On Wed, Feb 25, 2009 at 07:33:34PM -0500, Miles Nordin wrote:
You might also have a look at the, somewhat overcomplicated
w.r.t. database-running-snapshot backups, SQLite2 atomic commit URL
Toby posted:
http://sqlite.org/atomiccommit.html
That's for SQLite_3_, 3, not 2.
Also, we don't
Miles Nordin wrote:
that SQLite2 should be equally as tolerant of snapshot backups as it
is of cord-yanking.
The special backup features of databases including ``performing a
checkpoint'' or whatever, are for systems incapable of snapshots,
which is most of them. Snapshots are not
On 25-Feb-09, at 9:53 AM, Moore, Joe wrote:
Miles Nordin wrote:
that SQLite2 should be equally as tolerant of snapshot backups
as it
is of cord-yanking.
The special backup features of databases including ``performing a
checkpoint'' or whatever, are for systems incapable of snapshots,
jm == Moore, Joe joe.mo...@siemens.com writes:
jm This is correct. The general term for these sorts of
jm point-in-time backups is crash consistant.
phew, thanks, glad I wasn't talking out my ass again.
jm In-flight transactions (ones that have not been committed) at
jm the
tt == Toby Thain t...@telegraphics.com.au writes:
c so it's ok for snapshots but not cord-yanks if VBox never
c bothers to call fsync().
tt Taking good host snapshots may require VB to do that, though.
AIUI the contents of a snapshot on the host will be invariant no
matter where
Miles Nordin wrote:
gp Performing a checkpoint will perform such tasks as making sure
gp that all transactions recorded in the log but not yet written
gp to the database are written out and that the system is not in
gp the middle of a write when you grab the data.
great copying
gp == Greg Palmer gregorylpal...@netscape.net writes:
gp Relying on the equivalent of crashing the database to perform
gp backups isn't how professionals get the job done.
well, nevertheless, it is, and should be, supported by SQLite2.
gp Let's take a simple case of a transaction
On Mon, Feb 23, 2009 at 10:05:31AM -0800, Christopher Mera wrote:
I recently read up on Scott Dickson's blog with his solution for
jumpstart/flashless cloning of ZFS root filesystem boxes. I have to say
that it initially looks to work out cleanly, but of course there are
kinks to be worked
On Tue, Feb 24, 2009 at 19:18, Nicolas Williams
nicolas.willi...@sun.com wrote:
On Mon, Feb 23, 2009 at 10:05:31AM -0800, Christopher Mera wrote:
I recently read up on Scott Dickson's blog with his solution for
jumpstart/flashless cloning of ZFS root filesystem boxes. I have to say
that it
-Original Message-
From: Mattias Pantzare [mailto:pantz...@gmail.com]
Sent: Tuesday, February 24, 2009 1:38 PM
To: Nicolas Williams
Cc: Christopher Mera; zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] zfs streams data corruption
On Tue, Feb 24, 2009 at 19:18, Nicolas Williams
nicolas.willi
] zfs streams data corruption
On Tue, Feb 24, 2009 at 19:18, Nicolas Williams
nicolas.willi...@sun.com wrote:
On Mon, Feb 23, 2009 at 10:05:31AM -0800, Christopher Mera wrote:
I recently read up on Scott Dickson's blog with his solution for
jumpstart/flashless cloning of ZFS root filesystem
On Tue, Feb 24, 2009 at 07:37:39PM +0100, Mattias Pantzare wrote:
On Tue, Feb 24, 2009 at 19:18, Nicolas Williams
nicolas.willi...@sun.com wrote:
When you snapshot a ZFS filesystem you get just that -- a snapshot at
the filesystem level. That does not mean you get a snapshot at the
Thanks for your responses..
Brent:
And I'd have to do that for every system that I'd want to clone? There
must be a simpler way.. perhaps I'm missing something.
Regards,
Chris
___
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zfs-discuss@opensolaris.org
On Tue, Feb 24, 2009 at 10:56:45AM -0800, Brent Jones wrote:
If you are writing a script to handle ZFS snapshots/backups, you could
issue an SMF command to stop the service before taking the snapshot.
Or at the very minimum, perform an SQL dump of the DB so you at least
have a consistent full
On Tue, Feb 24, 2009 at 11:32 AM, Christopher Mera cm...@reliantsec.net wrote:
Thanks for your responses..
Brent:
And I'd have to do that for every system that I'd want to clone? There
must be a simpler way.. perhaps I'm missing something.
Regards,
Chris
Well, unless the database
cm == Christopher Mera cm...@reliantsec.net writes:
cm it would be ideal to quiesce the system before a snapshot
cm anyway, no?
It would be more ideal to find the bug in SQLite2 or ZFS. Training
everyone, ``you always have to quiesce the system before proceeding,
because it's full of
bj == Brent Jones br...@servuhome.net writes:
bj tolerating that your database will not be consistent after a
bj snapshot and have to replay logs / consistency check it
``not be consistent'' != ``have to replay logs''
pgpLNmP6hsO3I.pgp
Description: PGP signature
Mera
Cc: Mattias Pantzare; Nicolas Williams; zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] zfs streams data corruption
On Tue, Feb 24, 2009 at 11:32 AM, Christopher Mera cm...@reliantsec.net wrote:
Thanks for your responses..
Brent:
And I'd have to do that for every system that I'd
; Nicolas Williams; zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] zfs streams data corruption
On Tue, Feb 24, 2009 at 11:32 AM, Christopher Mera cm...@reliantsec.net wrote:
Thanks for your responses..
