Messages in this thread | | | From | Tomas Hlavaty <> | Subject | Re: BUG: unable to handle kernel NULL pointer dereference at 00000000000000a8 in nilfs_segctor_do_construct | Date | Thu, 23 Jan 2020 14:00:21 +0100 |
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Hi Viacheslav,
Viacheslav Dubeyko <slava@dubeyko.com> 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
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