode=755 0 0
devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000 0 0
tmpfs /run tmpfs rw,nosuid,relatime,size=4935708k,mode=755 0 0
/dev/dm-0 / ext4 rw,relatime,errors=remount-ro,data=ordered 0 0
securityfs /sys/kernel/security securityfs rw,nosuid,nodev,noexec,relatime 0 0
tmpfs /dev/shm tmpfs rw,nosuid,nodev 0 0
tmpfs /run/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=5120k 0 0
tmpfs /sys/fs/cgroup tmpfs rw,mode=755 0 0
cgroup /sys/fs/cgroup/systemd cgroup rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd,nsroot=/ 0 0
pstore /sys/fs/pstore pstore rw,nosuid,nodev,noexec,relatime 0 0
cgroup /sys/fs/cgroup/cpuset cgroup rw,nosuid,nodev,noexec,relatime,cpuset,clone_children,nsroot=/ 0 0
cgroup /sys/fs/cgroup/cpu,cpuacct cgroup rw,nosuid,nodev,noexec,relatime,cpu,cpuacct,nsroot=/ 0 0
cgroup /sys/fs/cgroup/blkio cgroup rw,nosuid,nodev,noexec,relatime,blkio,nsroot=/ 0 0
cgroup /sys/fs/cgroup/memory cgroup rw,nosuid,nodev,noexec,relatime,memory,nsroot=/ 0 0
cgroup /sys/fs/cgroup/devices cgroup rw,nosuid,nodev,noexec,relatime,devices,nsroot=/ 0 0
cgroup /sys/fs/cgroup/freezer cgroup rw,nosuid,nodev,noexec,relatime,freezer,nsroot=/ 0 0
cgroup /sys/fs/cgroup/net_cls,net_prio cgroup rw,nosuid,nodev,noexec,relatime,net_cls,net_prio,nsroot=/ 0 0
cgroup /sys/fs/cgroup/perf_event cgroup rw,nosuid,nodev,noexec,relatime,perf_event,release_agent=/run/cgmanager/agents/cgm-release-agent.perf_event,nsroot=/ 0 0
cgroup /sys/fs/cgroup/hugetlb cgroup rw,nosuid,nodev,noexec,relatime,hugetlb,release_agent=/run/cgmanager/agents/cgm-release-agent.hugetlb,nsroot=/ 0 0
cgroup /sys/fs/cgroup/pids cgroup rw,nosuid,nodev,noexec,relatime,pids,release_agent=/run/cgmanager/agents/cgm-release-agent.pids,nsroot=/ 0 0
systemd-1 /proc/sys/fs/binfmt_misc autofs rw,relatime,fd=21,pgrp=1,timeout=300,minproto=5,maxproto=5,direct 0 0
debugfs /sys/kernel/debug debugfs rw,relatime 0 0
mqueue /dev/mqueue mqueue rw,relatime 0 0
hugetlbfs /dev/hugepages hugetlbfs rw,relatime 0 0
fusectl /sys/fs/fuse/connections fusectl rw,relatime 0 0
rpc_pipefs /run/rpc_pipefs rpc_pipefs rw,relatime 0 0
tmpfs /run/lxcfs/controllers tmpfs rw,relatime,size=100k,mode=700 0 0
pids /run/lxcfs/controllers/pids cgroup rw,relatime,pids,release_agent=/run/cgmanager/agents/cgm-release-agent.pids,nsroot=/ 0 0
hugetlb /run/lxcfs/controllers/hugetlb cgroup rw,relatime,hugetlb,release_agent=/run/cgmanager/agents/cgm-release-agent.hugetlb,nsroot=/ 0 0
perf_event /run/lxcfs/controllers/perf_event cgroup rw,relatime,perf_event,release_agent=/run/cgmanager/agents/cgm-release-agent.perf_event,nsroot=/ 0 0
net_cls,net_prio /run/lxcfs/controllers/net_cls,net_prio cgroup rw,relatime,net_cls,net_prio,nsroot=/ 0 0
freezer /run/lxcfs/controllers/freezer cgroup rw,relatime,freezer,nsroot=/ 0 0
devices /run/lxcfs/controllers/devices cgroup rw,relatime,devices,nsroot=/ 0 0
memory /run/lxcfs/controllers/memory cgroup rw,relatime,memory,nsroot=/ 0 0
blkio /run/lxcfs/controllers/blkio cgroup rw,relatime,blkio,nsroot=/ 0 0
cpu,cpuacct /run/lxcfs/controllers/cpu,cpuacct cgroup rw,relatime,cpu,cpuacct,nsroot=/ 0 0
cpuset /run/lxcfs/controllers/cpuset cgroup rw,relatime,cpuset,clone_children,nsroot=/ 0 0
name=systemd /run/lxcfs/controllers/name=systemd cgroup rw,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd,nsroot=/ 0 0
lxcfs /var/lib/lxcfs fuse.lxcfs rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other 0 0
cgmfs /run/cgmanager/fs tmpfs rw,relatime,size=100k,mode=755 0 0
/dev/fuse /etc/pve fuse rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other 0 0

