Hmmm...
"8\0\0\0\3\0\0\0^\0\0\0\0\0\0\0\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 135168) = 56
14:57:09.387124 writev(4, [{iov_base="x\0\0\0\0\0\0\0^\0\0\0\0\0\0\0", iov_len=16}, {iov_base="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\5\0\0\0\0\0\0\0\0\20\0\0\0\0\0\0"..., iov_len=104}], 2) = 120
14:57:09.387258 read(4, "0\0\0\0\"\0\0\0`\0\0\0\0\0\0\0\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 135168) = 48
14:57:09.387377 writev(4, [{iov_base="\20\0\0\0\0\0\0\0`\0\0\0\0\0\0\0", iov_len=16}], 1) = 16
14:57:09.387449 read(4, "0\0\0\0\33\0\0\0b\0\0\0\0\0\0\0\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 135168) = 48
14:57:09.387494 writev(4, [{iov_base=" \0\0\0\0\0\0\0b\0\0\0\0\0\0\0", iov_len=16}, {iov_base="\220?\377\261\tV\0\0\0\0\0\0\0\0\0\0", iov_len=16}], 2) = 32
14:57:09.387530 read(4, "`\0\0\0'\0\0\0d\0\0\0\0\0\0\0\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 135168) = 96
14:57:09.387565 stat("/dev/loop0", {st_mode=S_IFBLK|0660, st_rdev=makedev(0x7, 0), ...}) = 0
14:57:09.387602 openat(AT_FDCWD, "/sys/dev/block/7:0/discard_alignment", O_RDONLY) = 6
14:57:09.387641 newfstatat(6, "", {st_mode=S_IFREG|0444, st_size=4096, ...}, AT_EMPTY_PATH) = 0
14:57:09.387669 read(6, "0\n", 4096) = 2
14:57:09.387697 close(6) = 0
14:57:09.387723 openat(AT_FDCWD, "/sys/dev/block/7:0/queue/discard_granularity", O_RDONLY) = 6
14:57:09.387750 newfstatat(6, "", {st_mode=S_IFREG|0444, st_size=4096, ...}, AT_EMPTY_PATH) = 0
14:57:09.387775 read(6, "4096\n", 4096) = 5
14:57:09.387799 close(6) = 0
14:57:09.387821 openat(AT_FDCWD, "/sys/dev/block/7:0/queue/discard_max_bytes", O_RDONLY) = 6
14:57:09.387846 newfstatat(6, "", {st_mode=S_IFREG|0644, st_size=4096, ...}, AT_EMPTY_PATH) = 0
14:57:09.387870 read(6, "4294966784\n", 4096) = 11
14:57:09.387896 close(6) = 0
14:57:09.387922 fsync(3) = 0
14:57:09.387976 pread64(3, "\367\377\177\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096, 134246400) = 4096
14:57:09.388020 ioctl(3, BLKDISCARD, [12288, 4096]) = -1 EBUSY (Device or resource busy)
14:57:09.388058 writev(4, [{iov_base="8\0\0\0\0\0\0\0d\0\0\0\0\0\0\0", iov_len=16}, {iov_base="\360\377\377\377\0\0\0\0\0\0\0\0\0\0\0\0", iov_len=16}, {iov_base="\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", iov_len=24}], 3) = 56
14:57:09.388099 read(4, "@\0\0\0\35\0\0\0f\0\0\0\0\0\0\0\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 135168) = 64
14:57:09.388200 writev(4, [{iov_base="\20\0\0\0\0\0\0\0f\0\0\0\0\0\0\0", iov_len=16}], 1) = 16
14:57:09.388252 read(4,
Die Frage ist, wodurch es belegt ist.
Durch ntfs3g selbst ... ;-)