I merged this fix of icehouse then found one issue, I can still download file when use filesystem://, while I cannot delete file. When use file:// it looks working fine.

[<email address hidden>] /etc # glance image-create --disk-format raw --container-format bare 
+------------------+--------------------------------------+
| Property         | Value                                |
+------------------+--------------------------------------+
| checksum         | None                                 |
| container_format | bare                                 |
| created_at       | 2015-01-07T00:28:17                  |
| deleted          | False                                |
| deleted_at       | None                                 |
| disk_format      | raw                                  |
| id               | c0294cd0-e971-4dc3-a4f4-63bb06427233 |
| is_public        | False                                |
| min_disk         | 0                                    |
| min_ram          | 0                                    |
| name             | None                                 |
| owner            | f28900596cdd4002b8a0a94599656857     |
| protected        | False                                |
| size             | 0                                    |
| status           | queued                               |
| updated_at       | 2015-01-07T00:28:17                  |
| virtual_size     | None                                 |
+------------------+--------------------------------------+
[<email address hidden>] /etc # 
[<email address hidden>] /etc # glance image-update --location filesystem:///etc/passwd c0294cd0-e971-4dc3-a4f4-63bb06427233
+------------------+--------------------------------------+
| Property         | Value                                |
+------------------+--------------------------------------+
| checksum         | None                                 |
| container_format | bare                                 |
| created_at       | 2015-01-07T00:28:17                  |
| deleted          | False                                |
| deleted_at       | None                                 |
| disk_format      | raw                                  |
| id               | c0294cd0-e971-4dc3-a4f4-63bb06427233 |
| is_public        | False                                |
| min_disk         | 0                                    |
| min_ram          | 0                                    |
| name             | None                                 |
| owner            | f28900596cdd4002b8a0a94599656857     |
| protected        | False                                |
| size             | 2292                                 |
| status           | active                               |
| updated_at       | 2015-01-07T00:28:32                  |
| virtual_size     | None                                 |
+------------------+--------------------------------------+
[<email address hidden>] /etc # glance image-list
+--------------------------------------+---------+-------------+------------------+-----------+--------+
| ID                                   | Name    | Disk Format | Container Format | Size      | Status |
+--------------------------------------+---------+-------------+------------------+-----------+--------+
| 083143af-3d96-48c3-9f09-408e3c0d643f |         | raw         | bare             |           | active |
| c0294cd0-e971-4dc3-a4f4-63bb06427233 |         | raw         | bare             | 2292      | active |
| b651832a-e4e3-403d-80d5-47fc06302f83 | cirros  | raw         | bare             | 9761280   | active |
| d135b755-98d7-4fb2-83c3-670dcec5986b | jin6    | raw         | bare             | 2340      | active |
| 9046248a-3dd6-48e4-95d5-f89d7ad3378e | precise | raw         | bare             | 253165568 | active |
+--------------------------------------+---------+-------------+------------------+-----------+--------+
[<email address hidden>] /etc # glance image-download c0294cd0-e971-4dc3-a4f4-63bb06427233
root:x:0:0:root:/root:/bin/bash
daemon:x:1:1:daemon:/usr/sbin:/bin/sh
bin:x:2:2:bin:/bin:/bin/sh
sys:x:3:3:sys:/dev:/bin/sh
sync:x:4:65534:sync:/bin:/bin/sync
games:x:5:60:games:/usr/games:/bin/sh
man:x:6:12:man:/var/cache/man:/bin/sh
lp:x:7:7:lp:/var/spool/lpd:/bin/sh
mail:x:8:8:mail:/var/mail:/bin/sh
news:x:9:9:news:/var/spool/news:/bin/sh
uucp:x:10:10:uucp:/var/spool/uucp:/bin/sh
proxy:x:13:13:proxy:/bin:/bin/sh
www-data:x:33:33:www-data:/var/www:/bin/sh
backup:x:34:34:backup:/var/backups:/bin/sh
list:x:38:38:Mailing List Manager:/var/list:/bin/sh
irc:x:39:39:ircd:/var/run/ircd:/bin/sh
gnats:x:41:41:Gnats Bug-Reporting System (admin):/var/lib/gnats:/bin/sh
nobody:x:65534:65534:nobody:/nonexistent:/bin/sh
libuuid:x:100:101::/var/lib/libuuid:/bin/sh
syslog:x:101:103::/home/syslog:/bin/false
ubuntu:x:1000:1000:Ubuntu,,,:/home/ubuntu:/bin/bash
cloudscaling:x:30000:30000::/home/cloudscaling:/bin/bash
sshd:x:102:65534::/var/run/sshd:/usr/sbin/nologin
messagebus:x:103:106::/var/run/dbus:/bin/false
apt-cacher-ng:x:104:108::/var/cache/apt-cacher-ng:/bin/false
ntp:x:105:109::/home/ntp:/bin/false
rethinkdb:x:106:110::/home/rethinkdb:/bin/false
bind:x:107:111::/var/cache/bind:/bin/false
memcache:x:108:112:Memcached,,,:/nonexistent:/bin/false
substratum:x:999:999::/srv/substratum:/bin/bash
nslcd:x:109:113:nslcd name service LDAP connection daemon,,,:/var/run/nslcd/:/bin/false
riemann:x:998:998:Riemann monitoring system:/usr/share/riemann:/bin/false
haproxy:x:110:114::/var/lib/haproxy:/bin/false
openldap:x:111:115:OpenLDAP Server Account,,,:/var/lib/ldap:/bin/false
quagga:x:112:117:Quagga routing suite,,,:/var/run/quagga/:/bin/false
