[Zope] Is data.fs corrupted?

Bill Welch bill@carbonecho.com
Thu, 9 Nov 2000 20:39:30 +0000 (GMT)


Eyeballing my problem Data.fs (I kept a copy), I see something different
than you describe.

What I take to be the root object (OID 0) refers to a record in what
appears to an instance of something to do with PTK (OID 57). A separate
record in the PTK related instance (PRI) refers to a record in what seems
to be the ZDiscussions *ZClass*, not an instance of ZDiscussions.
Interesting that the first (and problem) record of the PRI has the next
OID after that of the last OID of the ZClass. Could it have orginally been
part of the ZDiscussions install? I don't remember when I installed what.

See snippets of dump and tranlyzer at end of message. N.B., the Data.fs is
from an Intel machine (you have to swap bytes on the hex side to read it
correctly).

I tried the reinstall, delete instances method with no improvement. It
didn't seem to me that truncating would have helped me either, considering
that I would have had to truncate back to and including the root :-).

I recovered by exporting all my objects, starting a new ZODB, and
importing my objects. 

Bill.

On Thu, 9 Nov 2000, Chris McDonough wrote:

> But problems may happen when an application places instances into the ZODB
> of non-web-manageable, non-builtin objects as attributes of normal Zope
> objects.  If these instances aren't cleaned up in the process of the
> deletion of whatever bit of Python code created them, they're "orphaned".
> When they're orphaned, some application code may attempt to initialize the
> object's instance (for whatever reason) in order to make use of them, and
> because the ZODB can't find the class of the instance, it complains.  It
> complains by raising an exception.  Zope's supposed to catch this and do the
> right thing, but it evidently doesn't sometimes.
> 
> You can "fix it" by restoring whatever class the instance depends on and
> subsequently use the debugger to delete the instance from the ZODB.  But
> I've had it happen to me where it was just easier to truncate the
> FileStorage I was working on than figure out exactly what was going on.
> This is bad.

TID: 33140200A4749F8 @ 69694 obs 1 len 274 (status 'p') By [Zope]
"Added Globals"
	OID: 0 len 204
		2, 57

0069680 7d0b 0c71 2e75 0000 0000 0000 e404 3103  >.}q.u..........1<
0069696 1f40 b8f5 08b6 0000 0000 0000 1a01 0070  >@.............p.<
0069712 0000 000d 4100 6464 6465 4720 6f6c 6162  >.....Added Globa<
0069728 736c 0000 0000 0000 0000 3103 1f40 b8f5  >ls.........1@...<
0069744 08b6 0000 0000 0000 0000 0000 0000 0100  >................<
0069760 3e10 0000 0000 0000 0000 cc00 2828 0b55  >.>..........((U.<
0069776 6550 7372 7369 6574 636e 7165 5501 5011  >Persistenceq.U.P<
0069792 7265 6973 7473 6e65 4d74 7061 6970 676e  >ersistentMapping<
0069808 0271 7174 4e03 2e74 717d 5504 5f0a 6f63  >q.tq.Nt.}q.U._co<
0069824 746e 6961 656e 7172 7d05 0671 5528 5f0a  >ntainerq.}q.(U._<
0069840 6170 6b63 745f 6d69 7165 4707 cb41 1497  >pack_timeq.GA...<
0069856 5662 9cc2 0b55 7041 6c70 6369 7461 6f69  >bV..U.Applicatio<
0069872 716e 2808 0855 0000 0000 0000 0200 0971  >nq.(U.........q.<
0069888 5528 4f0f 5346 412e 7070 696c 6163 6974  >(U.OFS.Applicati<




TID: 3374475482BCF4C @ 3769401 obs 2 len 648 (status 'p') By [Zope]
"Installed product DemoPortal"
	OID: 137f len 456
		1377, 43ed, 43f3, 4431
		135e, 43f0, 4389, 1568
		442e, 1565
	OID: 57 len 65
		137f



