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Difference between bbox mke2fs and standard one (dumpe2fs comparison):
Two significant differences:
- standard mke2fs has resize_inode feature and thus has reserved GDT blocks,
which decreases free blocks;
- inode size: 128/256 (since 679807k is >0.5G, standard mke2fs uses "big" inodes)
this affects inode table in block groups
Filesystem volume name: <none> Filesystem volume name: <none>
Last mounted on: <not available> Last mounted on: <not available>
Filesystem UUID: f4839760-c89b-44b7-ac52-08b4e326c0b4 Filesystem UUID: 71179558-8c8e-4a56-ad54-018008f5c358
Filesystem magic number: 0xEF53 Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic) Filesystem revision #: 1 (dynamic)
Filesystem features: ext_attr dir_index filetype sparse_super Filesystem features: ext_attr resize_inode dir_index filetype sparse_super large_file
Filesystem flags: signed_directory_hash Filesystem flags: signed_directory_hash
Default mount options: (none) Default mount options: (none)
Filesystem state: clean Filesystem state: clean
Errors behavior: Continue Errors behavior: Continue
Filesystem OS type: Linux Filesystem OS type: Linux
Inode count: 42624 Inode count: 42528
Block count: 169951 Block count: 169951
Reserved block count: 8497 Reserved block count: 8497
Free blocks: 168594 Free blocks: 167103
Free inodes: 42613 Free inodes: 42517
First block: 0 First block: 0
Block size: 4096 Block size: 4096
Fragment size: 4096 Fragment size: 4096
Reserved GDT blocks: 41
Blocks per group: 32768 Blocks per group: 32768
Fragments per group: 32768 Fragments per group: 32768
Inodes per group: 7104 Inodes per group: 7088
Inode blocks per group: 222 Inode blocks per group: 443
Filesystem created: Wed Oct 21 13:40:55 2009 Filesystem created: Wed Oct 21 13:40:55 2009
Last mount time: n/a Last mount time: n/a
Last write time: Wed Oct 21 13:40:55 2009 Last write time: Wed Oct 21 13:40:55 2009
Mount count: 0 Mount count: 0
Maximum mount count: 20 Maximum mount count: 37
Last checked: Wed Oct 21 13:40:55 2009 Last checked: Wed Oct 21 13:40:55 2009
Check interval: 15552000 (6 months) Check interval: 15552000 (6 months)
Next check after: Mon Apr 19 13:40:55 2010 Next check after: Mon Apr 19 13:40:55 2010
Reserved blocks uid: 0 (user root) Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root) Reserved blocks gid: 0 (group root)
First inode: 11 First inode: 11
Inode size: 128 Inode size: 256
Required extra isize: 28
Desired extra isize: 28
Default directory hash: half_md4 Default directory hash: half_md4
Directory Hash Seed: ff94d047-c9ca-4fe5-b553-937a76101a89 Directory Hash Seed: c270fd43-9868-4a92-ae99-050098e12835
Group 0: (Blocks 0-32767) Group 0: (Blocks 0-32767)
Primary superblock at 0, Group descriptors at 1-1 Primary superblock at 0, Group descriptors at 1-1
Reserved GDT blocks at 2-42
Block bitmap at 2 (+2), Inode bitmap at 3 (+3) Block bitmap at 43 (+43), Inode bitmap at 44 (+44)
Inode table at 4-225 (+4) Inode table at 45-487 (+45)
32537 free blocks, 7093 free inodes, 2 directories 32274 free blocks, 7077 free inodes, 2 directories
Free blocks: 231-32767 Free blocks: 494-32767
Free inodes: 12-7104 Free inodes: 12-7088
Group 1: (Blocks 32768-65535) Group 1: (Blocks 32768-65535)
Backup superblock at 32768, Group descriptors at 32769-32769 Backup superblock at 32768, Group descriptors at 32769-32769
Reserved GDT blocks at 32770-32810
Block bitmap at 32770 (+2), Inode bitmap at 32771 (+3) Block bitmap at 32811 (+43), Inode bitmap at 32812 (+44)
Inode table at 32772-32993 (+4) Inode table at 32813-33255 (+45)
32542 free blocks, 7104 free inodes, 0 directories 32280 free blocks, 7088 free inodes, 0 directories
Free blocks: 32994-65535 Free blocks: 33256-65535
Free inodes: 7105-14208 Free inodes: 7089-14176
Group 2: (Blocks 65536-98303) Group 2: (Blocks 65536-98303)
Block bitmap at 65536 (+0), Inode bitmap at 65537 (+1) Block bitmap at 65536 (+0), Inode bitmap at 65537 (+1)
Inode table at 65538-65759 (+2) Inode table at 65538-65980 (+2)
32544 free blocks, 7104 free inodes, 0 directories 32323 free blocks, 7088 free inodes, 0 directories
Free blocks: 65760-98303 Free blocks: 65981-98303
Free inodes: 14209-21312 Free inodes: 14177-21264
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