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Re: virtual device both is and isn't a valid file system [complete]




Here's the info:
root@barley:~/tempserver-check# date; strace -f mount
/dev/stretch-vg/boot stretch_boot
Tue 14 May 2019 09:33:01 AM PDT
execve("/usr/bin/mount", ["mount", "/dev/stretch-vg/boot",
"stretch_boot"], 0x7ffed2c87238 /* 26 vars */) = 0
brk(NULL)                               = 0x5575487e5000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=169946, ...}) = 0
mmap(NULL, 169946, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f058bb52000
close(3)                                = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libmount.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340\332\0\0\0\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=383456, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0x7f058bb50000
mmap(NULL, 386344, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f058baf1000
mprotect(0x7f058bafd000, 323584, PROT_NONE) = 0
mmap(0x7f058bafd000, 245760, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xc000) = 0x7f058bafd000
mmap(0x7f058bb39000, 73728, PROT_READ,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x48000) = 0x7f058bb39000
mmap(0x7f058bb4c000, 16384, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x5a000) = 0x7f058bb4c000
close(3)                                = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libselinux.so.1",
O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0@k\0\0\0\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=155296, ...}) = 0
mmap(NULL, 2259632, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3,
0) = 0x7f058b8c9000
mprotect(0x7f058b8ee000, 2093056, PROT_NONE) = 0
mmap(0x7f058baed000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x24000) = 0x7f058baed000
mmap(0x7f058baef000, 6832, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f058baef000
close(3)                                = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libc.so.6", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260A\2\0\0\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=1824496, ...}) = 0
mmap(NULL, 1837056, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f058b708000
mprotect(0x7f058b72a000, 1658880, PROT_NONE) = 0
mmap(0x7f058b72a000, 1343488, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x22000) = 0x7f058b72a000
mmap(0x7f058b872000, 311296, PROT_READ,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x16a000) = 0x7f058b872000
mmap(0x7f058b8bf000, 24576, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1b6000) = 0x7f058b8bf000
mmap(0x7f058b8c5000, 14336, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f058b8c5000
close(3)                                = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libblkid.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0P\257\0\0\0\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=343008, ...}) = 0
mmap(NULL, 345896, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f058b6b3000
mprotect(0x7f058b6bd000, 282624, PROT_NONE) = 0
mmap(0x7f058b6bd000, 212992, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xa000) = 0x7f058b6bd000
mmap(0x7f058b6f1000, 65536, PROT_READ,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x3e000) = 0x7f058b6f1000
mmap(0x7f058b702000, 24576, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x4e000) = 0x7f058b702000
close(3)                                = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/librt.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\260#\0\0\0\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=35808, ...}) = 0
mmap(NULL, 39904, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f058b6a9000
mmap(0x7f058b6ab000, 16384, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f058b6ab000
mmap(0x7f058b6af000, 8192, PROT_READ,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7f058b6af000
mmap(0x7f058b6b1000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x7000) = 0x7f058b6b1000
close(3)                                = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libpcre.so.3", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340!\0\0\0\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=468944, ...}) = 0
