Eraseblocks torture: OneNAND results
Hi Artem,
Quoted 8 lines
2. There is a "check" module option which is enabled by default. It slows the test down considerably. So I recommend to disable checking at first, run the test for, say 4 million erase cycles, then re-run it with checking enabled. So that you first screw up the eraseblocks, then you start checking data. There is a handy "
cycles_count" option.3. By default the test tortures 32 eraseblocks. You may configure this via a module parameter. Just glance inside of the
torture.c.
Yes I already modified the source for my environment. and also add check initial bad block.
in tort_init()
while (1) {
int i;
for(i = eb; i < eb + ebcnt; i++) {
err = ebtest(i);
/* Skip initial bad block */
if (err == -EFAULT)
continue;
if (err)
break;
}in ebtest()
err = mtd->erase(mtd, &ei);
if (unlikely(err)) {
printk(PRINT_PREF "error %d while erasing EB %d\n", err, ebnum);
/* Initial bad block case */
if (err == -EIO)
err = -EFAULT;
return err;
}Quoted 1 line
P.S.: Test git:git://git.infradead.org/~dedekind/torture.git
I already downloaded it.
After weekend test. I will send the results.
Thank you,
Kyungmin Park
Kyungmin,
Quoted 1 line · Kyungmin Park
Yes I already modified the source for my environment. and also add check initial bad block.
Ah, indeed, thanks. I will add bad block checking. Also, I am re-structuring the test now to make it baster and more torturous. I am going to do erase/write/operations with the whole group, not with each eraseblock separately. HW guys think it should cause more trouble for flash. I will notify you when to update.
Signature · 2 lines
Best regards, Artem Bityutskiy (Битюцкий Артём)
Kyungmin,
Quoted 5 lines · Artem Bityutskiy
Ah, indeed, thanks. I will add bad block checking. Also, I am re-structuring the test now to make it baster and more torturous. I am going to do erase/write/operations with the whole group, not with each eraseblock separately. HW guys think it should cause more trouble for flash. I will notify you when to update.
I have re-worked the test and made it aware of bad eraseblock. The updated version is at git.
I also got one more error, the log is attached. I do not know how it happens that we write 0xAA but read 0x55. But what I can say is that the first errors we saw were one-bit errors. Now we mostly get massive corruptions. This looks strange. May be we should leave these (20-51) eraseblocks alone and start torturing new set of eraseblocks.
Anyways, I hope you will run the test and see what you have on your system.
I have attach one more failure log. The symptoms look the same. But now we verify eraseblocks after erase, so we can be sure erase does not leave garbage in eraseblocks.
Signature · 2 lines
Best regards, Artem Bityutskiy (Битюцкий Артём)
insmod torture.ko dev=4
[12016.978698] [12016.980529] ========================================================================================= [12016.990051] EB torture: Torture 32 eraseblocks (20-52) of mtd4 [12016.996093] EB torture: Write verify enabled [13670.757598] - 00001000 erase cycles done [15319.406188] - 00002000 erase cycles done [15416.399993] EB torture: read wrong data from EB 43 after [15416.412719] EB torture: Verify fails on 1 pages, 2016 bytes/16128 bits [15416.419525] EB torture: The following is a list of all differences between what was read from flash and what was expected [15416.431579] ----------------------------------------------------------------------------------------- [15416.441101] EB torture: Page 0 has 2016 bytes/16128 bits failing verify, starting at offset 0x0 [15416.450225] Offset Read Written [15416.456115] 0x00000000: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.463745] 0x00000008: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.471374] 0x00000010: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.479003] 0x00000018: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.486633] 0x00000020: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.494262] 0x00000028: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.501892] 0x00000030: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.509521] 0x00000038: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.517150] 0x00000040: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.524780] 0x00000048: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.532409] 0x00000050: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.540039] 0x00000058: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.547668] 0x00000060: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.555297] 0x00000068: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.562927] 0x00000070: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.570556] 0x00000078: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.578186] 0x00000080: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.585845] 0x00000088: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.593475] 0x00000090: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.601104] 0x00000098: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.608734] 0x000000a0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.616363] 0x000000a8: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.623992] 0x000000b0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.631622] 0x000000b8: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.639251] 0x000000c0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.646881] 0x000000c8: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.654510] 0x000000d0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15416.662170] 0x000000d8: 55 55 55 55 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aa aa aa aa [15418.012084] 0x00000660: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.019714] 0x00000668: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.027343] 0x00000670: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.034790] 0x00000678: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.042419] 0x00000680: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.050048] 0x00000688: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.057678] 0x00000690: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.065307] 0x00000698: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.072937] 0x000006a0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.080566] 0x000006a8: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.088195] 0x000006b0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.095825] 0x000006b8: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.103454] 0x000006c0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.111083] 0x000006c8: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.118713] 0x000006d0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.126342] 0x000006d8: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.133972] 0x000006e0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.141601] 0x000006e8: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.149230] 0x000006f0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.156860] 0x000006f8: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.164489] 0x00000700: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.172119] 0x00000708: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.179748] 0x00000710: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.187377] 0x00000718: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.195037] 0x00000720: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.202667] 0x00000728: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.210296] 0x00000730: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.217926] 0x00000738: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.225555] 0x00000740: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.233184] 0x00000748: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.240814] 0x00000750: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.248443] 0x00000758: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.256072] 0x00000760: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.263732] 0x00000768: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.271362] 0x00000770: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.278991] 0x00000778: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.286621] 0x00000780: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.294250] 0x00000788: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.301879] 0x00000790: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.309509] 0x00000798: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.317138] 0x000007a0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.324768] 0x000007a8: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.332397] 0x000007b0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.340026] 0x000007b8: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.347656] 0x000007c0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.355102] 0x000007c8: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.362731] 0x000007d0: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.370361] 0x000007d8: 55 55 55 55 55 55 55 55 *** aa aa aa aa aa aa aa aa [15418.377990] 0x000007e0: aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa [15418.391937] EB torture: verify failed for 0xAA55AA... pattern [15418.397949] EB torture: torture finished after 2058 erase cycles [15418.404235] EB torture: error -22 occurred during torturing [15418.409851] =========================================================================================