rabbitmq:x:113:118:RabbitMQ messaging server,,,:/var/lib/rabbitmq:/bin/false
elasticsearch:x:114:119::/usr/share/elasticsearch:/bin/false
logstash:x:997:997:LogStash Service User:/var/lib/logstash:/sbin/nologin
mysql:x:115:120:MySQL Server,,,:/var/lib/mysql:/bin/false
nova:x:116:121::/var/lib/nova:/bin/bash
keystone:x:117:122::/var/lib/keystone:/bin/false
glance:x:118:124::/var/lib/glance:/bin/false
swift:x:119:125::/home/swift:/bin/false
cinder:x:120:126::/var/lib/cinder:/bin/bash
horizon:x:121:127::/usr/share/openstack-dashboard/:/bin/false
heat:x:122:128::/var/lib/heat:/bin/bash
ceilometer:x:123:129::/var/lib/ceilometer:/bin/false
[<email address hidden>] /etc # 
[<email address hidden>] /etc # ls -l passwd
-rw-r--r-- 1 root root 2292 Jan  6 22:40 passwd
[<email address hidden>] /etc # 
[<email address hidden>] /etc # glance image-create --disk-format raw --container-format bare 
+------------------+--------------------------------------+
| Property         | Value                                |
+------------------+--------------------------------------+
| checksum         | None                                 |
| container_format | bare                                 |
| created_at       | 2015-01-07T00:29:49                  |
| deleted          | False                                |
| deleted_at       | None                                 |
| disk_format      | raw                                  |
| id               | f93c6150-19c3-4a0f-888e-d90f7c0343d3 |
| is_public        | False                                |
| min_disk         | 0                                    |
| min_ram          | 0                                    |
| name             | None                                 |
| owner            | f28900596cdd4002b8a0a94599656857     |
| protected        | False                                |
| size             | 0                                    |
| status           | queued                               |
| updated_at       | 2015-01-07T00:29:49                  |
| virtual_size     | None                                 |
+------------------+--------------------------------------+
[<email address hidden>] /etc # glance image-update --location file:///etc/passwd f93c6150-19c3-4a0f-888e-d90f7c0343d3
Request returned failure status.
400 Bad Request
External source are not supported: 'file:///etc/passwd'
    (HTTP 400)
[<email address hidden>] /etc # 
[<email address hidden>] /tmp # glance image-create --disk-format raw --container-format bare 
+------------------+--------------------------------------+
| Property         | Value                                |
+------------------+--------------------------------------+
| checksum         | None                                 |
| container_format | bare                                 |
| created_at       | 2015-01-07T17:47:49                  |
| deleted          | False                                |
| deleted_at       | None                                 |
| disk_format      | raw                                  |
| id               | c4aefce8-a56d-4e3a-8fd0-6ade9d42153d |
| is_public        | False                                |
| min_disk         | 0                                    |
| min_ram          | 0                                    |
| name             | None                                 |
| owner            | f28900596cdd4002b8a0a94599656857     |
| protected        | False                                |
| size             | 0                                    |
| status           | queued                               |
| updated_at       | 2015-01-07T17:47:49                  |
| virtual_size     | None                                 |
+------------------+--------------------------------------+
[<email address hidden>] /tmp # glance image-update --location filesystem:///tmp/jffi3904658308519745007.tmp c4aefce8-a56d-4e3a-8fd0-6ade9d42153d
+------------------+--------------------------------------+
| Property         | Value                                |
+------------------+--------------------------------------+
| checksum         | None                                 |
| container_format | bare                                 |
| created_at       | 2015-01-07T17:47:49                  |
| deleted          | False                                |
| deleted_at       | None                                 |
| disk_format      | raw                                  |
| id               | c4aefce8-a56d-4e3a-8fd0-6ade9d42153d |
| is_public        | False                                |
| min_disk         | 0                                    |
| min_ram          | 0                                    |
| name             | None                                 |
| owner            | f28900596cdd4002b8a0a94599656857     |
| protected        | False                                |
| size             | 90382                                |
| status           | active                               |
| updated_at       | 2015-01-07T17:48:15                  |
| virtual_size     | None                                 |
+------------------+--------------------------------------+
[<email address hidden>] /tmp # glance image-delete c4aefce8-a56d-4e3a-8fd0-6ade9d42153d
Request returned failure status.
403 Forbidden
Forbidden to delete image: You cannot delete file /tmp/jffi3904658308519745007.tmp
    (HTTP 403): Unable to delete image c4aefce8-a56d-4e3a-8fd0-6ade9d42153d
[<email address hidden>] /tmp # ls -l /tmp/jffi3904658308519745007.tmp
-rw-r--r-- 1 logstash logstash 90382 Jan  6 22:41 /tmp/jffi3904658308519745007.tmp