41 lines
1.0 KiB
Bash
41 lines
1.0 KiB
Bash
python3 -c "
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import struct
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data = bytearray(open('/tmp/merged_gdt.bin','rb').read())
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# Fix group 0 specifically
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# It has flags=0x0004 (INODE_ZEROED) but missing INODE_UNINIT
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# and has non-zero ib_csum=0x9f37 which won't match zeroed bitmap
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g = 0
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off = 0 # group 0 offset in GDT
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flags = struct.unpack_from('<H', data, off+18)[0]
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print(f'Group 0 flags before: 0x{flags:04x}')
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# Set INODE_UNINIT (0x0002) so libext2fs skips inode bitmap validation
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flags |= 0x0002
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struct.pack_into('<H', data, off+18, flags)
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# Zero the inode bitmap checksum to match actual zeroed data
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struct.pack_into('<H', data, off+26, 0) # ib_csum_lo
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struct.pack_into('<H', data, off+50, 0) # ib_csum_hi
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print(f'Group 0 flags after: 0x{flags:04x}')
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print(f'Group 0 ib_csum now: 0x0000')
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with open('/tmp/merged_gdt.bin','wb') as f:
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f.write(data)
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print('Saved')
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"
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# Restart server
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pkill -f nbd_server
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nbd-client -d /dev/nbd0 2>/dev/null
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sleep 1
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python3 nbd_server_v9.py &
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sleep 2
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nbd-client 127.0.0.1 10809 /dev/nbd0 -N ""
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e2fsck -n /dev/nbd0 2>&1 | head -20
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