RE: [RFC PATCH v2 04/11] pstore: Add compression support to pstore

From: Luck, Tony
Date: Thu Aug 22 2013 - 19:17:30 EST


<1>[ 383.209057] RIP [<ffffffff813d3946>] sysrq_handle_crash+0x16/0x20
<4>[ 383.209057] RSP <ffff88006f551e80>
<4>[ 383.209057] CR2: 0000000000000000
<4>[ 383.209057] ---[ end trace 04a1cddad37b4b33 ]---
<3>[ 383.209057] pstore: compression failed for Part 2 returned -5
<3>[ 383.209057] pstore: Capture uncompressed oops/panic report of Part 2
<3>[ 383.209057] pstore: compression failed for Part 5 returned -5

Interesting. With ERST backend I didn't see these messages. Traces in
pstore recovered files go as far as the line before the "---[ end trace 04a1cddad37b4b33 ]---"

Why the difference depending on which back end is in use?

But I agree that we shouldn't have these messages. They use up space
in the persistent store that could be better used saving some more lines
from earlier in the console log.

-Tony
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