misc/172349: Samba previous versions (vfs shadow_copy2) does not
work with SMB2 enabled
Eric Dombroski
eric at edombroski.com
Fri Oct 5 03:40:20 UTC 2012
>Number: 172349
>Category: misc
>Synopsis: Samba previous versions (vfs shadow_copy2) does not work with SMB2 enabled
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Oct 05 03:40:18 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator: Eric Dombroski
>Release: 9.0-RELEASE-p4
>Organization:
>Environment:
FreeBSD umaro 9.0-RELEASE-p3 FreeBSD 9.0-RELEASE-p3 #0: Tue Jun 12 02:52:29 UTC 2012 root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
It appears with Samba 3.6.7 the shadow_copy2 VFS module (enabling "Previous Versions" support in Windows) does not function properly when SMB2 is enabled ("max protocol = SMB2"), at least when used ontop of ZFS with the zfsacl module.
/usr/local/etc/smb.conf (works - Previous Versions are viewable via Windows 7):
[global]
workgroup = WORKGROUP
security = user
log file = /var/log/samba/samba.log
max log size = 10000000
unix extensions = no
aio read size = 1
aio write size = 1
[homes]
comment = Home Directories
browseable = no
writable = yes
[shared]
path = /storage/shared
vfs objects = zfsacl shadow_copy2
nfs4:mode = special
nfs4:acedup = merge
nfs4:chown = yes
shadow:snapdir = .zfs/snapshot
shadow:format = %Y.%m.%d-%H.%M
shadow:sort = desc
shadow:localtime = yes
writeable = yes
nt acl support = yes
map acl inherit = yes
inherit permissions = yes
inherit acls = yes
inherit owner = yes
acl map full control = true
follow symlinks = yes
wide links = yes
veto files = /.zfs/
hide files = /Desktop.ini/Thumbs.db/
map readonly = no
map archive = no
map hidden = no
map system = no
Doesn't work:
[global]
workgroup = WORKGROUP
security = user
log file = /var/log/samba/samba.log
max log size = 10000000
unix extensions = no
aio read size = 1
aio write size = 1
#seems to break previous versions
max protocol = SMB2
[homes]
comment = Home Directories
browseable = no
writable = yes
[shared]
path = /storage/shared
vfs objects = zfsacl shadow_copy2
nfs4:mode = special
nfs4:acedup = merge
nfs4:chown = yes
shadow:snapdir = .zfs/snapshot
shadow:format = %Y.%m.%d-%H.%M
shadow:sort = desc
shadow:localtime = yes
writeable = yes
nt acl support = yes
map acl inherit = yes
inherit permissions = yes
inherit acls = yes
inherit owner = yes
acl map full control = true
follow symlinks = yes
wide links = yes
veto files = /.zfs/
hide files = /Desktop.ini/Thumbs.db/
map readonly = no
map archive = no
map hidden = no
map system = no
ZFS info:
umaro# zfs get all storage/shared
NAME PROPERTY VALUE SOURCE
storage/shared type filesystem -
storage/shared creation Sun Oct 14 16:12 2012 -
storage/shared used 134G -
storage/shared available 10.5T -
storage/shared referenced 126G -
storage/shared compressratio 1.00x -
storage/shared mounted yes -
storage/shared quota none default
storage/shared reservation none default
storage/shared recordsize 128K default
storage/shared mountpoint /storage/shared default
storage/shared sharenfs off local
storage/shared checksum on default
storage/shared compression off default
storage/shared atime on default
storage/shared devices on default
storage/shared exec on default
storage/shared setuid on default
storage/shared readonly off default
storage/shared jailed off default
storage/shared snapdir visible local
storage/shared aclmode passthrough local
storage/shared aclinherit passthrough local
storage/shared canmount on default
storage/shared xattr off temporary
storage/shared copies 1 default
storage/shared version 5 -
storage/shared utf8only off -
storage/shared normalization none -
storage/shared casesensitivity sensitive -
storage/shared vscan off default
storage/shared nbmand off default
storage/shared sharesmb off default
storage/shared refquota none default
storage/shared refreservation none default
storage/shared primarycache all default
storage/shared secondarycache all default
storage/shared usedbysnapshots 8.17G -
storage/shared usedbydataset 126G -
storage/shared usedbychildren 0 -
storage/shared usedbyrefreservation 0 -
storage/shared logbias latency default
storage/shared dedup off default
storage/shared mlslabel -
storage/shared sync standard default
storage/shared refcompressratio 1.00x -
>How-To-Repeat:
Enable previous versions support in smb.conf:
vfs objects = shadow_copy2
shadow:snapdir = .zfs/snapshot
shadow:format = %Y.%m.%d-%H.%M
shadow.sort = desc
shadow.localtime = yes
And also enable SMB2:
max protocol = SMB2
Commenting out max protocol = SMB2, and restarting the 'Workstation' service on the client switches it to use SMB1, and the previous versions show up. At least for me.
I don't have much more time to look into this at the moment, but I thought I might at least report it.
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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