Re: [zfs-discuss] gaining access to var from a live cd

2011-11-30 Thread Cindy Swearingen

Hi Francois,

A similar recovery process in OS11 is to just mount the BE,
like this:

# beadm mount s11_175 /mnt
# ls /mnt/var
adm croninetlogadm  preservetmp
ai  db  infomailrun tpm
apache2 dhcpinstalladm  nfs sadmuser
audit   dt  krb5ntp samba   xauth
cache   fm  ld  ocm smb yp
coherence   fps ldapopenldapspool
cores   games   lib opt statmon
crash   idmap   log pkg svc
# beadm umount /mnt

It took me awhile to figure out the revised recovery steps without
failsafe mode, but its something like this:

1. Boot single-user mode for some minor recovery, like bad root
shell
2. Boot from media and import the root pool to fix boot-related
issues
3. Boot from media and mount the BE to fix root password

Thanks,

Cindy

On 11/29/11 16:12, Francois Dion wrote:

In the end what I needed to do was to set the mountpoint with:

zfs set mountpoint=/tmp/rescue rpool/ROOT/openindiana

it ended up mounting it in /mnt/rpool/tmp/rescue but still, it gave me
the access to var/ld/... and after removing the ld.config, doing a
zpool export and reboot, my desktop is back.

Thanks for the pointers. man zfs did mention mountpoint as a valid
option, not sure why it didnt work. as for mount -F zfs... it only
works on legacy.

On 11/29/11, Mike Gerdtsmger...@gmail.com  wrote:

On Tue, Nov 29, 2011 at 4:40 PM, Francois Dionfrancois.d...@gmail.com
wrote:

It is on openindiana 151a, no separate /var as far as But I'll have to
test this on solaris11 too when I get a chance.

The problem is that if I

zfs mount -o mountpoint=/tmp/rescue (or whatever) rpool/ROOT/openindiana

i get a cannot mount /mnt/rpool: directory is not empty.

The reason for that is that I had to do a zpool import -R /mnt/rpool
rpool (or wherever I mount it it doesnt matter) before I could do a
zfs mount, else I dont have access to the rpool zpool for zfs to do
its thing.

chicken / egg situation? I miss the old fail safe boot menu...


You can mount it pretty much anywhere:

mkdir /tmp/foo
zfs mount -o mountpoint=/tmp/foo ...

I'm not sure when the temporary mountpoint option (-o mountpoint=...)
came in. If it's not valid syntax then:

mount -F zfs rpool/ROOT/solaris /tmp/foo

--
Mike Gerdts
http://mgerdts.blogspot.com/


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Re: [zfs-discuss] gaining access to var from a live cd

2011-11-29 Thread Mike Gerdts
On Tue, Nov 29, 2011 at 3:01 PM, Francois Dion francois.d...@gmail.com wrote:
 I've hit an interesting (not) problem. I need to remove a problematic
 ld.config file (due to an improper crle...) to boot my laptop. This is
 OI 151a, but fundamentally this is zfs, so i'm asking here.

 what I did after booting the live cd and su:
 mkdir /tmp/disk
 zpool import -R /tmp/disk -f rpool

 export shows up in there and rpool also, but in rpool there is only
 boot and etc.

 zfs list shows rpool/ROOT/openindiana as mounted on /tmp/disk and I
 see dump and swap, but no var. rpool/ROOT shows as legacy, so I
 figured, maybe mount that.

 mount -F zfs rpool/ROOT /mnt/rpool

That dataset (rpool/ROOT) should never have any files in it.  It is
just a container for boot environments.  You can see which boot
environments exist with:

zfs list -r rpool/ROOT

If you are running Solaris 11, the boot environment's root dataset
will show a mountpoint property value of /.  Assuming it is called
solaris you can mount it with:

zfs mount -o mountpoint=/mnt/rpool rpool/ROOT/solaris

If the system is running Solaris 11 (and was not updated from Solaris
11 Express), it will have a separate /var dataset.

zfs mount -o mountpoint=/mnt/rpool/var rpool/ROOT/solaris/var

-- 
Mike Gerdts
http://mgerdts.blogspot.com/
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Re: [zfs-discuss] gaining access to var from a live cd

2011-11-29 Thread Francois Dion
It is on openindiana 151a, no separate /var as far as But I'll have to
test this on solaris11 too when I get a chance.

The problem is that if I

zfs mount -o mountpoint=/tmp/rescue (or whatever) rpool/ROOT/openindiana

i get a cannot mount /mnt/rpool: directory is not empty.

