LUV : No space left on device

[gkammela]

Recent findings while testing custom builds on various platforms shows that 3 out 10 builds hit the 'No space left on device'. At first , this issue was seen only on real hardware but then it appears it QEMU too.

here is the log: tee: /mnt/luv-storage/luv-results-2016-11-18--23-42-36/parsed/chipsec: No space left on device [ 64.949402] [+] chipsec.modules.common.bios_kbrd_buffer... passed [ 65.180382] [+] chipsec.modules.common.bios_smi... passed awk: cmd. line:141: (FILENAME=- FNR=58) fatal: print to "/mnt/luv-storage/luv-results-2016-11-18--23-42-36//luv.html" failed (No space left on device)

and the following keeps printing after each unittest. awk: cmd. line:97: (FILENAME=- FNR=1) warning: file flush of `/mnt/luv-storage/luv-results-2016-11-18--23-42-36//luv.html' failed (No space left on device).

[ricardon]

Hmmm. This might indicate that we are either 1) underestimating the amount of storage is needed to store results or 2) the logic we use to abort if there is not enough space is buggy. We should discover these issues even before attempting to run any test case. Did you use the same USB stick repeatedly to hit this issue?

On Fri, Nov 18, 2016 at 4:10 PM, Gayatri Kammela notifications@github.com wrote:

Recent findings while testing custom builds on various platforms shows that 3 out 10 builds hit the 'No space left on device'. At first , this issue was seen only on real hardware but then it appears it QEMU too.

here is the log: tee: /mnt/luv-storage/luv-results-2016-11-18--23-42-36/parsed/chipsec: No space left on device [ 64.949402] [+] chipsec.modules.common.bios_kbrd_buffer... passed [ 65.180382] [+] chipsec.modules.common.bios_smi... passed awk: cmd. line:141: (FILENAME=- FNR=58) fatal: print to "/mnt/luv-storage/luv-results-2016-11-18--23-42-36//luv.html" failed (No space left on device)

and the following keeps printing after each unittest. awk: cmd. line:97: (FILENAME=- FNR=1) warning: file flush of `/mnt/luv-storage/luv-results-2016-11-18--23-42-36//luv.html' failed (No space left on device).

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[gkammela]

I did use the same USB disk, but the issue hits on the second run itself. With 16MB allocated for luv-results partition and each test results takes up to 1.1MB, we've got plenty of storage left and this "no space left " shouldn't appear until the 14/15 runs.

Interesting fact is we hit the same issue in the QEMU, where we don't have partitions to store the results.

[ricardon]

Are you running a diskboot or a netboot image? If you are running a diskboot image in QEMU you do have the partitions to save the results. However, you need to exit QEMU gracefully to give it a chance to flush files to disk. You can exit gracefully by issuing poweroff from the command line.

On Tue, Nov 22, 2016 at 10:49 AM, Gayatri Kammela notifications@github.com wrote:

I did use the same USB disk, but the issue hits on the second run itself. With 16MB allocated for luv-results partition and each test results takes up to 1.1MB, we've got plenty of storage left and this "no space left shouldn't appear until the 14/15 runs.

Interesting fact is we hit the same issue in the QEMU, where we don't have partitions to store the results.

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[gkammela]

Yes , I am running diskboot image and I exit QEMU via Ctrl +c. Now, I know QEMU has partitions to save results. Thanks ! @ricardon

The results partition does get full, as bits in parsed directory alone occupies 11MB when we run LUV without BITS and thus triggering the "no space left" logic. This issue in bits is reported by @prakhya

A patch has been submitted to the luv@lists.01.org to resolve this bug.

[gkammela]

Even with the patch fixes the 11MB bits file issue , I still see the same message "no space left on device" . This issue needs more debugging than expected. Any thoughts @ricardon ?

[ricardon]

Are you certain that you still see the 11MB filesize? I tested your patch and it works for me. Could you be using an unpatched version?

I will hold on your confirmation before applying your patch.

[gkammela]

sorry for the noise! I realized I was using unpatched version as I recently did rebase some of my patches. Applying the patch doesn't reproduce the error

[gkammela]

https://lists.01.org/pipermail/luv/2016-December/001433.html