Date: Wed, 20 Sep 2017 23:06:11 +0000 From: andrei@fazik.net.ua To: freebsd-stable@freebsd.org Subject: CAM status: Command timeout Message-ID: <a27d42f3a940534504363b031793dbf5@fazik.net.ua>
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Hello, After updating to 11.1 my home server can't boot with errors like (ada0:ata2:0:0:0): WRITE_DMA48. ACB: 35 00 50 29 10 40 6c 00 0c 00 (ada0:ata2:0:0:0): CAM status: Command timeout (ada0:ata2:0:0:0): Retrying command for all 6 sata hdd(stripe from 2 raidz) ACB different from boot to boot Sometimes it even can boot, but in few minutes will hang with same errors. Hardware: Supermicro X8DTN+-F / 6xWD1502FYPS-02W3B0 /2xE5649 HDDs connected to sata ports on baseboard. If I add hint.ata.2.mode=PIO4 hint.ata.3.mode=PIO4 hint.ata.4.mode=PIO4 hint.ata.5.mode=PIO4 to device.hints I'm able to boot but performance of IO becomes really disappointing. Also, if I add something like "find / -name something" to zfs rc script, than boots fine. If I roll back system to 11.0 all works fine again. Any advise on debuging of this issue? Also raised bug report some time ago for this issue https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=221704help
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