Public bug reported:
mkfs from util-linux 2.26.2
during an exercise with creating xfs partitions on a Ubuntu 15.10 64 Bit
virtual machine,
I guess I found a bug.
Explanation:
When creating an xfs filesystem on a partition with a existing gpt table, the
mkfs command return an error message
with the advice to force the command to run by using the -f option (lowercase f)
However, it wont work and as you can see at my bash text, the command tells me
that -f (lowercase f) is an invalid option.
I read the manpages of mkfs to determine what should be the correct option.
Even here, the -f (lowercase f) is mentioned.
-f Force overwrite when an existing filesystem is detected on the
device. By default, mkfs.xfs will not write to the device if it
suspects that there is a filesystem or partition table on the device
already.
So I tried the uppercase F (-F) to FORCE the command to overwrite everything
which worked !
So there are 2 possibilities:
#1 I am to dump to use a -f properly
#2 The texts (man pages and stderr)are wrong written and should be replaced
with a uppercase F.
root@ubuntu:/mnt# mkfs -t xfs /dev/sdb2
mkfs.xfs: /dev/sdb2 appears to contain a partition table (gpt).
mkfs.xfs: Use the -f option to force overwrite.
root@ubuntu:/mnt# mkfs -tf xfs /dev/sdb2
mkfs: failed to execute mkfs.f: No such file or directory
root@ubuntu:/mnt# mkfs -t -f xfs /dev/sdb2
mkfs: failed to execute mkfs.-f: No such file or directory
root@ubuntu:/mnt# mkfs -f -t xfs /dev/sdb2
mkfs.ext2: invalid option -- 'f'
root@ubuntu:/mnt# mkfs -F -t xfs /dev/sdb2
mke2fs 1.42.12 (29-Aug-2014)
Found a gpt partition table in /dev/sdb2
Your mke2fs.conf file does not define the xfs filesystem type.
Creating filesystem with 512000 1k blocks and 128016 inodes
Filesystem UUID: 216b73d3-d57e-49b4-a288-b1a0ac9a5ce6
Superblock backups stored on blocks:
8193, 24577, 40961, 57345, 73729, 204801, 221185, 401409
Allocating group tables: done
Writing inode tables: done
Writing superblocks and filesystem accounting information: done
Please give a feedback if my observation is correct or wrong.
With best regards
Stephan H. Wenderlich
** Affects: util-linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1535137
Title:
Explanation bug in mkfs xfs Filesystem mkfs from util-linux 2.26.2
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