Cannot find mounted disk : "already mounted or mount point busy."
You're trying to mount /dev/sdb1
but unmount /dev/sdb
. These are not the same
Oh. Your sudo fsck -f /dev/sdb
- be very glad it refused to do that. You would have destroyed the (mounted) filesystem if you had got the partition sdb1
rather than the disk sdb
.
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eClapton
Updated on September 18, 2022Comments
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eClapton almost 2 years
Im struggling to find why I cannot access a seagate drive. System says it's mounted:
me@helios64:~$ sudo mount /dev/sdb1 /mnt/disk2/ mount: /mnt/disk2: /dev/sdb1 already mounted or mount point busy.
But cannot umount it:
me@helios64:~$ sudo umount -f /dev/sdb umount: /dev/sdb: not mounted.
And also, it is not present in /etc/mtab:
me@helios64:~$ cat /etc/mtab | grep sd cgroup2 /sys/fs/cgroup/unified cgroup2 rw,nosuid,nodev,noexec,relatime,nsdelegate 0 0 nfsd /proc/fs/nfsd nfsd rw,relatime 0 0 /dev/sda1 /srv/dev-disk-by-label-uno ext4 rw,relatime,jqfmt=vfsv0,usrjquota=aquota.user,grpjquota=aquota.group 0 0 /dev/sda1 /export/PLEX ext4 rw,relatime,jqfmt=vfsv0,usrjquota=aquota.user,grpjquota=aquota.group 0 0
Only my first drive sda is showing
me@helios64:~$ dmesg | grep sdb [ 5.014287] sd 1:0:0:0: [sdb] 976773168 512-byte logical blocks: (500 GB/466 GiB) [ 5.014358] sd 1:0:0:0: [sdb] Write Protect is off [ 5.014373] sd 1:0:0:0: [sdb] Mode Sense: 00 3a 00 00 [ 5.014487] sd 1:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 5.041141] sd 1:0:0:0: [sdb] Attached SCSI disk
Tried fsck'ing the drive, but it won't let me... as it says is in use
me@helios64:~$ sudo fsck -f /dev/sdb fsck from util-linux 2.33.1 e2fsck 1.44.5 (15-Dec-2018) /dev/sdb is in use. e2fsck: Cannot continue, aborting.
fdisk -l output:
me@helios64:~$ sudo fdisk -l [...] Disk /dev/sdb: 465,8 GiB, 500107862016 bytes, 976773168 sectors Disk model: ST3500820AS 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: gpt Disk identifier: 91A91874-7314-4C83-8061-0904AE8BF0B1 Device Start End Sectors Size Type /dev/sdb1 2048 976773134 976771087 465,8G Linux filesystem
Any ideas how to
- Force mount, umount?
- Force fsck, as I doubt on the drive's integrity
- Find out where is it mounted? (even I don't think so)
Thank you for your help
EDIT: Tried with the --bind option, but it answers:
mount(2) system call failed: not a directory
Dont understand...
EDIT 2: After mounting successfully, now I cannot write to it... dmesg shows a myriad of:
[ 7822.964530] EXT4-fs (sdb1): I/O error while writing superblock [ 7822.964543] EXT4-fs error (device sdb1) in ext4_convert_unwritten_io_end_vec:4798: Journal has aborted [ 7822.964605] EXT4-fs (sdb1): I/O error while writing superblock [ 7822.964612] EXT4-fs (sdb1): failed to convert unwritten extents to written extents -- potential data loss! (inode 12582922, error -30)
and then:
[ 7822.965799] JBD2: Error -5 detected when updating journal superblock for sdb1-8. [ 7822.972166] EXT4-fs (sdb1): I/O error while writing superblock [ 7822.972182] EXT4-fs error (device sdb1): ext4_journal_check_start:83: Detected aborted journal [ 7822.972187] EXT4-fs (sdb1): Remounting filesystem read-only [ 9018.053019] scsi_io_completion_action: 25 callbacks suppressed
Does this mean I can finally throw away the drive?
EDIT 3:
Oh! there's this big known problem
Does anybody know if I can update the firmware from command line, or USB external? I have this external box for SATA/USB connection.
[Armbian Debian buster 10 Helios64 NAS Linux helios64 5.8.14-rockchip64]
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eClapton over 3 yearsWell, I’ve tried both... really don’t care as I was trying to erase the disk. Rebooted, and then tried to mount again, then it said wrong superblock, but finally let me erase and format. Forgot to mention I previously had tried to create a RAID, which failed. Then decided to use the drives separately. First drive was ok, but this second not. Maybe had something to do with it?
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roaima over 3 yearsIf you'd have mentioned RAID I would have suggested you check for a split mirror. It explains why the disk was locked as busy. Nevertheless in pleased you've achieved what you needed