mmap(NULL, 471304, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f058b635000
mmap(0x7f058b637000, 335872, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f058b637000
mmap(0x7f058b689000, 122880, PROT_READ,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x54000) = 0x7f058b689000
mmap(0x7f058b6a7000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x71000) = 0x7f058b6a7000
close(3)                                = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libdl.so.2", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0000\21\0\0\0\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=14592, ...}) = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0x7f058b633000
mmap(NULL, 16656, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f058b62e000
mmap(0x7f058b62f000, 4096, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1000) = 0x7f058b62f000
mmap(0x7f058b630000, 4096, PROT_READ,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f058b630000
mmap(0x7f058b631000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f058b631000
close(3)                                = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libuuid.so.1", O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0
#\0\0\0\0\0\0"..., 832) = 832
fstat(3, {st_mode=S_IFREG|0644, st_size=30776, ...}) = 0
mmap(NULL, 32792, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f058b625000
mmap(0x7f058b627000, 16384, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x2000) = 0x7f058b627000
mmap(0x7f058b62b000, 4096, PROT_READ,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7f058b62b000
mmap(0x7f058b62c000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7f058b62c000
close(3)                                = 0
openat(AT_FDCWD, "/lib/x86_64-linux-gnu/libpthread.so.0",
O_RDONLY|O_CLOEXEC) = 3
read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0@l\0\0\0\0\0\0"...,
832) = 832
fstat(3, {st_mode=S_IFREG|0755, st_size=146968, ...}) = 0
mmap(NULL, 132288, PROT_READ, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f058b604000
mmap(0x7f058b60a000, 61440, PROT_READ|PROT_EXEC,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x6000) = 0x7f058b60a000
mmap(0x7f058b619000, 24576, PROT_READ,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x7f058b619000
mmap(0x7f058b61f000, 8192, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x1a000) = 0x7f058b61f000
mmap(0x7f058b621000, 13504, PROT_READ|PROT_WRITE,
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f058b621000
close(3)                                = 0
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0x7f058b602000
arch_prctl(ARCH_SET_FS, 0x7f058b603100) = 0
mprotect(0x7f058b8bf000, 16384, PROT_READ) = 0
mprotect(0x7f058b61f000, 4096, PROT_READ) = 0
mprotect(0x7f058b62c000, 4096, PROT_READ) = 0
mprotect(0x7f058b631000, 4096, PROT_READ) = 0
mprotect(0x7f058b6a7000, 4096, PROT_READ) = 0
mprotect(0x7f058b6b1000, 4096, PROT_READ) = 0
mprotect(0x7f058b702000, 20480, PROT_READ) = 0
mprotect(0x7f058baed000, 4096, PROT_READ) = 0
mprotect(0x7f058bb4c000, 12288, PROT_READ) = 0
mprotect(0x55754854b000, 4096, PROT_READ) = 0
mprotect(0x7f058bba3000, 4096, PROT_READ) = 0
munmap(0x7f058bb52000, 169946)          = 0
set_tid_address(0x7f058b6033d0)         = 4271
set_robust_list(0x7f058b6033e0, 24)     = 0
rt_sigaction(SIGRTMIN, {sa_handler=0x7f058b60a6b0, sa_mask=[],
sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7f058b616730}, NULL, 8)
= 0
rt_sigaction(SIGRT_1, {sa_handler=0x7f058b60a740, sa_mask=[],
sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO,
sa_restorer=0x7f058b616730}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=9788*1024,
rlim_max=RLIM64_INFINITY}) = 0
statfs("/sys/fs/selinux", 0x7ffd59cdfda0) = -1 ENOENT (No such file or
directory)
statfs("/selinux", 0x7ffd59cdfda0)      = -1 ENOENT (No such file or directory)
brk(NULL)                               = 0x5575487e5000
brk(0x557548806000)                     = 0x557548806000
openat(AT_FDCWD, "/proc/filesystems", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
read(3, "nodev\tsysfs\nnodev\trootfs\nnodev\tr"..., 1024) = 354
