1*6a54128fSAndroid Build Coastguard Workere2fsck external journal 2*6a54128fSAndroid Build Coastguard Worker../e2fsck/e2fsck: Filesystem has unsupported feature(s) while trying to open test.img 3*6a54128fSAndroid Build Coastguard Worker 4*6a54128fSAndroid Build Coastguard WorkerThe superblock could not be read or does not describe a valid ext2/ext3/ext4 5*6a54128fSAndroid Build Coastguard Workerfilesystem. If the device is valid and it really contains an ext2/ext3/ext4 6*6a54128fSAndroid Build Coastguard Workerfilesystem (and not swap or ufs or something else), then the superblock 7*6a54128fSAndroid Build Coastguard Workeris corrupt, and you might try running e2fsck with an alternate superblock: 8*6a54128fSAndroid Build Coastguard Worker e2fsck -b 8193 <device> 9*6a54128fSAndroid Build Coastguard Worker or 10*6a54128fSAndroid Build Coastguard Worker e2fsck -b 32768 <device> 11*6a54128fSAndroid Build Coastguard Worker 12*6a54128fSAndroid Build Coastguard WorkerExit status is 8 13*6a54128fSAndroid Build Coastguard Workerdumpe2fs external journal 14*6a54128fSAndroid Build Coastguard WorkerFilesystem volume name: <none> 15*6a54128fSAndroid Build Coastguard WorkerLast mounted on: <not available> 16*6a54128fSAndroid Build Coastguard WorkerFilesystem magic number: 0xEF53 17*6a54128fSAndroid Build Coastguard WorkerFilesystem revision #: 1 (dynamic) 18*6a54128fSAndroid Build Coastguard WorkerFilesystem features: journal_dev metadata_csum 19*6a54128fSAndroid Build Coastguard WorkerDefault mount options: user_xattr acl block_validity 20*6a54128fSAndroid Build Coastguard WorkerFilesystem state: clean 21*6a54128fSAndroid Build Coastguard WorkerErrors behavior: Continue 22*6a54128fSAndroid Build Coastguard WorkerFilesystem OS type: Linux 23*6a54128fSAndroid Build Coastguard WorkerInode count: 0 24*6a54128fSAndroid Build Coastguard WorkerBlock count: 2048 25*6a54128fSAndroid Build Coastguard WorkerReserved block count: 0 26*6a54128fSAndroid Build Coastguard WorkerFree blocks: 0 27*6a54128fSAndroid Build Coastguard WorkerFree inodes: 0 28*6a54128fSAndroid Build Coastguard WorkerFirst block: 1 29*6a54128fSAndroid Build Coastguard WorkerBlock size: 1024 30*6a54128fSAndroid Build Coastguard WorkerFragment size: 1024 31*6a54128fSAndroid Build Coastguard WorkerBlocks per group: 8192 32*6a54128fSAndroid Build Coastguard WorkerFragments per group: 8192 33*6a54128fSAndroid Build Coastguard WorkerInodes per group: 0 34*6a54128fSAndroid Build Coastguard WorkerInode blocks per group: 0 35*6a54128fSAndroid Build Coastguard WorkerMount count: 0 36*6a54128fSAndroid Build Coastguard WorkerCheck interval: 0 (<none>) 37*6a54128fSAndroid Build Coastguard WorkerReserved blocks uid: 0 38*6a54128fSAndroid Build Coastguard WorkerReserved blocks gid: 0 39*6a54128fSAndroid Build Coastguard WorkerFirst inode: 11 40*6a54128fSAndroid Build Coastguard WorkerInode size: 256 41*6a54128fSAndroid Build Coastguard WorkerRequired extra isize: 28 42*6a54128fSAndroid Build Coastguard WorkerDesired extra isize: 28 43*6a54128fSAndroid Build Coastguard WorkerDefault directory hash: half_md4 44*6a54128fSAndroid Build Coastguard WorkerChecksum type: crc32c 45*6a54128fSAndroid Build Coastguard WorkerJournal features: journal_64bit journal_checksum_v3 46*6a54128fSAndroid Build Coastguard WorkerTotal journal size: 2048k 47*6a54128fSAndroid Build Coastguard WorkerTotal journal blocks: 2048 48*6a54128fSAndroid Build Coastguard WorkerMax transaction length: 2048 49*6a54128fSAndroid Build Coastguard WorkerFast commit length: 0 50*6a54128fSAndroid Build Coastguard WorkerJournal first block: 3 51*6a54128fSAndroid Build Coastguard WorkerJournal sequence: 0x00000003 52*6a54128fSAndroid Build Coastguard WorkerJournal start: 0 53*6a54128fSAndroid Build Coastguard WorkerJournal checksum type: crc32c 54*6a54128fSAndroid Build Coastguard WorkerJournal checksum: 0x661e816f 55*6a54128fSAndroid Build Coastguard WorkerJournal users: 117f752e-f27d-4f6f-a652-072586a29b82 56