UFS mount: /dev/da3p2: Device busy

[ziomario]

Hello to everyone.

I have installed FreeBSD 13-stable. Everytime I try to mount the da3p2 partition,I get this error :

# mount -t ufs /dev/da3p2 /mnt/da3p2
mount: /dev/da3p2: Device busy

I don't understand why,since I haven't mounted that partition before. The folder is empty.

ls /mnt/da3p2

In addition,I've gone in single user mode and I did :

fsck -y /dev/da3p2

it has fixed all the errors. I did it several times and I dind't see anymore errors,but I'm not still able to mount the da3p2 device. Below u can see which kind of disk it is :

# geom disk list

Geom name: da3
Providers:
1. Name: da3
Mediasize: 2000398933504 (1.8T)
Sectorsize: 512
Stripesize: 4096
Stripeoffset: 0
Mode: r1w1e2
descr: Seagate M3 Portable
lunname: NM13N4CZ
lunid: 3e4d31334e34435a
ident: NM13N4CZ
rotationrate: unknown
fwsectors: 63
fwheads: 255
 
# gpart show

=>        40  3907029094  da3  GPT  (1.8T)
          40      532480    1  efi  (260M)
532520  3898073080    2  freebsd-ufs  (1.8T)
3898605600     8388608    3  freebsd-swap  (4.0G)
3906994208       34926       - free -  (17M)

so,what should I do ? This particular problem is not present when I run FreeBSD 13R or FreeBSD 14-CURRENT,installed on different disks.

 

[covacat]

try mounting readonly
if that works try to turn softupdates and or journaling off

 

[_martin]

You should check if that partition is not mounted somewhere already: mount |grep da3p2.

 

[SirDice]

You should check if that partition is not mounted somewhere already: mount |grep da3p2.

Also check for the label of the partition, if it has one. It may already been mounted using the label.

 

[ziomario]

that's interesting. it's the first time that I see the disk automounted. It happens only on freebsd 13 stable.

mount |grep da3p2
/dev/da3p2 on /media/Seagate_M3_Portable_NM13N4CZ_p2 (ufs, local, soft-updates, journaled soft-updates)

 

[Cath O'Deray]

… the first time that I see the disk automounted. …

cat /etc/fstab

What's there?

… empty. …

Please, are you certain? Given what's below, I imagine partition 2 containing an operating system.

# gpart show

=>        40  3907029094  da3  GPT  (1.8T)
          40      532480    1  efi  (260M)
532520  3898073080    2  freebsd-ufs  (1.8T)
3898605600     8388608    3  freebsd-swap  (4.0G)
3906994208       34926       - free -  (17M)