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caker
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PostPosted: Fri Apr 03, 2009 12:24 pm 
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zengei wrote:
Just making it clear: ext4 disk images are not currently supported, correct?

They will be very soon -- maybe a few days.

-Chris
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dbb
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PostPosted: Fri Apr 03, 2009 12:42 pm 
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caker wrote:
zengei wrote:
Just making it clear: ext4 disk images are not currently supported, correct?

They will be very soon -- maybe a few days.

-Chris

Great, look forward to it.
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phvt
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PostPosted: Fri Apr 03, 2009 12:54 pm 
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caker wrote:
Yeah, but there's a potential snag when involving a virtualization layer:

We're issuing the LVM snapshot on the host -- not from within your Linode's kernel. Performing a snapshot flushes dirty buffers, but since that's being done on the host your Linode kernel is unaware that this is happening, so it still has dirty buffers that were never written to disk.

This may be moot because of journaling (both at the filesystem and the db level), but, speaking for myself, I'd dump my DBs to a file...


Thanks--this is the detailed explanation I was looking for--how these snapshots are different from direct LVM snapshots, and why a db dump is very much necessary.
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fos
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PostPosted: Fri Apr 03, 2009 3:48 pm 
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I would definitely like to participate in the beta whenever it is available in Dallas.

I will definitely purchase this option whenever it becomes available!!!

Jeff
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saman007uk
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PostPosted: Fri Apr 03, 2009 4:13 pm 
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Just tried to backup my 360. I'm only using 1.9GB, and the backup took 5 hours!

Code:
snapshot 2009-04-03 21:07:16   2009-04-03 21:10:42   3 minutes, 26 seconds       successful
snapshot 2009-04-03 14:21:03   2009-04-03 19:33:48   5 hours, 12 minutes, 45 seconds      failed
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caker
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PostPosted: Fri Apr 03, 2009 4:28 pm 
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saman007uk wrote:
Just tried to backup my 360. I'm only using 1.9GB, and the backup took 5 hours!

I'm not surprised at the failures -- I've been taking things up and down all day, making improvements for speed.

-Chris
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Stever
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PostPosted: Fri Apr 03, 2009 4:47 pm 
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saman007uk wrote:
Just tried to backup my 360. I'm only using 1.9GB, and the backup took 5 hours!

Didn't you see the note that said the backup server is connected via dial-up from caker's basement? ;)
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dueyfinster
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PostPosted: Fri Apr 03, 2009 5:45 pm 
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Just to be clear: we don't have to report failures? I would guess you get notified of them and details now its in beta....

I say his because my on-demand backup failed; you were probably tweaking :D
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Internat
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PostPosted: Sat Apr 04, 2009 7:12 pm 
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Just checking, but if i use paritions on a drive.. or more to the point put a "drive" into an LVM.. and then parition on top of that im going to assume im not going to be able to use this backup option correct?

If that is the case, would you consider pricing by size rather then node type? Because if i could only backup say my root non lvm image, im not really able to back up all that much data..

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phvt
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PostPosted: Sat Apr 04, 2009 9:08 pm 
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Internat wrote:
Just checking, but if i use paritions on a drive.. or more to the point put a "drive" into an LVM.. and then parition on top of that im going to assume im not going to be able to use this backup option correct?


All I could think up for this situation so far is to make a snapshot, mount a "normal" disk image and then rsync the snapshot to that, prior to the backup window. But now you've made your own backup (using more expensive disk space)...
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ArbitraryConstant
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PostPosted: Mon Apr 06, 2009 11:02 pm 
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caker wrote:
This may be moot because of journaling (both at the filesystem and the db level), but, speaking for myself, I'd dump my DBs to a file...
It would be nifty to expose this functionality to the API. :)
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Andrea
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PostPosted: Fri May 01, 2009 1:00 pm 
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caker wrote:
phvt wrote:
It doesn't sound like it's an LVM-based snapshot, and instead is running rdiff/rsync or something simpler. The original post says we'll need to dump databases to a file prior to the backup window.

I beg to differ :). This is a very sophisticated system which *does* involve LVM snapshots on the host. But what's the difference? Live database files can't be snapshotted, or copied, or rsync consistently, anyway.

saman007uk wrote:
Will this take an actual "snapshot" or will we need to stop MySQL, etc. in order to prevent file corruption.

Doing a snapshot does NOT always mean you're doing to get your mysql DB files in a consistent state. It can depend on which type of table engine you're using, for instance...

So dump your DBs to a file before the backup window just like you would with any other backup configuration.

-Chris
File databases like sqlite3 needs special care (dump before backup) like mysql, or they just get backuped without problem?
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ohkus
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PostPosted: Fri May 01, 2009 10:51 pm 
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Well, I have a suggestions if it isn't already implemented, the ability to mount backup images so you can pull single file backups off of them.
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alexsh1
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PostPosted: Mon May 04, 2009 6:00 am 
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Andrea wrote:
File databases like sqlite3 needs special care (dump before backup) like mysql, or they just get backuped without problem?


Just put a short script into your crontab to dump your DB every day into an sql file or something just before the backup. This is all special care you need!
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clchildress
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PostPosted: Fri May 22, 2009 2:19 pm 
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RossH wrote:
Well, I have a suggestions if it isn't already implemented, the ability to mount backup images so you can pull single file backups off of them.


I second the above idea. This would introduce amazing flexibility into the system and possibly prevent unnecessary downtime. Is there anything like this yet?

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