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145 | $ url="http://cloud-images.ubuntu.com/daily/server/vivid/20150125/vivid-server-cloudimg-arm64.tar.gz"
$ lsb_release -sc
trusty
$ uname -r
3.13.0-44-generic
$ dpkg-query --show e2fsprogs
e2fsprogs 1.42.9-3ubuntu1
$ wget $url -O vivid-server-cloudimg-arm64.tar.gz
$ tar -Sxvzf vivid-server-cloudimg-arm64.tar.gz
$ md5sum vivid-server-cloudimg-arm64.img
a3a3f888c6d4151ed51bc57473f549de vivid-server-cloudimg-arm64.img
$ resize2fs -P vivid-server-cloudimg-arm64.img
resize2fs 1.42.9 (4-Feb-2014)
Estimated minimum size of the filesystem: 282190
$ dumpe2fs vivid-server-cloudimg-arm64.img
dumpe2fs 1.42.9 (4-Feb-2014)
Filesystem volume name: cloudimg-rootfs
Last mounted on: /tmp/mount-image-callback.XVthNx/mp
Filesystem UUID: 62f910d0-7f18-49a3-8716-945d47e6acfa
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Filesystem flags: unsigned_directory_hash
Default mount options: user_xattr acl
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 145152
Block count: 290304
Reserved block count: 0
Free blocks: 20226
Free inodes: 81265
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 127
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 16128
Inode blocks per group: 1008
Flex block group size: 16
Filesystem created: Sun Jan 25 03:38:06 2015
Last mount time: Sun Jan 25 03:45:43 2015
Last write time: Sun Jan 25 03:46:56 2015
Mount count: 2
Maximum mount count: -1
Last checked: Sun Jan 25 03:38:06 2015
Check interval: 0 (<none>)
Lifetime writes: 33 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
Default directory hash: half_md4
Directory Hash Seed: b6f30db9-e621-42f3-8322-ad1c6be017c9
Journal backup: inode blocks
Journal features: (none)
Journal size: 32M
Journal length: 8192
Journal sequence: 0x0000000d
Journal start: 0
Group 0: (Blocks 0-32767) [ITABLE_ZEROED]
Checksum 0x5d15, unused inodes 0
Primary superblock at 0, Group descriptors at 1-1
Reserved GDT blocks at 2-128
Block bitmap at 129 (+129), Inode bitmap at 138 (+138)
Inode table at 147-1154 (+147)
12797 free blocks, 0 free inodes, 1933 directories
Free blocks: 19971-32767
Free inodes:
Group 1: (Blocks 32768-65535) [ITABLE_ZEROED]
Checksum 0xc965, unused inodes 0
Backup superblock at 32768, Group descriptors at 32769-32769
Reserved GDT blocks at 32770-32896
Block bitmap at 130 (bg #0 + 130), Inode bitmap at 139 (bg #0 + 139)
Inode table at 1155-2162 (bg #0 + 1155)
0 free blocks, 0 free inodes, 1202 directories
Free blocks:
Free inodes:
Group 2: (Blocks 65536-98303) [ITABLE_ZEROED]
Checksum 0x07a1, unused inodes 0
Block bitmap at 131 (bg #0 + 131), Inode bitmap at 140 (bg #0 + 140)
Inode table at 2163-3170 (bg #0 + 2163)
0 free blocks, 0 free inodes, 422 directories
Free blocks:
Free inodes:
Group 3: (Blocks 98304-131071) [ITABLE_ZEROED]
Checksum 0xf50c, unused inodes 2825
Backup superblock at 98304, Group descriptors at 98305-98305
Reserved GDT blocks at 98306-98432
Block bitmap at 132 (bg #0 + 132), Inode bitmap at 141 (bg #0 + 141)
Inode table at 3171-4178 (bg #0 + 3171)
0 free blocks, 2825 free inodes, 2674 directories, 2825 unused inodes
Free blocks:
Free inodes: 61688-64512
Group 4: (Blocks 131072-163839) [ITABLE_ZEROED]
Checksum 0x200a, unused inodes 13928
Block bitmap at 133 (bg #0 + 133), Inode bitmap at 142 (bg #0 + 142)
Inode table at 4179-5186 (bg #0 + 4179)
509 free blocks, 13928 free inodes, 2200 directories, 13928 unused inodes
Free blocks: 151043-151551
Free inodes: 66713-80640
Group 5: (Blocks 163840-196607) [INODE_UNINIT, ITABLE_ZEROED]
Checksum 0xba26, unused inodes 16128
Backup superblock at 163840, Group descriptors at 163841-163841
Reserved GDT blocks at 163842-163968
Block bitmap at 134 (bg #0 + 134), Inode bitmap at 143 (bg #0 + 143)
Inode table at 5187-6194 (bg #0 + 5187)
0 free blocks, 16128 free inodes, 0 directories, 16128 unused inodes
Free blocks:
Free inodes: 80641-96768
Group 6: (Blocks 196608-229375) [INODE_UNINIT, ITABLE_ZEROED]
Checksum 0x8d2c, unused inodes 16128
Block bitmap at 135 (bg #0 + 135), Inode bitmap at 144 (bg #0 + 144)
Inode table at 6195-7202 (bg #0 + 6195)
0 free blocks, 16128 free inodes, 0 directories, 16128 unused inodes
Free blocks:
Free inodes: 96769-112896
Group 7: (Blocks 229376-262143) [INODE_UNINIT, ITABLE_ZEROED]
Checksum 0xe68b, unused inodes 16128
Backup superblock at 229376, Group descriptors at 229377-229377
Reserved GDT blocks at 229378-229504
Block bitmap at 136 (bg #0 + 136), Inode bitmap at 145 (bg #0 + 145)
Inode table at 7203-8210 (bg #0 + 7203)
0 free blocks, 16128 free inodes, 0 directories, 16128 unused inodes
Free blocks:
Free inodes: 112897-129024
Group 8: (Blocks 262144-290303) [INODE_UNINIT, ITABLE_ZEROED]
Checksum 0xa0b0, unused inodes 16128
Block bitmap at 137 (bg #0 + 137), Inode bitmap at 146 (bg #0 + 146)
Inode table at 8211-9218 (bg #0 + 8211)
6920 free blocks, 16128 free inodes, 0 directories, 16128 unused inodes
Free blocks: 269442-269443, 269516-269567, 269630, 269639, 269659, 269682-269683, 269692-270335, 270341-270344, 275844, 275858-275860, 275871-275872, 276417-276479, 280576-286719
Free inodes: 129025-145152
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