The reason for that is that I had to do a zpool import -R /mnt/rpool
rpool (or wherever I mount it it doesnt matter) before I could do a
zfs mount, else I dont have access to the rpool zpool for zfs to do
its thing.

chicken / egg situation? I miss the old fail safe boot menu...

On 11/29/11, Mike Gerdts mger...@gmail.com wrote:
 On Tue, Nov 29, 2011 at 3:01 PM, Francois Dion francois.d...@gmail.com
 wrote:
 I've hit an interesting (not) problem. I need to remove a problematic
 ld.config file (due to an improper crle...) to boot my laptop. This is
 OI 151a, but fundamentally this is zfs, so i'm asking here.

 what I did after booting the live cd and su:
 mkdir /tmp/disk
 zpool import -R /tmp/disk -f rpool

 export shows up in there and rpool also, but in rpool there is only
 boot and etc.

 zfs list shows rpool/ROOT/openindiana as mounted on /tmp/disk and I
 see dump and swap, but no var. rpool/ROOT shows as legacy, so I
 figured, maybe mount that.

 mount -F zfs rpool/ROOT /mnt/rpool

 That dataset (rpool/ROOT) should never have any files in it.  It is
 just a container for boot environments.  You can see which boot
 environments exist with:

 zfs list -r rpool/ROOT

 If you are running Solaris 11, the boot environment's root dataset
 will show a mountpoint property value of /.  Assuming it is called
 solaris you can mount it with:

 zfs mount -o mountpoint=/mnt/rpool rpool/ROOT/solaris

 If the system is running Solaris 11 (and was not updated from Solaris
 11 Express), it will have a separate /var dataset.

 zfs mount -o mountpoint=/mnt/rpool/var rpool/ROOT/solaris/var

 --
 Mike Gerdts
 http://mgerdts.blogspot.com/

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Re: [zfs-discuss] gaining access to var from a live cd

2011-11-29 Thread Mike Gerdts
On Tue, Nov 29, 2011 at 4:40 PM, Francois Dion francois.d...@gmail.com wrote:
 It is on openindiana 151a, no separate /var as far as But I'll have to
 test this on solaris11 too when I get a chance.

 The problem is that if I

 zfs mount -o mountpoint=/tmp/rescue (or whatever) rpool/ROOT/openindiana

 i get a cannot mount /mnt/rpool: directory is not empty.

 The reason for that is that I had to do a zpool import -R /mnt/rpool
 rpool (or wherever I mount it it doesnt matter) before I could do a
 zfs mount, else I dont have access to the rpool zpool for zfs to do
 its thing.

 chicken / egg situation? I miss the old fail safe boot menu...

You can mount it pretty much anywhere:

mkdir /tmp/foo
zfs mount -o mountpoint=/tmp/foo ...

I'm not sure when the temporary mountpoint option (-o mountpoint=...)
came in. If it's not valid syntax then:

mount -F zfs rpool/ROOT/solaris /tmp/foo

-- 
Mike Gerdts
http://mgerdts.blogspot.com/
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Re: [zfs-discuss] gaining access to var from a live cd

2011-11-29 Thread Francois Dion
In the end what I needed to do was to set the mountpoint with:

zfs set mountpoint=/tmp/rescue rpool/ROOT/openindiana

it ended up mounting it in /mnt/rpool/tmp/rescue but still, it gave me
the access to var/ld/... and after removing the ld.config, doing a
zpool export and reboot, my desktop is back.

Thanks for the pointers. man zfs did mention mountpoint as a valid
option, not sure why it didnt work. as for mount -F zfs... it only
works on legacy.

On 11/29/11, Mike Gerdts mger...@gmail.com wrote:
 On Tue, Nov 29, 2011 at 4:40 PM, Francois Dion francois.d...@gmail.com
 wrote:
 It is on openindiana 151a, no separate /var as far as But I'll have to
 test this on solaris11 too when I get a chance.

 The problem is that if I

 zfs mount -o mountpoint=/tmp/rescue (or whatever) rpool/ROOT/openindiana

 i get a cannot mount /mnt/rpool: directory is not empty.

 The reason for that is that I had to do a zpool import -R /mnt/rpool
 rpool (or wherever I mount it it doesnt matter) before I could do a
 zfs mount, else I dont have access to the rpool zpool for zfs to do
 its thing.

 chicken / egg situation? I miss the old fail safe boot menu...

 You can mount it pretty much anywhere:

 mkdir /tmp/foo
 zfs mount -o mountpoint=/tmp/foo ...

 I'm not sure when the temporary mountpoint option (-o mountpoint=...)
 came in. If it's not valid syntax then:

 mount -F zfs rpool/ROOT/solaris /tmp/foo

 --
 Mike Gerdts
 http://mgerdts.blogspot.com/

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