Subject: File System Full
From: Phil Daws <uxbod@splatnix.net>
Date: Fri, 10 Feb 2012 10:45:00 +0000 (GMT)
Fri, 10 Feb 2012 10:45:00 +0000 (GMT)
Hello all, 


we are seeing a strange issue where one of our vserver guests is reporting that its
file system is full yet there is plenty of space: 



usera:/var/run# df -h 
Filesystem Size Used Avail Use% Mounted on 
/dev/hdv1 1008G 187G 812G 19% / 
none 128M 0 128M 0% /tmp 
usera:/var/run# touch testfile 
touch: cannot touch `testfile': No space left on device 


Below is a strace -f when running the touch testfile command: 



usera:/var/run# strace -f touch testfile 
execve("/usr/bin/touch", ["touch", "testfile"], [/* 28 vars */]) = 0 
brk(0) = 0x60d000 
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) 
mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3429ad3000

access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) 
open("/etc/ld.so.cache", O_RDONLY) = 3 
fstat(3, {st_mode=S_IFREG|0644, st_size=153901, ...}) = 0 
mmap(NULL, 153901, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f3429aad000 
close(3) = 0 
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) 
open("/lib/librt.so.1", O_RDONLY) = 3 
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220!\0\0\0\0\0\0@"..., 832)
= 832 
fstat(3, {st_mode=S_IFREG|0644, st_size=31744, ...}) = 0 
mmap(NULL, 2128848, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f34296b0000

mprotect(0x7f34296b7000, 2093056, PROT_NONE) = 0 
mmap(0x7f34298b6000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE,
3, 0x6000) = 0x7f34298b6000 
close(3) = 0 
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) 
open("/lib/libc.so.6", O_RDONLY) = 3 
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\355\1\0\0\0\0\0@"..., 832)
= 832 
fstat(3, {st_mode=S_IFREG|0755, st_size=1432968, ...}) = 0 
mmap(NULL, 3541032, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f342934f000

mprotect(0x7f34294a7000, 2093056, PROT_NONE) = 0 
mmap(0x7f34296a6000, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE,
3, 0x157000) = 0x7f34296a6000 
mmap(0x7f34296ab000, 18472, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS,
-1, 0) = 0x7f34296ab000 
close(3) = 0 
access("/etc/ld.so.nohwcap", F_OK) = -1 ENOENT (No such file or directory) 
open("/lib/libpthread.so.0", O_RDONLY) = 3 
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340Y\0\0\0\0\0\0@"..., 832)
= 832 
fstat(3, {st_mode=S_IFREG|0755, st_size=131260, ...}) = 0 
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3429aac000

mmap(NULL, 2208640, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f3429133000

mprotect(0x7f342914a000, 2093056, PROT_NONE) = 0 
mmap(0x7f3429349000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE,
3, 0x16000) = 0x7f3429349000 
mmap(0x7f342934b000, 13184, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS,
-1, 0) = 0x7f342934b000 
close(3) = 0 
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3429aab000

mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3429aaa000

arch_prctl(ARCH_SET_FS, 0x7f3429aab700) = 0 
open("/dev/urandom", O_RDONLY) = 3 
read(3, "\270_f\37!\232;"..., 7) = 7 
close(3) = 0 
mprotect(0x7f3429349000, 4096, PROT_READ) = 0 
mprotect(0x7f34296a6000, 16384, PROT_READ) = 0 
mprotect(0x7f34298b6000, 4096, PROT_READ) = 0 
mprotect(0x7f3429ad5000, 4096, PROT_READ) = 0 
munmap(0x7f3429aad000, 153901) = 0 
set_tid_address(0x7f3429aab9d0) = 13524 
set_robust_list(0x7f3429aab9e0, 0x18) = 0 
futex(0x7fff31ad739c, FUTEX_WAKE_PRIVATE, 1) = 0 
futex(0x7fff31ad739c, 0x189 /* FUTEX_??? */, 1, NULL, 7f3429aab700) = -1 ENOSYS (Function
not implemented) 
rt_sigaction(SIGRTMIN, {0x7f3429138860, [], SA_RESTORER|SA_SIGINFO, 0x7f3429141f60},
NULL, 8) = 0 
rt_sigaction(SIGRT_1, {0x7f34291388f0, [], SA_RESTORER|SA_RESTART|SA_SIGINFO, 0x7f3429141f60},
NULL, 8) = 0 
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 
getrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0 
brk(0) = 0x60d000 
brk(0x62e000) = 0x62e000 
open("/usr/lib/locale/locale-archive", O_RDONLY) = 3 
fstat(3, {st_mode=S_IFREG|0644, st_size=85880592, ...}) = 0 
mmap(NULL, 85880592, PROT_READ, MAP_PRIVATE, 3, 0) = 0x7f3423f4c000 
close(3) = 0 
open("testfile", O_WRONLY|O_CREAT|O_NOCTTY|O_NONBLOCK, 0666) = -1 ENOSPC (No space left
on device) 
futimesat(AT_FDCWD, "testfile", NULL) = -1 ENOENT (No such file or directory) 
open("/usr/share/locale/locale.alias", O_RDONLY) = 3 
fstat(3, {st_mode=S_IFREG|0644, st_size=2570, ...}) = 0 
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f3429ad2000

