Yes, luckily it does - so no lasting damage is/was caused. Needless to
say though, until the fault was pinned down to the kernel change, there
was a serious moment of panic about the possible loss of 70TiB + of
data!
According to the person from the link in my first post, the problem
didn't appear to exist in 2.6.32-39 but was there in 2.6.32-41; but I
encountered it in 2.6.32-40. They were, however as far as I can tell,
using a vanilla Debian; but assuming these kernel numbers tally-up with
Ubuntu's, it appears the problem crept in somewhere in the 2.6.32-40
release.
Looking in the Debian kernel change-log, I wouldn't mind betting this would
have had something to do with it:
[ Ben Hutchings ]
* Add longterm releases 2.6.32.47 and 2.6.32.48, including:
.....
- md: Fix handling for devices from 2TB to 4TB in 0.90 metadata.
.....
Unfortunately this is a very busy production machine and I have very
limited time to pin point the issue further.
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https://bugs.launchpad.net/bugs/974275
Title:
md trancates devices with kernel 2.6.32-40-server
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