read(3, "", 1024)                       = 0
close(3)                                = 0
access("/etc/selinux/config", F_OK)     = 0
openat(AT_FDCWD, "/usr/lib/locale/locale-archive", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=5631424, ...}) = 0
mmap(NULL, 5631424, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f058b0a3000
close(3)                                = 0
getuid()                                = 0
geteuid()                               = 0
access("/sys/fs/smackfs", F_OK)         = -1 ENOENT (No such file or directory)
lstat("/dev", {st_mode=S_IFDIR|0755, st_size=5560, ...}) = 0
lstat("/dev/stretch-vg", {st_mode=S_IFDIR|0755, st_size=140, ...}) = 0
lstat("/dev/stretch-vg/boot", {st_mode=S_IFLNK|0777, st_size=8, ...}) = 0
readlink("/dev/stretch-vg/boot", "../dm-30", 4095) = 8
lstat("/dev/dm-30", {st_mode=S_IFBLK|0660, st_rdev=makedev(0xfd,
0x1e), ...}) = 0
stat("/dev/dm-30", {st_mode=S_IFBLK|0660, st_rdev=makedev(0xfd, 0x1e), ...}) = 0
openat(AT_FDCWD, "/sys/block/dm-30/dm/name", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0444, st_size=4096, ...}) = 0
read(3, "stretch--vg-boot\n", 4096)     = 17
close(3)                                = 0
stat("/dev/mapper/stretch--vg-boot", {st_mode=S_IFBLK|0660,
st_rdev=makedev(0xfd, 0x1e), ...}) = 0
getcwd("/root/tempserver-check", 4096)  = 23
lstat("/root/tempserver-check/stretch_boot", {st_mode=S_IFDIR|0755,
st_size=4096, ...}) = 0
access("/dev/mapper/stretch--vg-boot", F_OK) = 0
openat(AT_FDCWD, "/dev/mapper/stretch--vg-boot", O_RDONLY|O_CLOEXEC) = 3
fadvise64(3, 0, 0, POSIX_FADV_RANDOM)   = 0
fstat(3, {st_mode=S_IFBLK|0660, st_rdev=makedev(0xfd, 0x1e), ...}) = 0
ioctl(3, BLKGETSIZE64, [398458880])     = 0
openat(AT_FDCWD, "/sys/dev/block/253:30", O_RDONLY|O_CLOEXEC) = 4
openat(4, "dm/uuid", O_RDONLY|O_CLOEXEC) = 5
read(5, "LVM-3dcV99ZH3Y7prfkBtGFmGKnAtnyQ"..., 8191) = 69
read(5, "", 8122)                       = 0
close(5)                                = 0
close(4)                                = 0
lseek(3, 398393344, SEEK_SET)           = 398393344
read(3, "\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\0\0\0"...,
64) = 64
lseek(3, 398450688, SEEK_SET)           = 398450688
read(3, "\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\0\0\0"...,
256) = 256
lseek(3, 0, SEEK_SET)                   = 0
read(3, "\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\0\0\0"...,
256) = 256
lseek(3, 4096, SEEK_SET)                = 4096
read(3, "\1\0\4\0\21\0\4\0!\0\4\0\364\17\256\6\4\0\4\0\0\0\0\0\251[gm\255\6l\33"...,
256) = 256
lseek(3, 398458368, SEEK_SET)           = 398458368
read(3, "\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\0\0\0"...,
512) = 512
lseek(3, 398327296, SEEK_SET)           = 398327296
read(3, "\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\0\0\0"...,
512) = 512
openat(AT_FDCWD, "/sys/dev/block/253:30", O_RDONLY|O_CLOEXEC) = 4
faccessat(4, "partition", F_OK)         = -1 ENOENT (No such file or directory)
openat(4, "dm/uuid", O_RDONLY|O_CLOEXEC) = 5
read(5, "LVM-3dcV99ZH3Y7prfkBtGFmGKnAtnyQ"..., 8191) = 69
read(5, "", 8122)                       = 0
close(5)                                = 0
close(4)                                = 0
ioctl(3, BLKSSZGET, [512])              = 0
lseek(3, 398457856, SEEK_SET)           = 398457856
read(3, "\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\0\0\0"...,
48) = 48
lseek(3, 398426624, SEEK_SET)           = 398426624
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 24) = 24
lseek(3, 398328320, SEEK_SET)           = 398328320
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 24) = 24
lseek(3, 398327808, SEEK_SET)           = 398327808
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 24) = 24
lseek(3, 398254592, SEEK_SET)           = 398254592
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 24) = 24
lseek(3, 398156288, SEEK_SET)           = 398156288
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 24) = 24
lseek(3, 398113280, SEEK_SET)           = 398113280
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 24) = 24
lseek(3, 398082560, SEEK_SET)           = 398082560
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 24) = 24
