After power outage, Ubuntu couldn't repair ext4 and throws the same error as below with e2fsck:
So I use the latest SystemRescue LiveCd and try to manually do fsck.
e2fsck /dev/sda2 :
/dev/sda2: recovering journal
Signal (11) SIGSEGV si_code=SEGV_MAPERR fault addr=0x561377ff7000
e2fsck: malloc.c:2539: sysmalloc: Assertion `(old_top == initial_top (av) && old_size == 0) || ((unsigned long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long) old_end & (pagesize - 1)) == 0)' failed.
Signal (6) SIGABRT si_code=SI_TKILL
tune2fs -l /dev/sda2 :
tune2fs 1.46.4 (18-Aug-2021)
Filesystem volume name: <none>
Last mounted on: /
Filesystem UUID: 787f0a6f-7d49-409d-80b7-5e4416d5a2bb
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index fast_commit filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Filesystem flags: signed_directory_hash
Default mount options: user_xattr acl
Filesystem state: clean with errors
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 30236672
Block count: 120925696
Reserved block count: 6046284
Free blocks: 16403757
Free inodes: 29241790
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 995
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
Flex block group size: 16
Filesystem created: Mon Apr 2 12:16:18 2018
Last mount time: Mon Nov 8 10:55:03 2021
Last write time: Mon Nov 8 14:02:43 2021
Mount count: 2
Maximum mount count: -1
Last checked: Mon Nov 8 10:51:38 2021
Check interval: 0 (<none>)
Lifetime writes: 13 TB
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 256
Required extra isize: 28
Desired extra isize: 28
Journal inode: 8
First orphan inode: 27918882
Default directory hash: half_md4
Directory Hash Seed: efb4ad95-8a43-42bc-a03b-0849ccae2ef7
Journal backup: inode blocks
mount /dev/sda2 /mnt :
mount: /mnt: can't read superblock on /dev/sda2.
mke2fs -n /dev/sda2 :
mke2fs 1.46.4 (18-Aug-2021)
/dev/sda2 contains a ext4 file system
last mounted on / on Mon Nov 8 10:55:03 2021
Proceed anyway? (y,N) y
Creating filesystem with 120925696 4k blocks and 30236672 inodes
Filesystem UUID: 331dfa9a-1bae-44bf-b4a2-4c75d7a8aab2
Superblock backups stored on blocks:
32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
102400000
e2fsck -b 32768 /dev/sda2 :
e2fsck 1.46.4 (18-Aug-2021)
Superblock needs_recovery flag is clear, but journal has data.
Recovery flag not set in backup superblock, so running journal anyway.
/dev/sda2: recovering journal
Signal (11) SIGSEGV si_code=SEGV_MAPERR fault addr=0x55657e320000
e2fsck(+0x35133)[0x55657d929133]
/usr/lib/libpthread.so.0(+0x13870)[0x7fb669365870]
e2fsck(+0x27c10)[0x55657d91bc10]
e2fsck(+0x28480)[0x55657d91c480]
e2fsck(+0x309c4)[0x55657d9249c4]
e2fsck(jbd2_journal_recover+0xd7)[0x55657d9251a7]
e2fsck(e2fsck_run_ext3_journal+0x2d1)[0x55657d91e871]
e2fsck(main+0x1d75)[0x55657d903de5]
/usr/lib/libc.so.6(__libc_start_main+0xd5)[0x7fb6691adb25]
e2fsck(_start+0x2e)[0x55657d90591e]
e2fsck -b 98304 /dev/sda2:
e2fsck 1.46.4 (18-Aug-2021)
Superblock needs_recovery flag is clear, but journal has data.
Recovery flag not set in backup superblock, so running journal anyway.
/dev/sda2: recovering journal
Signal (11) SIGSEGV si_code=SEGV_MAPERR fault addr=0x563839a50000
e2fsck(+0x35133)[0x563838e06133]
/usr/lib/libpthread.so.0(+0x13870)[0x7f671f521870]
e2fsck(+0x27c10)[0x563838df8c10]
e2fsck(+0x28480)[0x563838df9480]
e2fsck(+0x309c4)[0x563838e019c4]
e2fsck(jbd2_journal_recover+0xd7)[0x563838e021a7]
e2fsck(e2fsck_run_ext3_journal+0x2d1)[0x563838dfb871]
e2fsck(main+0x1d75)[0x563838de0de5]
/usr/lib/libc.so.6(__libc_start_main+0xd5)[0x7f671f369b25]
e2fsck(_start+0x2e)[0x563838de291e]
e2fsck -C0 -p -f -v /dev/sda2 :
/dev/sda2: recovering journal
Signal (11) SIGSEGV si_code=SEGV_MAPERR fault addr=0x555ae23f5000
e2fsck(+0x35133)[0x555ae03cd133]
/usr/lib/libpthread.so.0(+0x13870)[0x7efe927b8870]
e2fsck(+0x27c10)[0x555ae03bfc10]
e2fsck(+0x28480)[0x555ae03c0480]
e2fsck(+0x309c4)[0x555ae03c89c4]
e2fsck(jbd2_journal_recover+0xd7)[0x555ae03c91a7]
e2fsck(e2fsck_run_ext3_journal+0x2d1)[0x555ae03c2871]
e2fsck(main+0x1d75)[0x555ae03a7de5]
/usr/lib/libc.so.6(__libc_start_main+0xd5)[0x7efe92600b25]
e2fsck(_start+0x2e)[0x555ae03a991e]
smartctl -H /dev/sda2:
smartctl 7.2 2020-12-30 r5155 [x86_64-linux-5.10.70-1-lts] (local build)
Copyright (C) 2002-20, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