cat /etc/fstab
Code: 
cat /etc/fstab
# <file system> <mount point> <type> <options> <dump> <pass>
/dev/pve/root / ext4 errors=remount-ro 0 1
/dev/pve/swap none swap sw 0 0
proc /proc proc defaults 0 0

mount
Code: 
mount
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,relatime)
udev on /dev type devtmpfs (rw,relatime,size=10240k,nr_inodes=3081229,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,relatime,size=4935708k,mode=755)
/dev/mapper/pve-root 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 (rw,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,nsroot=/)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,nosuid,nodev,noexec,relatime,cpuset,clone_children,nsroot=/)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup (rw,nosuid,nodev,noexec,relatime,cpu,cpuacct,nsroot=/)
cgroup on /sys/fs/cgroup/blkio type cgroup (rw,nosuid,nodev,noexec,relatime,blkio,nsroot=/)
cgroup on /sys/fs/cgroup/memory type cgroup (rw,nosuid,nodev,noexec,relatime,memory,nsroot=/)
cgroup on /sys/fs/cgroup/devices type cgroup (rw,nosuid,nodev,noexec,relatime,devices,nsroot=/)
cgroup on /sys/fs/cgroup/freezer type cgroup (rw,nosuid,nodev,noexec,relatime,freezer,nsroot=/)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup (rw,nosuid,nodev,noexec,relatime,net_cls,net_prio,nsroot=/)
cgroup on /sys/fs/cgroup/perf_event type cgroup (rw,nosuid,nodev,noexec,relatime,perf_event,release_agent=/run/cgmanager/agents/cgm-release-agent.perf_event,nsroot=/)
cgroup on /sys/fs/cgroup/hugetlb type cgroup (rw,nosuid,nodev,noexec,relatime,hugetlb,release_agent=/run/cgmanager/agents/cgm-release-agent.hugetlb,nsroot=/)
cgroup on /sys/fs/cgroup/pids type cgroup (rw,nosuid,nodev,noexec,relatime,pids,release_agent=/run/cgmanager/agents/cgm-release-agent.pids,nsroot=/)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=21,pgrp=1,timeout=300,minproto=5,maxproto=5,direct)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
mqueue on /dev/mqueue type mqueue (rw,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,relatime)
rpc_pipefs on /run/rpc_pipefs type rpc_pipefs (rw,relatime)
tmpfs on /run/lxcfs/controllers type tmpfs (rw,relatime,size=100k,mode=700)
pids on /run/lxcfs/controllers/pids type cgroup (rw,relatime,pids,release_agent=/run/cgmanager/agents/cgm-release-agent.pids,nsroot=/)
hugetlb on /run/lxcfs/controllers/hugetlb type cgroup (rw,relatime,hugetlb,release_agent=/run/cgmanager/agents/cgm-release-agent.hugetlb,nsroot=/)
perf_event on /run/lxcfs/controllers/perf_event type cgroup (rw,relatime,perf_event,release_agent=/run/cgmanager/agents/cgm-release-agent.perf_event,nsroot=/)
net_cls,net_prio on /run/lxcfs/controllers/net_cls,net_prio type cgroup (rw,relatime,net_cls,net_prio,nsroot=/)
freezer on /run/lxcfs/controllers/freezer type cgroup (rw,relatime,freezer,nsroot=/)
devices on /run/lxcfs/controllers/devices type cgroup (rw,relatime,devices,nsroot=/)
memory on /run/lxcfs/controllers/memory type cgroup (rw,relatime,memory,nsroot=/)
blkio on /run/lxcfs/controllers/blkio type cgroup (rw,relatime,blkio,nsroot=/)
cpu,cpuacct on /run/lxcfs/controllers/cpu,cpuacct type cgroup (rw,relatime,cpu,cpuacct,nsroot=/)
cpuset on /run/lxcfs/controllers/cpuset type cgroup (rw,relatime,cpuset,clone_children,nsroot=/)
name=systemd on /run/lxcfs/controllers/name=systemd type cgroup (rw,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd,nsroot=/)
lxcfs on /var/lib/lxcfs type fuse.lxcfs (rw,nosuid,nodev,relatime,user_id=0,group_id=0,allow_other)
cgmfs on /run/cgmanager/fs type tmpfs (rw,relatime,size=100k,mode=755)
/dev/fuse on /etc/pve type fuse (rw,nosuid,nodev,relatime,user_id=0,group_id=0,default_permissions,allow_other)

