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Roland Smith wrote:
> On Mon, May 28, 2007 at 05:15:19PM +1000, Ian Smith wrote:
>> I share Roland's concern about the reliability of any new code designed
>> to accomplish the 'full rollback' desired, but of course anything would
>> have to undergo in
On Mon, May 28, 2007 at 05:15:19PM +1000, Ian Smith wrote:
>
> I share Roland's concern about the reliability of any new code designed
> to accomplish the 'full rollback' desired, but of course anything would
> have to undergo incredibly rigorous testing before it would be allowed
> anywhere near
On Sun, 27 May 2007 11:01:53 -0400 Maxim Khitrov <[EMAIL PROTECTED]> wrote:
> On 5/27/07, Roland Smith <[EMAIL PROTECTED]> wrote:
> > On Sat, May 26, 2007 at 07:08:31PM -0400, Maxim Khitrov wrote:
> > > I don't think he is talking about that. From what I understand about
> > > the snapshot sy
On Sun, May 27, 2007 at 11:01:53AM -0400, Maxim Khitrov wrote:
> > The process of undoing the snapshot can't be O(1). Because the time
> > needed to create the shapshot isn't either.
>
> Wait a sec, when you mount a snapshot as a memory disk, does that
> memory disk contain the snapshot as well?
On 5/27/07, Roland Smith <[EMAIL PROTECTED]> wrote:
On Sat, May 26, 2007 at 07:08:31PM -0400, Maxim Khitrov wrote:
> I don't think he is talking about that. From what I understand about
> the snapshot system (correct me if I'm wrong) is that a snapshot
> creates it's own file system by remembe
On Sat, May 26, 2007 at 07:08:31PM -0400, Maxim Khitrov wrote:
> I don't think he is talking about that. From what I understand about
> the snapshot system (correct me if I'm wrong) is that a snapshot
> creates it's own file system by remembering, for example, what the
> superblock was at the t
# umount
# snap_rollback
*wait 10 seconds*
# mount
.. and I'm set.
I believe it should be possible. And if nothing like that exists, it
should be made. I could look into it, but I would have to learn a
lot more about the inner workings of the file system first.
related:
afaik, zfs rollback is
On 5/26/07, Roland Smith <[EMAIL PROTECTED]> wrote:
On Sat, May 26, 2007 at 11:59:13PM +0200, Svein Halvor Halvorsen wrote:
> Roland Smith wrote:
> > You could use rsync instead of tar. That would save time.
>
> I'm not talking about saving time. But saving CPU time and HDD
> stress. However, the
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Roland Smith wrote:
> You can't restore a previous situation _unless you saved it in some
> form_. So if you want a possibility to restore stuff, you'll have to
> keep a copy of it somewhere. Maybe in compressed form, and maybe you can
> clump changes
On Sat, May 26, 2007 at 11:59:13PM +0200, Svein Halvor Halvorsen wrote:
> Roland Smith wrote:
> > You could use rsync instead of tar. That would save time.
>
> I'm not talking about saving time. But saving CPU time and HDD
> stress. However, the disk space issue is a bigger one:
rsync would do mu
On 5/26/07, Svein Halvor Halvorsen <[EMAIL PROTECTED]> wrote:
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pete wright wrote:
> hmm...i'm still a little confused as to where you are going. there
> are three main way's i've used snapshot's in large (~1PB)
> environments, two of which are applic
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pete wright wrote:
> hmm...i'm still a little confused as to where you are going. there
> are three main way's i've used snapshot's in large (~1PB)
> environments, two of which are applicable to you i believe:
*snip dump/restore plug*
Yes, I unders
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Roland Smith wrote:
> You could use rsync instead of tar. That would save time.
I'm not talking about saving time. But saving CPU time and HDD
stress. However, the disk space issue is a bigger one:
>> (b) Undo all the bit flipping I have done, since
On 5/26/07, Svein Halvor Halvorsen <[EMAIL PROTECTED]> wrote:
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Roland Smith wrote:
>>> You can mount the snapshot, and then copy the files back to the original fs.
>>> Note that cp can preserve flags, but not ACLs AFAIK.
>> Yes, I know that this is po
On Sat, May 26, 2007 at 10:30:13PM +0200, Svein Halvor Halvorsen wrote:
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>
> Roland Smith wrote:
> >>> You can mount the snapshot, and then copy the files back to the original
> >>> fs.
> >>> Note that cp can preserve flags, but not ACLs AFAIK.
> >
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Roland Smith wrote:
>>> You can mount the snapshot, and then copy the files back to the original fs.
>>> Note that cp can preserve flags, but not ACLs AFAIK.
>> Yes, I know that this is possible. However, it's a lot of work.
>
> Huh?
>
> Suppose you
On 5/26/07, Svein Halvor Halvorsen <[EMAIL PROTECTED]> wrote:
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Roland Smith wrote:
>> Is it possible to rollback a file system snapshot, i.e. restore the
>> file system to the state it was in at the time a mksnap_ffs command
>> was issued?
>
> You can
On Sat, May 26, 2007 at 09:05:07PM +0200, Svein Halvor Halvorsen wrote:
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>
> Roland Smith wrote:
> >> Is it possible to rollback a file system snapshot, i.e. restore the
> >> file system to the state it was in at the time a mksnap_ffs command
> >> w
Svein Halvor Halvorsen <[EMAIL PROTECTED]> writes:
> This is also beyond the point, although I appreciate that you
> suggest alternative ways to meet my objectives. dump/restore would
> also require additional disk space.
Not as elegant as your idea, but you can always dump from the snapshot
and
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Roland Smith wrote:
>> Is it possible to rollback a file system snapshot, i.e. restore the
>> file system to the state it was in at the time a mksnap_ffs command
>> was issued?
>
> You can mount the snapshot, and then copy the files back to the origin
On Sat, May 26, 2007 at 06:48:52PM +0200, Svein Halvor Halvorsen wrote:
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>
> Hello list!
>
> Is it possible to rollback a file system snapshot, i.e. restore the
> file system to the state it was in at the time a mksnap_ffs command
> was issued?
Yo
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Hello list!
Is it possible to rollback a file system snapshot, i.e. restore the
file system to the state it was in at the time a mksnap_ffs command
was issued?
I know that I can delete an old snapshot, but could I delete the
"current" one (i.e the li
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