Cannot mount an existing ext4 file system from an USB connected HDD

_Michael_ · Oct 15th 2023

Hello,

I have an ext4 formatted HDD (as I can remember I made the file system some years ago with OMV 3.x ). This HDD was in my OMV NAS via some SATA port installed and worked w/o any issue since then. I replace this HDD with a larger one and now I try to copy the old HDD, now connected via USB 3.0 port, to the new HDD. The USB HDD is visible under 'Storage | Disks' as '/dev/sde' but if I go to 'Storage | File Systems -> Mount an existing file system. -> File system' I cannot see anything in the drop down list. What can I do (I restarted OMV already, no change)?

Thanks!

_Michael_

votdev · Oct 15th 2023

What is the output of the CLI command blkid?

Soma · Oct 15th 2023

Output inside CODE boxes of:

lsblk

blkid

mount

_Michael_ · Oct 15th 2023

Hi, the

blkid shows: /dev/sde/: PTTYPE="PMBR"

and the

lsblk shows under column "MOUNTPOINT" nothing (as expected).

Soma · Oct 15th 2023

Quote from _Michael_

Hi, the

blkid shows: /dev/sde/: PTTYPE="PMBR"

and the

lsblk shows under column "MOUNTPOINT" nothing (as expected).

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This reply isn't what was asked.

What is needed is the complete command and full output of them.

_Michael_ · Oct 15th 2023

Sorry, I was not aware how copy the large amount of text. Here it is:

Code

root@nas-pc:~# blkid
/dev/sdc1: LABEL="HDD3TB" UUID="7f9871b6-bb04-4993-af1d-615c1412dfdb" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="64078246-c829-428b-b810-d8ddcf33521c"
/dev/sdb: UUID="e67d01f1-56ad-f19c-e90c-fb9b7d522ce6" UUID_SUB="6d518825-fb82-4f7b-b14b-472a6cb61e44" LABEL="nas-pc:0" TYPE="linux_raid_member"
/dev/sdd1: UUID="b5b1058a-d766-47cf-844e-f9a6fa10de3a" BLOCK_SIZE="4096" TYPE="ext4" PARTUUID="a049ea2d-01"
/dev/sdd5: UUID="5dbaeae9-151b-49e9-b84e-fba2527bea4b" TYPE="swap" PARTUUID="a049ea2d-05"
/dev/sda: UUID="e67d01f1-56ad-f19c-e90c-fb9b7d522ce6" UUID_SUB="be0902d2-0c8a-fb89-4ca4-192117ff3f87" LABEL="nas-pc:0" TYPE="linux_raid_member"
/dev/md0: UUID="3f502ce9-5f64-4155-87dd-d79ce72549a7" BLOCK_SIZE="4096" TYPE="ext4"
/dev/sde: PTTYPE="PMBR"


root@nas-pc:~# lsblk
NAME   MAJ:MIN RM  SIZE RO TYPE  MOUNTPOINT
sda      8:0    0 10.9T  0 disk
└─md0    9:0    0 10.9T  0 raid1 /srv/dev-disk-by-uuid-3f502ce9-5f64-4155-87dd-d79ce72549a7
sdb      8:16   0 10.9T  0 disk
└─md0    9:0    0 10.9T  0 raid1 /srv/dev-disk-by-uuid-3f502ce9-5f64-4155-87dd-d79ce72549a7
sdc      8:32   0  2.7T  0 disk
└─sdc1   8:33   0  2.7T  0 part  /srv/dev-disk-by-uuid-7f9871b6-bb04-4993-af1d-615c1412dfdb
sdd      8:48   0 59.6G  0 disk
├─sdd1   8:49   0 55.9G  0 part  /
├─sdd2   8:50   0    1K  0 part
└─sdd5   8:53   0  3.7G  0 part  [SWAP]
sde      8:64   0  1.8T  0 disk


root@nas-pc:~# 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=1813780k,nr_inodes=453445,mode=755,inode64)
devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,nodev,noexec,relatime,size=370212k,mode=755,inode64)
/dev/sdd1 on / type ext4 (rw,noatime,nodiratime,errors=remount-ro)
securityfs on /sys/kernel/security type securityfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,inode64)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k,inode64)
cgroup2 on /sys/fs/cgroup type cgroup2 (rw,nosuid,nodev,noexec,relatime,nsdelegate,memory_recursiveprot)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
bpf on /sys/fs/bpf type bpf (rw,nosuid,nodev,noexec,relatime,mode=700)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs (rw,relatime,fd=30,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=14837)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime,pagesize=2M)
mqueue on /dev/mqueue type mqueue (rw,nosuid,nodev,noexec,relatime)
tracefs on /sys/kernel/tracing type tracefs (rw,nosuid,nodev,noexec,relatime)
debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
tmpfs on /tmp type tmpfs (rw,relatime,inode64)
/dev/md0 on /srv/dev-disk-by-uuid-3f502ce9-5f64-4155-87dd-d79ce72549a7 type ext4 (rw,relatime,jqfmt=vfsv0,usrjquota=aquota.user,grpjquota=aquota.group)
/dev/sdc1 on /srv/dev-disk-by-uuid-7f9871b6-bb04-4993-af1d-615c1412dfdb type ext4 (rw,relatime,jqfmt=vfsv0,usrjquota=aquota.user,grpjquota=aquota.group)
sunrpc on /run/rpc_pipefs type rpc_pipefs (rw,relatime)
fusectl on /sys/fs/fuse/connections type fusectl (rw,nosuid,nodev,noexec,relatime)
configfs on /sys/kernel/config type configfs (rw,nosuid,nodev,noexec,relatime)

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Soma · Oct 15th 2023

fdisk -l /dev/sde

_Michael_ · Oct 15th 2023

Code

root@nas-pc:~# fdisk -l /dev/sde
GPT PMBR size mismatch (3907029167 != 3907028991) will be corrected by write.
Disk /dev/sde: 1.82 TiB, 2000398843904 bytes, 3907028992 sectors
Disk model: MQ03ABB200
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x00000000


Device     Boot Start        End    Sectors  Size Id Type
/dev/sde1           1 3907028991 3907028991  1.8T ee GPT

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Soma · Oct 15th 2023

Not good news.

No partition is seen/exist on that drive.

Might be the USB-2-SATA adapter you are using or your drive has simply lost it.

Since you had it created attached with a SATA connection, you can try again with it plugged on a SATA port and check again.

Or try a different USB-2-SATA adapter and see if something change.

Otherwise, you need to create a new partition and ALL DATA will be lost

_Michael_ · Oct 15th 2023

Quote from Soma

...
Or try a different USB-2-SATA adapter and see if something change. ...

Thanks a lot for your support, Soma. I changed the external USB HDD enclosure and now it works as expected.

Cannot mount an existing ext4 file system from an USB connected HDD

_Michael_ Oct 15th 2023

Participate now!

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