Hello
You suggested that I use a file to simulate a partition. I could not highlight
the incident.
However, the commands you offer can also be used with a partition. So I no
longer need to use gparted.
This highlights that it is the resize command that destroys the partition. Here
is the trace below and also in attached file
______________
UNDER UBUNTU1910
.
sudo -i
export LC_ALL=POSIX
mount /dev/sda1 /mnt
ls -ls /mnt
total 28
4 drwx------ 20 root root 4096 Jan 5 12:54 P2
4 drwx------ 20 root root 4096 Jan 5 12:59 P3
4 drwx------ 20 root root 4096 Jan 5 13:04 P4
16 drwx------ 2 root root 16384 Jan 5 12:38 lost+found
umount /dev/sda1
e2fsck -f /dev/sda1
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
bug_1857914: 11765/3932160 files (0.4% non-contiguous),
11842526/15728640 blocks
resize2fs -p /dev/sda1 50G
resize2fs 1.45.3 (14-Jul-2019)
Resizing the filesystem on /dev/sda1 to 13107200 (4k) blocks.
Begin pass 2 (max = 2580320)
Relocating blocks XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Begin pass 3 (max = 480)
Scanning inode table XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
Begin pass 4 (max = 5606)
Updating inode references XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
The filesystem on /dev/sda1 is now 13107200 (4k) blocks long.
e2fsck /dev/sda1
e2fsck 1.45.3 (14-Jul-2019)
Superblock has an invalid journal (inode 8).
Clear<y>? cancelled!
e2fsck: The journal superblock is corrupt while checking journal for
bug_1857914
e2fsck: Cannot proceed with file system check
dumpe2fs -h /dev/sda1
dumpe2fs 1.45.3 (14-Jul-2019)
Filesystem volume name: bug 1857914
....................
dumpe2fs: Inode checksum does not match inode while reading journal
inode
mount /dev/sda1 /mnt
mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sda1,
missing codepage or helper program, or other error.
dmesg | tail -2
[ 2319.145382] EXT4-fs error (device sda1): ext4_get_journal_inode:4751:
inode #8: comm mount: iget: checksum invalid
[ 2319.176425] EXT4-fs (sda1): no journal found
** Attachment added: "used commands"
https://bugs.launchpad.net/ubuntu/+source/gpart/+bug/1857914/+attachment/5317723/+files/BUG2.txt
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https://bugs.launchpad.net/bugs/1857914
Title:
resize2fs destroy the content of the partition
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