root@raspberrypi:/tmp/tor# dmesg | tail -n 100 | grep sda1
[960973.571988] EXT4-fs error (device sda1): ext4_mb_generate_buddy:757: group 64, block bitmap and bg descriptor inconsistent: 24189 vs 24544 free clusters
[960973.595896] Aborting journal on device sda1-8.
[960973.598906] Buffer I/O error on dev sda1, logical block 3702784, lost sync page write
[960973.599023] JBD2: Error -5 detected when updating journal superblock for sda1-8.
[960973.599282] EXT4-fs error (device sda1) in ext4_reserve_inode_write:4980: Journal has aborted
[960973.612499] Buffer I/O error on dev sda1, logical block 0, lost sync page write
[960973.612739] EXT4-fs error (device sda1) in ext4_dirty_inode:5105: Journal has aborted
[960973.622935] EXT4-fs (sda1): previous I/O error to superblock detected
[960973.624991] Buffer I/O error on dev sda1, logical block 0, lost sync page write
[960973.628916] EXT4-fs (sda1): previous I/O error to superblock detected
[960973.630816] Buffer I/O error on dev sda1, logical block 0, lost sync page write
[960973.631022] EXT4-fs error (device sda1): ext4_journal_check_start:56: Detected aborted journal
[960973.641871] EXT4-fs (sda1): Remounting filesystem read-only
[960973.655438] EXT4-fs (sda1): previous I/O error to superblock detected
[960973.657128] Buffer I/O error on dev sda1, logical block 0, lost sync page write
[960973.660570] EXT4-fs error (device sda1) in ext4_reserve_inode_write:4980: Journal has aborted
[960973.692256] EXT4-fs (sda1): previous I/O error to superblock detected
[960973.694031] Buffer I/O error on dev sda1, logical block 0, lost sync page write
[965485.492544] EXT4-fs (sda1): previous I/O error to superblock detected
[965485.493958] Buffer I/O error on dev sda1, logical block 0, lost sync page write
[965485.494082] EXT4-fs error (device sda1): ext4_put_super:765: Couldn't clean up the journal
[965485.580116]  sda: sda1
[965493.838219] EXT4-fs (sda1): INFO: recovery required on readonly filesystem
[965493.838261] EXT4-fs (sda1): write access unavailable, cannot proceed