lseek(3, 397992448, SEEK_SET)           = 397992448
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 24) = 24
lseek(3, 397960192, SEEK_SET)           = 397960192
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 24) = 24
lseek(3, 397951488, SEEK_SET)           = 397951488
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 24) = 24
lseek(3, 397971968, SEEK_SET)           = 397971968
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 24) = 24
lseek(3, 396878336, SEEK_SET)           = 396878336
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 24) = 24
lseek(3, 398453248, SEEK_SET)           = 398453248
read(3, "\0\0\0\0", 4)                  = 4
lseek(3, 4096, SEEK_SET)                = 4096
read(3, "\1\0\4\0\21\0\4\0!\0\4\0\364\17\256\6\4\0\4\0\0\0\0\0\251[gm\255\6l\33"...,
1024) = 1024
lseek(3, 398454784, SEEK_SET)           = 398454784
read(3, "\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\0\0\0"...,
4096) = 4096
lseek(3, 0, SEEK_SET)                   = 0
read(3, "\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\0\0\0"...,
1024) = 1024
lseek(3, 1024, SEEK_SET)                = 1024
read(3, "\0}\1\0\0\360\5\0\0L\0\0\223*\4\0\247{\1\0\1\0\0\0\0\0\0\0\0\0\0\0"...,
1024) = 1024
lseek(3, 16384, SEEK_SET)               = 16384
read(3, "\20 \0\0\20`\0\0\20\240\0\0\20\340\0\0\20 \1\0\20
\3\0\20`\3\0\0\0\0\0"..., 512) = 512
lseek(3, 32768, SEEK_SET)               = 32768
read(3, "  \0\0 `\0\0 \240\0\0 \340\0\0  \1\0  \3\0 `\3\0\0\0\0\0"...,
512) = 512
lseek(3, 65536, SEEK_SET)               = 65536
read(3, "@ \0\0@`\0\0@\240\0\0@\340\0\0@ \1\0@ \3\0@`\3\0\0\0\0\0"...,
512) = 512
lseek(3, 131072, SEEK_SET)              = 131072
read(3, "\200 \0\0\200`\0\0\200\240\0\0\200\340\0\0\200 \1\0\200
\3\0\200`\3\0\0\0\0\0"..., 512) = 512
lseek(3, 262144, SEEK_SET)              = 262144
read(3, "\0!\0\0\0a\0\0\0\241\0\0\0\341\0\0\0!\1\0\0!\3\0\0a\3\0\0\0\0\0"...,
512) = 512
lseek(3, 524288, SEEK_SET)              = 524288
read(3, "\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\0\0\0"...,
512) = 512
lseek(3, 1048576, SEEK_SET)             = 1048576
read(3, "\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\0\0\0"...,
512) = 512
lseek(3, 2097152, SEEK_SET)             = 2097152
read(3, "\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\0\0\0"...,
512) = 512
lseek(3, 4194304, SEEK_SET)             = 4194304
read(3, "\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\0\0\0"...,
512) = 512
lseek(3, 1048576, SEEK_SET)             = 1048576
read(3, "\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\0\0\0"...,
1024) = 1024
lseek(3, 3072, SEEK_SET)                = 3072
read(3, "\1\0\2\0\21\0\2\0!\0\2\0\0\20\360\7\0\0\5\0\0\0\0\0\355\267\0\0\360\7\262\32"...,
1024) = 1024
lseek(3, 7168, SEEK_SET)                = 7168
read(3, "\7 \0\0\7`\0\0\7\240\0\0\7\340\0\0\7 \1\0\7
\3\0\7`\3\0\0\0\0\0"..., 1024) = 1024
lseek(3, 15360, SEEK_SET)               = 15360
read(3, "\17 \0\0\17`\0\0\17\240\0\0\17\340\0\0\17 \1\0\17
\3\0\17`\3\0\0\0\0\0"..., 1024) = 1024
lseek(3, 31744, SEEK_SET)               = 31744
read(3, "\37 \0\0\37`\0\0\37\240\0\0\37\340\0\0\37 \1\0\37
\3\0\37`\3\0\0\0\0\0"..., 1024) = 1024
lseek(3, 64512, SEEK_SET)               = 64512
read(3, "? \0\0?`\0\0?\240\0\0?\340\0\0? \1\0? \3\0?`\3\0\0\0\0\0"...,
1024) = 1024
lseek(3, 0, SEEK_SET)                   = 0
mmap(NULL, 266240, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0x7f058b062000
read(3, "\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\0\0\0"...,
262144) = 262144
lseek(3, 262144, SEEK_SET)              = 262144
mmap(NULL, 266240, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0x7f058b021000
read(3, "\0!\0\0\0a\0\0\0\241\0\0\0\341\0\0\0!\1\0\0!\3\0\0a\3\0\0\0\0\0"...,
262144) = 262144
lseek(3, 397934592, SEEK_SET)           = 397934592
mmap(NULL, 266240, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0x7f058afe0000
read(3, "\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\0\0\0"...,
262144) = 262144
lseek(3, 398196736, SEEK_SET)           = 398196736
mmap(NULL, 266240, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
-1, 0) = 0x7f058af9f000
read(3, "\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\0\0\0"...,
