Hi Viacheslav, Viacheslav Dubeyko <slava@xxxxxxxxxxx> writes: > (1) the partition size? the first disk with crash was 1TB the second disk with crash, which i have by me, is 2TB: $ lsblk /dev/sdb NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sdb 8:16 0 1.8T 0 disk └─extdisk 254:2 0 1.8T 0 crypt /mnt/b > (2) the logical block size? > (3) the segment size? how can i find (2) and (3) out? here is the output of nilfs-tune: $ sudo nilfs-tune -l /dev/mapper/extdisk nilfs-tune 2.2.7 Filesystem volume name: backup1_nilfs2 Filesystem UUID: 7d9708f9-464f-41b7-a0c6-eda18741012f Filesystem magic number: 0x3434 Filesystem revision #: 2.0 Filesystem features: (none) Filesystem state: valid Filesystem OS type: Linux Block size: 4096 Filesystem created: Thu Dec 27 14:14:14 2018 Last mount time: Fri Dec 20 13:06:15 2019 Last write time: Thu Jan 23 13:04:30 2020 Mount count: 15 Maximum mount count: 50 Reserve blocks uid: 0 (user root) Reserve blocks gid: 0 (group root) First inode: 11 Inode size: 128 DAT entry size: 32 Checkpoint size: 192 Segment usage size: 16 Number of segments: 238465 Device size: 2000396834816 First data block: 1 # of blocks per segment: 2048 Reserved segments %: 5 Last checkpoint #: 9884 Last block address: 280841435 Last sequence #: 137120 Free blocks count: 207591424 Commit interval: 0 # of blks to create seg: 0 CRC seed: 0x5172270a CRC check sum: 0x2ef767d2 CRC check data size: 0x00000118 it seems strange that the last write time is today, even though i mounted the partition read-only /dev/mapper/extdisk on /mnt/b type nilfs2 (ro,relatime) > (4) how the partition was created? using parted then cryptsetup luksFormat then cryptsetup luksOpen then mkfs.nilfs2 > (5) the version of tools that created the partition? how can i find this out? is it saved somewhere? > (6) the amount of free space on the partition? /dev/mapper/extdisk 1.9T 1.1T 699G 61% /mnt/b Regards, Tomas
