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 system
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 even
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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
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 time
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
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?
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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
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?
You can
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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 original fs.
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
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
was issued?
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 mount
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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 did
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.
Yes, I know that
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 possible.
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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 I
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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
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 applicable
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 much
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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 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 disk
# 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
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