read(3, "# Locale name alias data base.\n# "..., 4096) = 2570 
read(3, ""..., 4096) = 0 
close(3) = 0 
munmap(0x7f3429ad2000, 4096) = 0 
open("/usr/share/locale/en_US.UTF-8/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT
(No such file or directory) 
open("/usr/share/locale/en_US.utf8/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT
(No such file or directory) 
open("/usr/share/locale/en_US/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such
file or directory) 
open("/usr/share/locale/en.UTF-8/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No
such file or directory) 
open("/usr/share/locale/en.utf8/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No
such file or directory) 
open("/usr/share/locale/en/LC_MESSAGES/coreutils.mo", O_RDONLY) = -1 ENOENT (No such
file or directory) 
write(2, "touch: "..., 7touch: ) = 7 
write(2, "cannot touch `testfile'"..., 23cannot touch `testfile') = 23 
open("/usr/share/locale/en_US.UTF-8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No
such file or directory) 
open("/usr/share/locale/en_US.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such
file or directory) 
open("/usr/share/locale/en_US/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file
or directory) 
open("/usr/share/locale/en.UTF-8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such
file or directory) 
open("/usr/share/locale/en.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such
file or directory) 
open("/usr/share/locale/en/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file
or directory) 
write(2, ": No space left on device"..., 25: No space left on device) = 25 
write(2, "\n"..., 1 
) = 1 
close(1) = 0 
close(2) = 0 
exit_group(1) = ? 


Any thoughts as I have checked the host system and that looks absolutely fine; and so
are the other vservers. Weird! :) 
-- 
Thanks, Phil 



Hello all,

we are seeing a strange issue where one of our vserver guests is reporting that its file system is full yet there is plenty of space:

usera:/var/run# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/hdv1            1008G  187G  812G  19% /
none                  128M     0  128M   0% /tmp
usera:/var/run# touch testfile
touch: cannot touch `testfile': No space left on device

Below is a strace -f when running the touch testfile command:

