zfs discuss - Nov 2008 - zfs (u)mount conundrum with non-existent mountpoint

all,

I''ve gotten myself into a fix I don''t know how to resolve (and
I can''t
reboot the machine, it''s a build server we share):

$ zfs list -r tank/schuster
NAME                          USED  AVAIL  REFER  MOUNTPOINT
tank/schuster                17.6G   655G  5.83G  /exportz/schuster
tank/schuster/ilb            5.72G   655G  5.72G  /exportz/schuster/ilb
tank/schuster/ip_wput_local  6.06G   655G  6.06G 
/exportz/schuster/ip_wput_local

note the 2nd one.

$ ls -las /exportz/schuster/
total 20
    4 drwxr-xr-x   5 schuster staff          5 Nov  6 09:38 .
    4 drwxrwxrwt  15 ml37995  staff         15 Sep 28 05:21 ..
    4 drwxr-xr-x   9 schuster staff         12 Nov  6 08:46 ilb_hg
    4 drwxr-xr-x   8 schuster staff         12 Oct 31 10:07 ip_wput_local
    4 drwxr-xr-x   9 schuster staff         11 Sep 11 13:06 old_ilb
$

oops, no "ilb/" subdirectory.

$ zfs mount | grep schuster
tank/schuster                   /exportz/schuster
tank/schuster/ilb               /exportz/schuster/ilb
tank/schuster/ip_wput_local     /exportz/schuster/ip_wput_local
$  mount | grep schuster
/exportz/schuster on tank/schuster ...
/exportz/schuster/ilb on tank/schuster/ilb ...
/exportz/schuster/ip_wput_local on tank/schuster/ip_wput_local ...
$

I''ve tried creating an ilb subdir, as well as "set
mountpoint"ing, all to
no avail, so far; "zfs unmount" also fails, even with -f.
I''ve unshared the
FS, still no luck, as with "zfs rename".

I don''t want to "zfs destroy" tank/schuster/ilb before
I''ve had a chance to
check what''s inside ...

this is snv_89, btw. zfs and zpool are at current revisions (3 and 10, resp.).

does anyone have any hints what I could do to solve this?

TIA
Michael
-- 
Michael Schuster        http://blogs.sun.com/recursion
Recursion, n.: see ''Recursion''

Hi Michael,

Did you try doing an export/import of tank?

On Thu, 6 Nov 2008, Michael Schuster wrote:
> all,
>
> I''ve gotten myself into a fix I don''t know how to resolve
(and I can''t
> reboot the machine, it''s a build server we share):
>
> $ zfs list -r tank/schuster
> NAME                          USED  AVAIL  REFER  MOUNTPOINT
> tank/schuster                17.6G   655G  5.83G  /exportz/schuster
> tank/schuster/ilb            5.72G   655G  5.72G  /exportz/schuster/ilb
> tank/schuster/ip_wput_local  6.06G   655G  6.06G
> /exportz/schuster/ip_wput_local
>
> note the 2nd one.
>
> $ ls -las /exportz/schuster/
> total 20
>    4 drwxr-xr-x   5 schuster staff          5 Nov  6 09:38 .
>    4 drwxrwxrwt  15 ml37995  staff         15 Sep 28 05:21 ..
>    4 drwxr-xr-x   9 schuster staff         12 Nov  6 08:46 ilb_hg
>    4 drwxr-xr-x   8 schuster staff         12 Oct 31 10:07 ip_wput_local
>    4 drwxr-xr-x   9 schuster staff         11 Sep 11 13:06 old_ilb
> $
>
> oops, no "ilb/" subdirectory.
>
> $ zfs mount | grep schuster
> tank/schuster                   /exportz/schuster
> tank/schuster/ilb               /exportz/schuster/ilb
> tank/schuster/ip_wput_local     /exportz/schuster/ip_wput_local
> $  mount | grep schuster
> /exportz/schuster on tank/schuster ...
> /exportz/schuster/ilb on tank/schuster/ilb ...
> /exportz/schuster/ip_wput_local on tank/schuster/ip_wput_local ...
> $
>
> I''ve tried creating an ilb subdir, as well as "set
mountpoint"ing, all to
> no avail, so far; "zfs unmount" also fails, even with -f.
I''ve unshared the
> FS, still no luck, as with "zfs rename".
>
> I don''t want to "zfs destroy" tank/schuster/ilb before
I''ve had a chance to
> check what''s inside ...
>
> this is snv_89, btw. zfs and zpool are at current revisions (3 and 10,
resp.).
>
> does anyone have any hints what I could do to solve this?
>
> TIA
> Michael
> --
> Michael Schuster        http://blogs.sun.com/recursion
> Recursion, n.: see ''Recursion''
> _______________________________________________
> zfs-discuss mailing list
> zfs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
>