262144) = 262144
lseek(3, 2097152, SEEK_SET)             = 2097152
read(3, "\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\0\0\0"...,
1024) = 1024
close(3)                                = 0
munmap(0x7f058b062000, 266240)          = 0
munmap(0x7f058b021000, 266240)          = 0
munmap(0x7f058afe0000, 266240)          = 0
munmap(0x7f058af9f000, 266240)          = 0
stat("/sbin/mount.ext4", 0x7ffd59cddad0) = -1 ENOENT (No such file or directory)
stat("/sbin/fs.d/mount.ext4", 0x7ffd59cddad0) = -1 ENOENT (No such
file or directory)
stat("/sbin/fs/mount.ext4", 0x7ffd59cddad0) = -1 ENOENT (No such file
or directory)
getuid()                                = 0
geteuid()                               = 0
getgid()                                = 0
getegid()                               = 0
prctl(PR_GET_DUMPABLE)                  = 1 (SUID_DUMP_USER)
stat("/run", {st_mode=S_IFDIR|0755, st_size=1240, ...}) = 0
lstat("/run/mount/utab", 0x7ffd59cdec10) = -1 ENOENT (No such file or directory)
mkdir("/run/mount", 0755)               = -1 EEXIST (File exists)
stat("/run/mount/utab", 0x7ffd59cdeb00) = -1 ENOENT (No such file or directory)
stat("/run/mount", {st_mode=S_IFDIR|0755, st_size=40, ...}) = 0
geteuid()                               = 0
getegid()                               = 0
getuid()                                = 0
getgid()                                = 0
access("/run/mount", R_OK|W_OK)         = 0
mount("/dev/mapper/stretch--vg-boot",
"/root/tempserver-check/stretch_boot", "ext4", 0, NULL) = -1 EIO
(Input/output error)
openat(AT_FDCWD, "/usr/share/locale/locale.alias", O_RDONLY|O_CLOEXEC) = 3
fstat(3, {st_mode=S_IFREG|0644, st_size=2995, ...}) = 0
read(3, "# Locale name alias data base.\n#"..., 4096) = 2995
read(3, "", 4096)                       = 0
close(3)                                = 0
openat(AT_FDCWD,
"/usr/share/locale/en_US.UTF-8/LC_MESSAGES/util-linux.mo", O_RDONLY) =
-1 ENOENT (No such file or directory)
openat(AT_FDCWD,
"/usr/share/locale/en_US.utf8/LC_MESSAGES/util-linux.mo", O_RDONLY) =
-1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en_US/LC_MESSAGES/util-linux.mo",
O_RDONLY) = -1 ENOENT (No such file or directory)
openat(AT_FDCWD,
"/usr/share/locale/en.UTF-8/LC_MESSAGES/util-linux.mo", O_RDONLY) = -1
ENOENT (No such file or directory)
openat(AT_FDCWD,
"/usr/share/locale/en.utf8/LC_MESSAGES/util-linux.mo", O_RDONLY) = -1
ENOENT (No such file or directory)
openat(AT_FDCWD, "/usr/share/locale/en/LC_MESSAGES/util-linux.mo",
O_RDONLY) = -1 ENOENT (No such file or directory)
write(2, "mount: ", 7mount: )                  = 7
write(2, "/root/tempserver-check/stretch_b"...,
91/root/tempserver-check/stretch_boot: can't read superblock on
/dev/mapper/stretch--vg-boot.) = 91
write(2, "\n", 1
)                       = 1
close(1)                                = 0
close(2)                                = 0
exit_group(32)                          = ?
+++ exited with 32 +++
root@barley:~/tempserver-check# dmesg | tail
[39530.328790] EXT4-fs (dm-30): mount failed
[40566.133158] audit: type=1400 audit(1557817207.785:31):
apparmor="DENIED" operation="open" profile="/usr/sbin/cups-browsed"
name="/usr/share/cups/locale/" pid=23717 comm="cups-browsed"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[40566.133186] audit: type=1400 audit(1557817207.785:32):
apparmor="DENIED" operation="open" profile="/usr/sbin/cups-browsed"
name="/usr/share/locale/" pid=23717 comm="cups-browsed"
requested_mask="r" denied_mask="r" fsuid=0 ouid=0
[60924.796860] perf: interrupt took too long (4974 > 4947), lowering
kernel.perf_event_max_sample_rate to 40000
[68155.285591] Process accounting resumed
[74940.130661] block nbd3: Write on read-only
[74940.130666] print_req_error: I/O error, dev nbd3, sector 22843394
[74940.130671] Buffer I/O error on dev dm-30, logical block 1, lost
sync page write
[74940.130677] EXT4-fs (dm-30): I/O error while writing superblock
[74940.130684] EXT4-fs (dm-30): mount failed
root@barley:~/tempserver-check# e2fsck -fn /dev/stretch-vg/boot
e2fsck 1.44.5 (15-Dec-2018)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/stretch-vg/boot: 345/97536 files (0.3% non-contiguous),
116077/389120 blocks