usera:/var/run# strace -f touch testfile
execve("/usr/bin/touch", ["touch", "testfile"], [/* 28 vars */]) = 0
brk(0)                                  = 0x60d000
access("/etc/ld.so.nohwcap", F OK)      = -1 ENOENT (No such file or directory)
mmap(NULL, 8192, PROT READ|PROT WRITE, MAP PRIVATE|MAP ANONYMOUS, -1, 0) = 0x7f3429ad3000
access("/etc/ld.so.preload", R OK)      = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O RDONLY)      = 3
fstat(3, {st mode=S IFREG|0644, st size=153901, ...}) = 0
mmap(NULL, 153901, PROT READ, MAP PRIVATE, 3, 0) = 0x7f3429aad000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F OK)      = -1 ENOENT (No such file or directory)
open("/lib/librt.so.1", O RDONLY)       = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\220!\0\0\0\0\0\0@"..., 832) = 832
fstat(3, {st mode=S IFREG|0644, st size=31744, ...}) = 0
mmap(NULL, 2128848, PROT READ|PROT EXEC, MAP PRIVATE|MAP DENYWRITE, 3, 0) = 0x7f34296b0000
mprotect(0x7f34296b7000, 2093056, PROT NONE) = 0
mmap(0x7f34298b6000, 8192, PROT READ|PROT WRITE, MAP PRIVATE|MAP FIXED|MAP DENYWRITE, 3, 0x6000) = 0x7f34298b6000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F OK)      = -1 ENOENT (No such file or directory)
open("/lib/libc.so.6", O RDONLY)        = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`\355\1\0\0\0\0\0@"..., 832) = 832
fstat(3, {st mode=S IFREG|0755, st size=1432968, ...}) = 0
mmap(NULL, 3541032, PROT READ|PROT EXEC, MAP PRIVATE|MAP DENYWRITE, 3, 0) = 0x7f342934f000
mprotect(0x7f34294a7000, 2093056, PROT NONE) = 0
mmap(0x7f34296a6000, 20480, PROT READ|PROT WRITE, MAP PRIVATE|MAP FIXED|MAP DENYWRITE, 3, 0x157000) = 0x7f34296a6000
mmap(0x7f34296ab000, 18472, PROT READ|PROT WRITE, MAP PRIVATE|MAP FIXED|MAP ANONYMOUS, -1, 0) = 0x7f34296ab000
close(3)                                = 0
access("/etc/ld.so.nohwcap", F OK)      = -1 ENOENT (No such file or directory)
open("/lib/libpthread.so.0", O RDONLY)  = 3
read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\340Y\0\0\0\0\0\0@"..., 832) = 832
fstat(3, {st mode=S IFREG|0755, st size=131260, ...}) = 0
mmap(NULL, 4096, PROT READ|PROT WRITE, MAP PRIVATE|MAP ANONYMOUS, -1, 0) = 0x7f3429aac000
mmap(NULL, 2208640, PROT READ|PROT EXEC, MAP PRIVATE|MAP DENYWRITE, 3, 0) = 0x7f3429133000
mprotect(0x7f342914a000, 2093056, PROT NONE) = 0
mmap(0x7f3429349000, 8192, PROT READ|PROT WRITE, MAP PRIVATE|MAP FIXED|MAP DENYWRITE, 3, 0x16000) = 0x7f3429349000
mmap(0x7f342934b000, 13184, PROT READ|PROT WRITE, MAP PRIVATE|MAP FIXED|MAP ANONYMOUS, -1, 0) = 0x7f342934b000
close(3)                                = 0
mmap(NULL, 4096, PROT READ|PROT WRITE, MAP PRIVATE|MAP ANONYMOUS, -1, 0) = 0x7f3429aab000
mmap(NULL, 4096, PROT READ|PROT WRITE, MAP PRIVATE|MAP ANONYMOUS, -1, 0) = 0x7f3429aaa000
arch prctl(ARCH SET FS, 0x7f3429aab700) = 0
open("/dev/urandom", O RDONLY)          = 3
read(3, "\270 f\37!\232;"..., 7)        = 7
close(3)                                = 0
mprotect(0x7f3429349000, 4096, PROT READ) = 0
mprotect(0x7f34296a6000, 16384, PROT READ) = 0
mprotect(0x7f34298b6000, 4096, PROT READ) = 0
mprotect(0x7f3429ad5000, 4096, PROT READ) = 0
munmap(0x7f3429aad000, 153901)          = 0
set tid address(0x7f3429aab9d0)         = 13524
set robust list(0x7f3429aab9e0, 0x18)   = 0
futex(0x7fff31ad739c, FUTEX WAKE PRIVATE, 1) = 0
futex(0x7fff31ad739c, 0x189 /* FUTEX ??? */, 1, NULL, 7f3429aab700) = -1 ENOSYS (Function not implemented)
rt sigaction(SIGRTMIN, {0x7f3429138860, [], SA RESTORER|SA SIGINFO, 0x7f3429141f60}, NULL, 8) = 0
rt sigaction(SIGRT 1, {0x7f34291388f0, [], SA RESTORER|SA RESTART|SA SIGINFO, 0x7f3429141f60}, NULL, 8) = 0
rt sigprocmask(SIG UNBLOCK, [RTMIN RT 1], NULL, 8) = 0
getrlimit(RLIMIT STACK, {rlim cur=8192*1024, rlim max=RLIM INFINITY}) = 0
brk(0)                                  = 0x60d000
brk(0x62e000)                           = 0x62e000
open("/usr/lib/locale/locale-archive", O RDONLY) = 3
fstat(3, {st mode=S IFREG|0644, st size=85880592, ...}) = 0
mmap(NULL, 85880592, PROT READ, MAP PRIVATE, 3, 0) = 0x7f3423f4c000
close(3)                                = 0
open("testfile", O WRONLY|O CREAT|O NOCTTY|O NONBLOCK, 0666) = -1 ENOSPC (No space left on device)
futimesat(AT FDCWD, "testfile", NULL)   = -1 ENOENT (No such file or directory)
open("/usr/share/locale/locale.alias", O RDONLY) = 3
fstat(3, {st mode=S IFREG|0644, st size=2570, ...}) = 0
mmap(NULL, 4096, PROT READ|PROT WRITE, MAP PRIVATE|MAP ANONYMOUS, -1, 0) = 0x7f3429ad2000
read(3, "# Locale name alias data base.\n# "..., 4096) = 2570
read(3, ""..., 4096)                    = 0
close(3)                                = 0
munmap(0x7f3429ad2000, 4096)            = 0
open("/usr/share/locale/en US.UTF-8/LC MESSAGES/coreutils.mo", O RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en US.utf8/LC MESSAGES/coreutils.mo", O RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en US/LC MESSAGES/coreutils.mo", O RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en.UTF-8/LC MESSAGES/coreutils.mo", O RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en.utf8/LC MESSAGES/coreutils.mo", O RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en/LC MESSAGES/coreutils.mo", O RDONLY) = -1 ENOENT (No such file or directory)
write(2, "touch: "..., 7touch: )               = 7
write(2, "cannot touch `testfile'"..., 23cannot touch `testfile') = 23
open("/usr/share/locale/en US.UTF-8/LC MESSAGES/libc.mo", O RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en US.utf8/LC MESSAGES/libc.mo", O RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en US/LC MESSAGES/libc.mo", O RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en.UTF-8/LC MESSAGES/libc.mo", O RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en.utf8/LC MESSAGES/libc.mo", O RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/share/locale/en/LC MESSAGES/libc.mo", O RDONLY) = -1 ENOENT (No such file or directory)
write(2, ": No space left on device"..., 25: No space left on device) = 25
write(2, "\n"..., 1
)                    = 1
close(1)                                = 0
close(2)                                = 0
exit group(1)                           = ?

Any thoughts as I have checked the host system and that looks absolutely fine; and so are the other vservers. Weird! :)
--
Thanks, Phil