[Elektron]

@NiMa, here you go.

[admin@pixie ]# ./strace mount /dev/loop0 /mnt/user
execve("/bin/mount", ["mount", "/dev/loop0", "/mnt/user"], [/* 19 vars */]) = 0
brk(0)                                  = 0xb5000
uname({sys="Linux", node="kobo", ...})  = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aacb000
access("/etc/ld.so.preload", R_OK)      = 0
open("/etc/ld.so.preload", O_RDONLY|O_CLOEXEC) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=22, ...}) = 0
mmap2(NULL, 22, PROT_READ|PROT_WRITE, MAP_PRIVATE, 3, 0) = 0x2aacc000
close(3)                                = 0
open("/lib/libarmmem-v7l.so", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\20\5\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=15076, ...}) = 0
mmap2(NULL, 79308, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2aadc000
mprotect(0x2aae0000, 61440, PROT_NONE)  = 0
mmap2(0x2aaef000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3) = 0x2aaef000
close(3)                                = 0
munmap(0x2aacc000, 22)                  = 0
open("/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
open("/lib/tls/v7l/neon/vfp/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/v7l/neon/vfp", 0x7e8c4378) = -1 ENOENT (No such file or directory)
open("/lib/tls/v7l/neon/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/v7l/neon", 0x7e8c4378) = -1 ENOENT (No such file or directory)
open("/lib/tls/v7l/vfp/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/v7l/vfp", 0x7e8c4378)  = -1 ENOENT (No such file or directory)
open("/lib/tls/v7l/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/v7l", 0x7e8c4378)      = -1 ENOENT (No such file or directory)
open("/lib/tls/neon/vfp/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/neon/vfp", 0x7e8c4378) = -1 ENOENT (No such file or directory)
open("/lib/tls/neon/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/neon", 0x7e8c4378)     = -1 ENOENT (No such file or directory)
open("/lib/tls/vfp/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/vfp", 0x7e8c4378)      = -1 ENOENT (No such file or directory)
open("/lib/tls/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/tls", 0x7e8c4378)          = -1 ENOENT (No such file or directory)
open("/lib/v7l/neon/vfp/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/v7l/neon/vfp", 0x7e8c4378) = -1 ENOENT (No such file or directory)
open("/lib/v7l/neon/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/v7l/neon", 0x7e8c4378)     = -1 ENOENT (No such file or directory)
open("/lib/v7l/vfp/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/v7l/vfp", 0x7e8c4378)      = -1 ENOENT (No such file or directory)
open("/lib/v7l/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/v7l", 0x7e8c4378)          = -1 ENOENT (No such file or directory)
open("/lib/neon/vfp/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/neon/vfp", 0x7e8c4378)     = -1 ENOENT (No such file or directory)
open("/lib/neon/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/neon", 0x7e8c4378)         = -1 ENOENT (No such file or directory)
open("/lib/vfp/libm.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory)
stat64("/lib/vfp", 0x7e8c4378)          = -1 ENOENT (No such file or directory)
open("/lib/libm.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0h<\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=407144, ...}) = 0
mmap2(NULL, 471184, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2aaf0000
mprotect(0x2ab53000, 61440, PROT_NONE)  = 0
mmap2(0x2ab62000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x62) = 0x2ab62000
close(3)                                = 0
open("/lib/libresolv.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0@%\0\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=59268, ...}) = 0
mmap2(NULL, 133044, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2ab64000
mprotect(0x2ab71000, 65536, PROT_NONE)  = 0
mmap2(0x2ab81000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xd) = 0x2ab81000
mmap2(0x2ab83000, 6068, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2ab83000
close(3)                                = 0
open("/lib/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\3\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\234g\1\0004\0\0\0"..., 512) = 512
fstat64(3, {st_mode=S_IFREG|0755, st_size=1289388, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aacc000
mmap2(NULL, 1357192, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x2ab85000
mprotect(0x2acbc000, 61440, PROT_NONE)  = 0
mmap2(0x2accb000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x136) = 0x2accb000
mmap2(0x2acce000, 9608, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x2acce000
close(3)                                = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aacd000
set_tls(0x2aaccb40, 0x2aacd228, 0x2aadb050, 0x2aaccb40, 0x2aadb050) = 0
mprotect(0x2accb000, 8192, PROT_READ)   = 0
mprotect(0x2ab81000, 4096, PROT_READ)   = 0
mprotect(0x2ab62000, 4096, PROT_READ)   = 0
mprotect(0x2aada000, 4096, PROT_READ)   = 0
getuid32()                              = 0
brk(0)                                  = 0xb5000
brk(0xd6000)                            = 0xd6000
getuid32()                              = 0
geteuid32()                             = 0
stat64("/dev/loop0", {st_mode=S_IFBLK|0660, st_rdev=makedev(7, 0), ...}) = 0
open("/etc/filesystems", O_RDONLY|O_LARGEFILE) = -1 ENOENT (No such file or directory)
open("/proc/filesystems", O_RDONLY|O_LARGEFILE) = 3
fstat64(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2aace000
read(3, "nodev\tsysfs\nnodev\trootfs\nnodev\tb"..., 1024) = 160
read(3, "", 1024)                       = 0
mount("/dev/loop0", "/mnt/user", "ext2", MS_SILENT, NULL) = -1 EINVAL (Invalid argument)
mount("/dev/loop0", "/mnt/user", "ext3", MS_SILENT, NULL) = -1 EINVAL (Invalid argument)
mount("/dev/loop0", "/mnt/user", "ext4", MS_SILENT, NULL) = -1 EINVAL (Invalid argument)
mount("/dev/loop0", "/mnt/user", "vfat", MS_SILENT, NULL) = -1 EIO (Input/output error)
mount("/dev/loop0", "/mnt/user", "msdos", MS_SILENT, NULL) = -1 EIO (Input/output error)
write(2, "mount: mounting /dev/loop0 on /m"..., 67mount: mounting /dev/loop0 on /mnt/user failed: Input/output error
) = 67
exit_group(255)