Regards,
markm

Mark J Musante wrote:
> 
> Hi Michael,
> 
> Did you try doing an export/import of tank?
no - that would make it unavailable for use right? I don''t think I can 
(easily) do that during production hours.

Michael
-- 
Michael Schuster        http://blogs.sun.com/recursion
Recursion, n.: see ''Recursion''

On Thu, Nov 6, 2008 at 8:22 PM, Michael Schuster
<Michael.Schuster at sun.com>wrote:
> Mark J Musante wrote:
> >
> > Hi Michael,
> >
> > Did you try doing an export/import of tank?
>
> no - that would make it unavailable for use right? I don''t think I
can
> (easily) do that during production hours.
>
Can you please post the output from:
zfs get all tank/schuster/ilb





-- 
Any sufficiently advanced technology is indistinguishable from magic.
   Arthur C. Clarke

My blog: http://initialprogramload.blogspot.com
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Johan Hartzenberg wrote:
> 
> 
> On Thu, Nov 6, 2008 at 8:22 PM, Michael Schuster 
> <Michael.Schuster at sun.com <mailto:Michael.Schuster at
sun.com>> wrote:
> 
>     Mark J Musante wrote:
>      >
>      > Hi Michael,
>      >
>      > Did you try doing an export/import of tank?
> 
>     no - that would make it unavailable for use right? I don''t
think I can
>     (easily) do that during production hours.
> 
> 
> Can you please post the output from:
> zfs get all tank/schuster/ilb
NAME               PROPERTY         VALUE                  SOURCE
tank/schuster/ilb  type             filesystem             -
tank/schuster/ilb  creation         Tue Sep  2 15:57 2008  -
tank/schuster/ilb  used             5.72G                  -
tank/schuster/ilb  available        662G                   -
tank/schuster/ilb  referenced       5.72G                  -
tank/schuster/ilb  compressratio    2.10x                  -
tank/schuster/ilb  mounted          yes                    -
tank/schuster/ilb  quota            none                   default
tank/schuster/ilb  reservation      none                   default
tank/schuster/ilb  recordsize       128K                   default
tank/schuster/ilb  mountpoint       /exportz/schuster/ilb  inherited from tank
tank/schuster/ilb  sharenfs         off                    local
tank/schuster/ilb  checksum         on                     default
tank/schuster/ilb  compression      on                     inherited from tank
tank/schuster/ilb  atime            on                     default
tank/schuster/ilb  devices          on                     default
tank/schuster/ilb  exec             on                     default
tank/schuster/ilb  setuid           on                     default
tank/schuster/ilb  readonly         off                    default
tank/schuster/ilb  zoned            off                    default
tank/schuster/ilb  snapdir          hidden                 default
tank/schuster/ilb  aclmode          groupmask              default
tank/schuster/ilb  aclinherit       restricted             default
tank/schuster/ilb  canmount         on                     default
tank/schuster/ilb  shareiscsi       off                    default
tank/schuster/ilb  xattr            on                     default
tank/schuster/ilb  copies           1                      default
tank/schuster/ilb  version          3                      -
tank/schuster/ilb  utf8only         off                    -
tank/schuster/ilb  normalization    none                   -
tank/schuster/ilb  casesensitivity  sensitive              -
tank/schuster/ilb  vscan            off                    default
tank/schuster/ilb  nbmand           off                    default
tank/schuster/ilb  sharesmb         off                    default
tank/schuster/ilb  refquota         none                   default
tank/schuster/ilb  refreservation   none                   default
-- 
Michael Schuster        http://blogs.sun.com/recursion
Recursion, n.: see ''Recursion''