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Date:      Thu, 27 Sep 2012 12:26:50 -0700
From:      =?ISO-8859-1?Q?Gezeala_M=2E_Bacu=F1o_II?= <gezeala@gmail.com>
To:        Olivier Smedts <olivier@gid0.org>
Cc:        freebsd-fs@freebsd.org
Subject:   Re: how to access ZFS snapshot via iSCSI
Message-ID:  <CAJKO3mX6DB0Mp=%2By5P0ZmeqKmC3STk18OS%2BtSuK2rFSfCxOaDg@mail.gmail.com>
In-Reply-To: <CABzXLYMKi9O-xwdP5rNkknq37LVznf6ZSvMVUmnJLz=hGrOkPg@mail.gmail.com>
References:  <20120926173700.29600@relay.ibs.dn.ua> <CABzXLYMKi9O-xwdP5rNkknq37LVznf6ZSvMVUmnJLz=hGrOkPg@mail.gmail.com>

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On Thu, Sep 27, 2012 at 6:57 AM, Olivier Smedts <olivier@gid0.org> wrote:
> 2012/9/26 Zeus Panchenko <zeus@ibs.dn.ua>:
>> hi all,
>>
>> please, may somebody advice, can I access ZFS snapshot via iSCSI?
>>
>> I do can get access to ZFS filesystem and zvol, but how to access ZFS snapshot?
>>
>> I am trying that via istgt, in istgt.conf I put:
>>
>> [LogicalUnit4]
>>   Comment "ZVOL 500Gb to test"
>>   TargetName zvol-totest
>>   Mapping PortalGroup1 InitiatorGroup1
>>   AuthMethod Auto
>>   AuthGroup AuthGroup1
>>   UseDigest Auto
>>   UnitType Disk
>>   QueueDepth 64
>>   LUN0 Storage /dev/zvol/storage/win/zvol-totest Auto
>>
>> and I can mount it and use
>>
>> when I put
>>
>> [LogicalUnit5]
>>   Comment "snapshot of ZVOL 500Gb totest"
>>   TargetName zvol-totest-snapshot
>>   Mapping PortalGroup1 InitiatorGroup1
>>   AuthMethod Auto
>>   AuthGroup AuthGroup1
>>   UseDigest Auto
>>   UnitType Disk
>>   QueueDepth 64
>>   LUN0 Storage /dev/zvol/storage/win/zvol-totest@hourly-2012-09-26-11 Auto
>
> Can you set a read-only access in this config file ? Maybe istgt tries
> to open the volume read-write but it can't because it's a snapshot.
>
> --
> Olivier Smedts                                                 _
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Try adding "ReadOnly Yes" option on LogicalUnit.

[LogicalUnit5]
...
ReadOnly Yes
...



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