Re: [Sks-devel] Copying DBs & Pruning Logs

[Yaron Minsky]

I've actually never had trouble with "db_archive" by itself.  Only
"db_archive -s", which has a different function, has trashed my database. 
I believe (but am not sure) that plain "db_archive" is safe.


Dan Egli said:
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> Yaron M. Minsky wrote:
>
> | On Mon, 2003-11-17 at 17:47, Daniel Johnson wrote:
> |
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> |>Possibly dumb question:
> |>Instead of dumping my database, copying that to another system, and
> |>merging it, can I just copy my KDB and PTree directories to save time?
> |
> |
> | Yes, but stop sks_db and sks_recon before doing the copy.
> |
> |
> This is critical. Doing some experimentation Yaron and I discovered that
> if you cp your database while sks_recon and sks_db have it open, it has
> about a 95% chance of being a corrupted copy. My backup script (that I
> run by hand a few times a month) kills sks db and sks recon (I'm betaing
> 1.0.5, which replaces sks_db and sks_recon with a single sks binary that
> takes the operation as a paramater, so your sks_db is my sks db [notice
> the lack of an underscore]).
>
> |>My home server took ~30 hours just to merge the dump.  Given that it
> |>is ~10x faster than the office system, I'd like to avoid a merge op if
> |>I can.  :)
> |>
> |>BTW, I've got a lot of 10mb log files (~5gb).  Is it safe to delete
> |>some of them (say, all but the newest 3)?
> |
> |
> | Use "db_archive" to figure out the list of outdated log files.  "rm
> | `db_archive`" will get rid of them.  Don't just do it by hand.
>
> Shutdown sks_db and sks_recon before doing this too. For some reason
> db_archive does not like playing with an open database.
>
> - --- Dan
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|--------/            Yaron M. Minsky              \--------|
|--------\ http://www.cs.cornell.edu/home/yminsky/ /--------|

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