On 2015-04-25 17:25 +1000, NeilBrown wrote:
> Perfectly normal. Metadata is at the end, at least 64K from the end
> and 64K aligned.
Yes. Format 0.90.
> And what were those messages about sda?
The actual messages have been displaced by lockd's rambling but as I
remember, it was this sort of thing :
ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
ata1.00: BMDMA stat 0x4
ata1.00: failed command: READ DMA EXT
ata1.00: cmd 25/00:80:a9:54:70/00:00:74:00:00/e0 tag 0 dma 65536 in
res 51/40:00:25:55:70/40:00:74:00:00/e0 Emask 0x9 (media error)
ata1.00: status: { DRDY ERR }
ata1.00: error: { UNC }
ata1.00: configured for UDMA/133
ata1: EH complete
I ran e2fsck on copies of sda1 and sdc1. They are both heavily damaged,
not just sdc1.
Looks like I'm going to have to replace a disk and see. I'd like to
avoid replacing two, though. Or going through more crashes. Does
MD have a paranoid mode in which reading a sector from a RAID-1
device would not return successfully until it got matching data
from at least two components ?
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