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- $ mount -o discard,defaults /dev/sdb /mnt/disks/data
- mount: /dev/sdb: can't read superblock
- $ fdisk -l
- ...
- Disk /dev/sdb: 1000 GiB, 1073741824000 bytes, 2097152000 sectors
- Units: sectors of 1 * 512 = 512 bytes
- Sector size (logical/physical): 512 bytes / 4096 bytes
- I/O size (minimum/optimal): 4096 bytes / 4096 bytes
- $ lsblk
- NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
- sdb 8:16 0 1000G 0 disk
- sda 8:0 0 10G 0 disk
- └─sda1 8:1 0 10G 0 part /
- $ fsck.ext4 -v /dev/sdb
- e2fsck 1.42.13 (17-May-2015)
- /dev/sdb has unsupported feature(s): metadata_csum
- e2fsck: Get a newer version of e2fsck!
- $ cat /etc/fstab
- LABEL=cloudimg-rootfs / ext4 defaults 0 0
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