OK, and according to your /proc/meminfo:
total: used: free: shared: buffers: cached:
Mem: 525422592 497364992 28057600 0 133500928 335839232
Swap: 1052794880 4710400 1048084480
MemTotal: 513108 kB
MemFree: 27400 kB
MemShared: 0 kB
Buffers: 130372 kB
Cached: 323368 kB
SwapCached: 4600 kB
Active: 293704 kB
Inact_dirty: 161536 kB
Inact_clean: 3100 kB
Inact_target: 16 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 513108 kB
LowFree: 27400 kB
SwapTotal: 1028120 kB
SwapFree: 1023520 kB
it's not an out-of-memory deadlock.
The RAID1 buffer allocation is pretty simple - unless the
disk controller has decided to stop delivering interrupts,
everything shold just come back to life as physical writes
complete. I assume the hardware is still working OK?
It's a uniprocessor machine, yes?
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