3769392 002e 0000 0000 a100 036a 4437 4875 cf2b  >........j.7DuH+.<
3769408 004c 0000 0000 0200 7090 0000 1c00 0000  >L........p......<
3769424 6e49 7473 6c61 656c 2064 7270 646f 6375  >Installed produc<
3769440 2074 6544 6f6d 6f50 7472 6c61 0000 0000  >t DemoPortal....<
3769456 0000 7f13 3703 7544 2b48 4ccf 0000 0000  >.....7DuH+.L....<
3769472 0000 0000 0000 0000 3900 3984 0000 0000  >.........9.9....<
3769488 0000 0000 c801 2828 0555 5442 6572 7165  >......((U.BTreeq<
3769504 5501 4206 6375 656b 7174 7402 0371 744e  >.U.Bucketq.tq.Nt<
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3769536 6144 6932 504b 7469 3576 6737 3d3d 0471  >Da2iKPitv57g==q.<
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3769680 3570 634c 494c 5a38 5a6a 5471 3d51 713d  >p5LcLI8ZjZqTQ==q<
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3769808 3d77 713d 740d 5528 0008 0000 0000 1300  >w==q.t(U........<
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3769904 5114 0855 0000 0000 0000 6815 1571 5551  >.QU........hq.QU<
3769920 0008 0000 0000 4400 712e 5116 0855 0000  >.......D.q.QU...<
3769936 0000 0000 6515 1771 7451 7174 2e18 0000  >.....eq.Qttq....<
3769952 0000 0000 5700 3703 7544 2b48 4ccf 0000  >.....W.7DuH+.L..<
3769968 0000 0000 0000 0000 0000 3900 3984 0000  >...........9.9..<
3769984 0000 0000 0000 4100 2828 0555 5442 6572  >.......A((U.BTre<
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3770016 2e74 2828 284e 0855 0000 0000 0000 7f13  >t.((N(U.........<
3770032 0471 6828 5501 4206 6375 656b 7174 7405  >q.(h.U.Bucketq.t<
3770048 5174 0a4b 7474 0671 002e 0000 0000 0200  >tQK.ttq.........<
3770064 0390 4437 7a82 f666 00f7 0000 0000 2100  >..7D.zf........!<



TID: 3364E8A614C1CC5 @ 384103 obs 35 len 32471 (status 'p') By  superuser
"/Control_Panel/Products/manage_importObject

import into /var/lib/zope/var/Data.fs from
/var/lib/zope/import/ZDiscussions.zexp"
	OID: 135b len 488
		135d, 135e, 135f, 1360
	OID: 135d len 255
	OID: 135e len 1795
		1361, 135d, 1363, 1364
		1365, 1366, 1367, 1368
		1362
	OID: 135f len 327
	OID: 1360 len 206
		135f, 1369, 136a
	OID: 1361 len 1164
		136b, 136d, 1373, 136c
		136f, 1370, 1371, 1372
		136e, 1374, 1375
	OID: 1362 len 547
	OID: 1363 len 21
		135d
	OID: 1364 len 1534
	OID: 1365 len 1107
	OID: 1366 len 484
		1376, 1377, 1378, 1379
	OID: 1367 len 243
	OID: 1368 len 845
	OID: 1369 len 57
	OID: 136a len 380
	OID: 136b len 730
	OID: 136c len 383
	OID: 136d len 1799
	OID: 136e len 1291
	OID: 136f len 1836
	OID: 1370 len 2178
	OID: 1371 len 1812
	OID: 1372 len 2484
	OID: 1373 len 305
	OID: 1374 len 2164
	OID: 1375 len 3213
	OID: 1376 len 253
	OID: 1377 len 900
		1376, 137a, 137b, 137c
	OID: 1378 len 325
	OID: 1379 len 206
		1378, 137d, 137e
	OID: 137a len 21
		1376
	OID: 137b len 206
	OID: 137c len 1084
	OID: 137d len 57
	OID: 137e len 150


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.
.
.
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