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Re: What uses these 50 GB?

Hello Eric,

thank you for the quick reply and the explanations.

dumpe2fs -h output might show us that.

Filesystem volume name:   <none>
Last mounted on:          /opt/ssd
Filesystem UUID:          75d6aae6-1746-4260-994b-148dfdb5af95
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index 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
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              29310976
Block count:              117212886
Reserved block count:     5860644
Free blocks:              115322570
Free inodes:              29310965
First block:              0
Block size:               4096
Fragment size:            4096
Reserved GDT blocks:      996
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         8192
Inode blocks per group:   512
Flex block group size:    16
Filesystem created:       Wed Apr 16 06:31:53 2014
Last mount time:          Wed Apr 16 06:48:26 2014
Last write time:          Wed Apr 16 06:48:26 2014
Mount count:              1
Maximum mount count:      -1
Last checked:             Wed Apr 16 06:31:53 2014
Check interval:           0 (<none>)
Lifetime writes:          133 MB
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:       8388637
Default directory hash:   half_md4
Directory Hash Seed:      a094608e-671f-4a9c-81e8-81bb72eb4516
Journal backup:           inode blocks
Journal features:         journal_incompat_revoke
Journal size:             128M
Journal length:           32768
Journal sequence:         0x001d92ff
Journal start:            27755

It could also be open but unlinked files, or unprocessed orphan inodes
after a crash.  Have you run e2fsck?

No, not yet. Shoud I do this routinely? Running

sudo e2fsck -fn /dev/sdc

gives as result:

Warning!  /dev/sdc is mounted.
Warning: skipping journal recovery because doing a read-only filesystem check.
Pass 1: Checking inodes, blocks, and sizes
Deleted inode 8388637 has zero dtime.  Fix? no

Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Block bitmap differences:  -(9255--9422) -(33793--33801) -(33808--33870)

... (really long list)

Fix? no

Free blocks count wrong (115322570, counted=14605339).
Fix? no

Inode bitmap differences:  -8388637
Fix? no

Free inodes count wrong (29310965, counted=29310750).
Fix? no

/dev/sdc: ********** WARNING: Filesystem still has errors **********

/dev/sdc: 11/29310976 files (272.7% non-contiguous), 1890316/117212886 blocks

So I assume the best thing to do here would be to unmount the disk and do a e2fsck?

Best regards,


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