Brent:
And I'd have to do that for every system that I'd want to clone? There
must
[mailto:lori@sun.com]
Sent: Tuesday, February 24, 2009 3:13 PM
To: Christopher Mera
Cc: Brent Jones; zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] zfs streams data corruption
On 02/24/09 12:57, Christopher Mera wrote:
How is it that flash archives can avoid these headaches
On Tue, Feb 24, 2009 at 01:17:47PM -0600, Nicolas Williams wrote:
I don't think there's any way to ask svc.config to pause.
Well, IIRC that's not quite right. You can pstop svc.startd, gently
kill (i.e., not with SIGKILL) svc.configd, take your snapshot, then prun
svc.startd.
Nico
--
On Tue, Feb 24, 2009 at 2:15 PM, Nicolas Williams
nicolas.willi...@sun.comwrote:
On Tue, Feb 24, 2009 at 01:17:47PM -0600, Nicolas Williams wrote:
I don't think there's any way to ask svc.config to pause.
Well, IIRC that's not quite right. You can pstop svc.startd, gently
kill (i.e., not
On Tue, Feb 24, 2009 at 02:53:14PM -0500, Miles Nordin wrote:
cm == Christopher Mera cm...@reliantsec.net writes:
cm it would be ideal to quiesce the system before a snapshot
cm anyway, no?
It would be more ideal to find the bug in SQLite2 or ZFS. Training
everyone, ``you always
On Tue, Feb 24, 2009 at 02:27:18PM -0600, Tim wrote:
On Tue, Feb 24, 2009 at 2:15 PM, Nicolas Williams
nicolas.willi...@sun.comwrote:
On Tue, Feb 24, 2009 at 01:17:47PM -0600, Nicolas Williams wrote:
I don't think there's any way to ask svc.config to pause.
Well, IIRC that's not quite
On Tue, Feb 24, 2009 at 12:19:22PM -0800, Christopher Mera wrote:
There are over 700 boxes deployed using Flash Archive's on an S10 system
with a UFS root. We've been working on basing our platform on a ZFS
root and took Scott Dickson's suggestions
On 24-Feb-09, at 1:37 PM, Mattias Pantzare wrote:
On Tue, Feb 24, 2009 at 19:18, Nicolas Williams
nicolas.willi...@sun.com wrote:
On Mon, Feb 23, 2009 at 10:05:31AM -0800, Christopher Mera wrote:
I recently read up on Scott Dickson's blog with his solution for
jumpstart/flashless cloning of
On Tue, Feb 24, 2009 at 2:37 PM, Nicolas Williams
nicolas.willi...@sun.comwrote:
Hot Backup?
# Connect to the database
sqlite3 db $dbfile
# Lock the database, copy and commit or rollback
if {[catch {db transaction immediate {file copy $dbfile ${dbfile}.bak}}
res]} {
On Tue, Feb 24, 2009 at 03:25:53PM -0600, Tim wrote:
On Tue, Feb 24, 2009 at 2:37 PM, Nicolas Williams
nicolas.willi...@sun.comwrote:
Hot Backup?
# Connect to the database
sqlite3 db $dbfile
# Lock the database, copy and commit or rollback
if {[catch {db
On Mon, Feb 23, 2009 at 02:36:07PM -0800, Christopher Mera wrote:
panic[cpu0]/thread=dacac880: BAD TRAP: type=e (#pf Page fault)
rp=d9f61850 addr=1048c0d occurred in module zfs due to an illegal
access to a user address
Can you describe what you're doing with your snapshot?
Are you zfs
fine.
-Original Message-
From: Nicolas Williams [mailto:nicolas.willi...@sun.com]
Sent: Tuesday, February 24, 2009 5:43 PM
To: Christopher Mera
Cc: lori@sun.com; zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] zfs streams data corruption
On Mon, Feb 23, 2009 at 02:36:07PM -0800
On Tue, Feb 24, 2009 at 03:08:18PM -0800, Christopher Mera wrote:
It's a zfs snapshot that's then sent to a file..
On the new boxes I'm doing a jumpstart install with the SUNWCreq
package, and using the finish script to mount an NFS filesystem that
contains the *.zfs dump files. Zfs receive
Miles Nordin wrote:
Hope this helps untangle some FUD. Snapshot backups of databases
*are* safe, unless the database or application above it is broken in a
way that makes cord-yanking unsafe too.
Actually Miles, what they were asking for is generally referred to as a
checkpoint and they are
gp == Greg Palmer gregorylpal...@netscape.net writes:
gp Performing a checkpoint will perform such tasks as making sure
gp that all transactions recorded in the log but not yet written
gp to the database are written out and that the system is not in
gp the middle of a write when
Hi folks,
I recently read up on Scott Dickson's blog with his solution for
jumpstart/flashless cloning of ZFS root filesystem boxes. I have to say
that it initially looks to work out cleanly, but of course there are
kinks to be worked out that deal with auto mounting filesystems mostly.
I don't know what's causing this, nor have I seen it.
Can you send more information about the errors you
see when the system crashes and svc.configd fails?
Doing the scrub seems like a harmless and possibly
useful thing to do. Let us know what you find out
from it.
Lori
On 02/23/09 11:05,
, February 23, 2009 1:17 PM
To: Christopher Mera
Cc: zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] zfs streams data corruption
I don't know what's causing this, nor have I seen it.
Can you send more information about the errors you
see when the system crashes and svc.configd fails
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