Date: Thu, 10 Apr 2014 11:27:12 +0200 From: Dirk-Willem van Gulik <dirkx@webweaving.org> To: freebsd-hackers@freebsd.org Subject: Hardware raid v.s. 'soft errors' Message-ID: <FF1DB9B2-7B90-4102-81B6-3F4251B7043B@webweaving.org>
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Got two AAC hardware raid machines - slightly differently configured. Both are (about once every other year) giving an error like g_vfs_done():aacd1p8[READ(offset=1757508976640, length=65536)]error = 5 while the hardware raid is healthy - and passes all its validations. As do the disks (we’ve replaced disks on those machines some 4 or 5 times - with no real impact/change - still above issue every 18 months or so) As far as I can trace this through the kernel - these errors *really* come from the ATA in the AAC - correct ? The odd thing is that it happens on two machines - with slightly different AAC cards; and with a different upgrade history. Both are now 9.2-RELEASE-p3 - but the issue has propagated from 7.2 upward. Any suggestions as to where to look ? And specifically - is there a way in the AAC to intercept events/errors at an even lower level ? Or should I be assuming this to be more in raid card firmware territory ? Dw
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