df -k
Code: 
Filesystem     1K-blocks    Used Available Use% Mounted on
udev               10240       0     10240   0% /dev
tmpfs            4935708    9248   4926460   1% /run
/dev/dm-0       59732092 1385648  55289192   3% /
tmpfs           12339268   61248  12278020   1% /dev/shm
tmpfs               5120       0      5120   0% /run/lock
tmpfs           12339268       0  12339268   0% /sys/fs/cgroup
tmpfs                100       0       100   0% /run/lxcfs/controllers
cgmfs                100       0       100   0% /run/cgmanager/fs
/dev/fuse          30720      20     30700   1% /etc/pve

Actually in my GUI i see new drive that but What i did wrong that i can not do resize2fs ?

PROX.PNG ?
 
More info:

Code: 
root@amor:~# lsblk
NAME               MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda                  8:0    0 232.4G  0 disk
├─sda1               8:1    0  1007K  0 part
├─sda2               8:2    0   127M  0 part
└─sda3               8:3    0 232.3G  0 part
  ├─pve-root       251:0    0    58G  0 lvm  /
  ├─pve-swap       251:1    0     8G  0 lvm  [SWAP]
  ├─pve-data_tmeta 251:2    0    76M  0 lvm
  │ └─pve-data     251:4    0   5.6T  0 lvm
  └─pve-data_tdata 251:3    0   5.6T  0 lvm
    └─pve-data     251:4    0   5.6T  0 lvm
sdb                  8:16   0   5.5T  0 disk
└─sdb1               8:17   0   5.5T  0 part
  └─pve-data_tdata 251:3    0   5.6T  0 lvm
    └─pve-data     251:4    0   5.6T  0 lvm
 
since proxmox ve 4.2 there is no lv data anymore but a lvm thinpool data
see https://pve.proxmox.com/wiki/LVM2

so you cannot mount pve/data or resize its file system (since it has none)
but you already extended it.

CAUTION: please not the section about extending the metadata size in the wiki link above
(else you maybe get corruptions)

i will see if i have the time to update the wiki article you followed
 
dcsapak said:
since proxmox ve 4.2 there is no lv data anymore but a lvm thinpool data
see https://pve.proxmox.com/wiki/LVM2

so you cannot mount pve/data or resize its file system (since it has none)
but you already extended it.
Click to expand...

Ok, should i erase what i did and do like detailed here https://pve.proxmox.com/wiki/LVM2#Configuration_2 ?



I did not understand this " please not the section about extending the metadata size in the wiki link above (else you maybe get corruptions)"

Thanks a lot !!! most of us learn from experts like you with your wikis ! There is no better learning method than receiving your expertise !!
 
altomarketing said:
I did not understand this " please not the section about extending the metadata size in the wiki link above (else you maybe get corruptions)"
Click to expand...
i mean this:

Resize metadata pool
Note: If the pool will extend, then it is be necessary to extent also the metadata pool.
It can be achieved with the following command.

lvresize --poolmetadatasize +<size[M,G]> <VG>/<LVThin_pool>
Click to expand...
 
Hi there... I just followed the same steps myself and at the end get the same error:
resize2fs: Bad magic number in super-block while trying to open /dev/mapper/pve-data
Couldn't find valid filesystem superblock.

My company is testing out Promox v5 and my knowledge is limited with LVM. I added a second hard drive followed all directions. Everything is good until the end. I see that you say to use lvresize --poolmetadatasize +<size[M,G]> <VG>/<LVThin_pool>

But you have to use a logical name for this part at least thats what the error says. What is the default name for this? Sorry I am not very good at LVM yet. But I am stuck at this part. Please, Please help! :)

Thanks,
Ricardo
 
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