[Bug 272719] ufs filesystem No space left on device

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=272719

            Bug ID: 272719
           Summary: ufs filesystem No space left on device
           Product: Base System
           Version: CURRENT
          Hardware: arm64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: schakrabarti@microsoft.com

UFS filesystem giving no free inode error in Azure ARM64 preview image.
I am trying to create directory named sandbox in /datadrive, which is having
ufs fs and block device. Running truss I can get following:

[schakrabarti@arm-freebsd-schakrabarti2 /datadrive]$ truss mkdir sandbox
mmap(0x0,135168,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON,-1,0x0) =
81664290062336 (0x4a45f3000000)
mprotect(0x7b822f39e000,4096,PROT_READ)          = 0 (0x0)
issetugid()                                      = 0 (0x0)
sigfastblock(0x1,0x7b822f3afe00)                 = 0 (0x0)
open("/etc/libmap.conf",O_RDONLY|O_CLOEXEC,01)   = 3 (0x3)
fstat(3,{ mode=-rw-r--r-- ,inode=35954,size=47,blksize=32768 }) = 0 (0x0)
read(3,"# $FreeBSD$\nincludedir /usr/loc"...,47) = 47 (0x2f)
close(3)                                         = 0 (0x0)
open("/usr/local/etc/libmap.d",O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC,053)
ERR#2 'No such file or directory'
open("/var/run/ld-elf.so.hints",O_RDONLY|O_CLOEXEC,010441603537) = 3 (0x3)
read(3,"Ehnt\^A\0\0\0\M^@\0\0\0k\0\0\0\0"...,128) = 128 (0x80)
fstat(3,{ mode=-r--r--r-- ,inode=37902,size=235,blksize=32768 }) = 0 (0x0)
pread(3,"/lib:/usr/lib:/usr/lib/compat:/u"...,107,0x80) = 107 (0x6b)
close(3)                                         = 0 (0x0)
open("/lib/libc.so.7",O_RDONLY|O_CLOEXEC|O_VERIFY,010441603540) = 3 (0x3)
fstat(3,{ mode=-r--r--r-- ,inode=36538,size=1892592,blksize=32768 }) = 0 (0x0)
mmap(0x0,4096,PROT_READ,MAP_PRIVATE|MAP_PREFAULT_READ,3,0x0) = 55885151227904
(0x32d3c6965000)
mmap(0x0,4341760,PROT_NONE,MAP_GUARD,-1,0x0)     = 55885163905024
(0x32d3c757c000)
mmap(0x32d3c757c000,565248,PROT_READ,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x0)
= 55885163905024 (0x32d3c757c000)
mmap(0x32d3c7615000,1269760,PROT_READ|PROT_EXEC,MAP_PRIVATE|MAP_FIXED|MAP_NOCORE|MAP_PREFAULT_READ,3,0x89000)
= 55885164531712 (0x32d3c7615000)
mmap(0x32d3c775a000,40960,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x1be000)
= 55885165862912 (0x32d3c775a000)
mmap(0x32d3c7773000,28672,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_PREFAULT_READ,3,0x1c7000)
= 55885165965312 (0x32d3c7773000)
mmap(0x32d3c777a000,2252800,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_FIXED|MAP_ANON,-1,0x0)
= 55885165993984 (0x32d3c777a000)
munmap(0x32d3c6965000,4096)                      = 0 (0x0)
close(3)                                         = 0 (0x0)
mprotect(0x32d3c775a000,36864,PROT_READ)         = 0 (0x0)
readlink("/etc/malloc.conf",0x32d3c56a52cc,1024) ERR#2 'No such file or
directory'
issetugid()                                      = 0 (0x0)
mmap(0x0,2097152,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON|MAP_ALIGNED(21),-1,0x0)
= 81664292159488 (0x4a45f3200000)
mmap(0x0,2097152,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON|MAP_ALIGNED(12),-1,0x0)
= 81664294256640 (0x4a45f3400000)
mmap(0x0,4194304,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANON|MAP_ALIGNED(21),-1,0x0)
= 81664296353792 (0x4a45f3600000)
/datadrive: create/symlink failed, no inodes free
mkdir("sandbox",0777)                            ERR#28 'No space left on
device'
mkdir: write(2,"mkdir: ",7)                              = 7 (0x7)
sandboxwrite(2,"sandbox",7)                              = 7 (0x7)
: write(2,": ",2)                                        = 2 (0x2)
issetugid()                                      = 0 (0x0)
fstatat(AT_FDCWD,"/usr/share/nls/C/libc.cat",0x32d3c56a6470,0x0) ERR#2 'No such
file or directory'
fstatat(AT_FDCWD,"/usr/share/nls/libc/C",0x32d3c56a6470,0x0) ERR#2 'No such
file or directory'
fstatat(AT_FDCWD,"/usr/local/share/nls/C/libc.cat",0x32d3c56a6470,0x0) ERR#2
'No such file or directory'
fstatat(AT_FDCWD,"/usr/local/share/nls/libc/C",0x32d3c56a6470,0x0) ERR#2 'No
such file or directory'
No space left on device
write(2,"No space left on device\n",24)          = 24 (0x18)
exit(0x1)
process exit, rval = 1

The df output
[schakrabarti@arm-freebsd-schakrabarti2 /datadrive]$ df -h
Filesystem         Size    Used   Avail Capacity  Mounted on
/dev/gpt/rootfs     29G    3.4G     23G    13%    /
devfs              1.0K      0B    1.0K     0%    /dev
/dev/gpt/efiesp     32M    842K     31M     3%    /boot/efi
/dev/da2p1         992G    8.0K    912G     0%    /datadrive
/dev/da1p1         579G    8.0K    533G     0%    /mnt/resource
[schakrabarti@arm-freebsd-schakrabarti2 /datadrive]$ mount
/dev/gpt/rootfs on / (ufs, local, soft-updates)
devfs on /dev (devfs)
/dev/gpt/efiesp on /boot/efi (msdosfs, local)
/dev/da2p1 on /datadrive (ufs, local, soft-updates)
/dev/da1p1 on /mnt/resource (ufs, local, soft-updates)

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