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DATA LOSS! "Number of copies" set to zero for all books

Bug Collectors

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Sep 9, 9:39am Top

Recently (I believe the data was there when I last looked on Thursday, but do not have a download file more recent than August 28, when the data was present and correct) the "Number of copies" data for every title in my lorax_short account was set to zero. I have carefully fllled out this data for all of the ~3200 titles in that catalog (many of which I have more than one copy of) and was shocked to see it deleted.

When can I expect to see this data restored? We've always been promised, after all, that data loss is taken seriously.

Sep 9, 9:55am Top

Incidentally, I do have the download file (can't call it a backup, since I can't restore from it) as proof that the data was there, in case someone wants to suggest that I was only imagining entering it.

Sep 9, 11:02am Top

A JSON download of my entire catalog done on 9/1/19 shows a nonzero "number of copies" on many of my books (probably all of them, but I haven't checked them all yet). Looking at my catalog right now, only the books added yesterday have a nonzero "number of copies". >1 lorax: is not imagining this. This needs to be taken seriously.

Sep 9, 11:14am Top

Yes, all at 0.

Sep 9, 11:27am Top

I opened a random book in the middle of my catalogue, and it's also at zero copies.

Sep 9, 11:28am Top

Mine are all at zero copies also.

Sep 9, 11:39am Top

Okay, thanks. We're on it.

Sep 9, 11:41am Top

Thanks for the heads up here. We're working on this.

Sep 9, 11:42am Top

On the plus side: I did another JSON download just now, and compared it to my 9/1 JSON download. Of all the data captured in the JSON format it appears that "number of copies" is the only field affected.

Sep 9, 12:24pm Top

Okay, we're going to be restoring the data, but it's going to take some time, and it will go in stages.

I suggest you ignore the field entirely while we work this out. You'll notice it changing, but it will go to 1 before it goes to whatever you had. (In 99.9% of cases it was one—this is the least changed field—so I'm starting by setting it to 1.)

However, any changes you make now will stick and not be replaced. So go ahead and make changes if you want.

Sep 9, 12:45pm Top

The math appears to show the number isn't 99.9, but 99.2.

Sep 9, 1:17pm Top

Thanks for restoring this so quickly!

Sep 9, 2:39pm Top

>12 lorax:

It ain't up yet. And I'm not sure about the last few days. Working it.

Sep 9, 3:26pm Top

Oh, I can see it's not there yet - I'm just happy this got noticed and a fix initiated quickly.

Sep 10, 8:54am Top

They're all still at zero for me; when should we expect to see them starting to repopulate?

Sep 10, 11:57am Top

I am having a the same issue. We have a large catalogue with multiple copies. Looking for an admin to look into the problem.


Sep 10, 12:34pm Top

TBNadvanced (#16):

Please read Tim's message #10.

Sep 10, 1:43pm Top

Data still populating. It's currently populating rather old data, because spinning up the recent backup is only partway done.

Sep 11, 10:42am Top

I'm no longer seeing zeroes, but the numbers in some cases are incorrect - they're one smaller than they should be in those cases. This is consistent with having been restored from old data (I'm looking at lorax_short, my short fiction account; when I enter the contents of a new anthology, rather than adding duplicate copies of a short story I increment the "Number of copies" by one). Is what we have now the final version, in which case I can start to edit the data, or is it still updating?

Sep 11, 11:33am Top

>19 lorax:

Any updates you make will "stick."

But, indeed, the data is old. Pedro told me the recent backup is almost finished. Once it is, I'll be replacing any differences.

Sep 11, 2:49pm Top


I'll wait another day or two until making any changes, then; not because I'm worried about things not sticking, but because I don't want to do manually what will be done automatically if I'm just patient.

Sep 11, 6:52pm Top

Edited: Sep 12, 4:15pm Top

>10 timspalding: So, do you have any idea what happened in the first place?

Edited: Sep 14, 5:26pm Top

PMM Library has its number of copies column changed from 0 to 1. LibraryThing stated this was their first step in fixing the problem (all zeros in the number of copies column) and that more changes would be coming to change these to the actual number of copies recorded.
Does this mean we should not add new books to the library until this problem is fixed?

Thank you, Betty

Sep 16, 8:49am Top

You can add books to your library, just don't touch the "Copies" field of any of your affected books while we work on restoring that data. If you do, whatever you edit that field as will stay.

Edited: Sep 16, 8:56am Top

Will there be an update here when it's done? Mine (as noted above) had the second pass to update to "old, but not all ones", but hasn't yet had the "more recent backup" refresh.

Sep 16, 9:30am Top

I'll see that we post an update, yes! Thanks.

Sep 16, 9:32am Top

The new data has been made available. I'll be starting the process to bring it online shortly, once I can make sure that nothing you do now will be overwritten by it. It will then take maybe 24h.

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Bug (edit)

ID: 311052

Category: Your books (catalog)

Assigned to all

Reported by lorax

Status: Needs discussion

Sep 10, 11:57am

10 days since last change

By TBNadvanced

Status log

Reported. lorax (Sep 9, 9:39am)

Needs discussion. TBNadvanced (Sep 10, 11:57am)


This topic is not marked as primarily about any work, author or other topic.


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