geom mirror in error-prone situations

[Adam Pordzik]

Hello,

recentlty, I was faced a strange situation, where ata(4) reports
irregularly interrupt storms followed by DMA_WRITE timeouts.

Mar 20 01:00:30 brain kernel: interrupt storm detected on "irq14:"; throttling interrupt source
Mar 20 01:00:30 brain last message repeated 4 times
Mar 20 01:00:30 brain kernel: ata5: reiniting channel ..
Mar 20 01:00:30 brain kernel: ata5: SATA connect time=0ms
Mar 20 01:00:30 brain kernel: ata5: reset tp1 mask=01 ostat0=51 ostat1=00
Mar 20 01:00:30 brain kernel: ata5: stat0=0x50 err=0x01 lsb=0x00 msb=0x00
Mar 20 01:00:30 brain kernel: ata5: reset tp2 stat0=50 stat1=00 devices=0x1<ATA_MASTER>
Mar 20 01:00:30 brain kernel: ata5: reinit done ..
Mar 20 01:00:30 brain kernel: ad10: TIMEOUT - WRITE_DMA48 retrying (0 retries left) LBA=871709696

The disk was (and still is) pysically faultless.

How would gmirror handle such a disk? Would that disc be removed
at the first error? And would it be inserted the next boot? If so,
does it first have to be rebuild?

A

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