Date: Thu, 20 Aug 2015 12:57:12 +0300 From: KOT MATPOCKuH <matpockuh@gmail.com> To: freebsd-stable@freebsd.org Subject: Silent data corruption on em(4) interfaces Message-ID: <CALmdT0UC_gg6oSix_HSxLoJF_JDaqVbqen52trfcJGT2vKskgQ@mail.gmail.com>
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Hello!
I got silent data corruption when transferring data via em(4) interface on
10.2-STABLE r286912.
1. I got broken large file transferred via ftp (MD5 checksum mismatched);
2. I got disconnects when transferring large data via ssh with messages:
Corrupted MAC on input.
Disconnecting: Packet corrupt
Problem occurs only after few hours of uptime. Immediately after reboot I
transferred same file via ftp without any errors.
I tried to use:
- em0 and em2 interfaces in link aggregation
- em1 as "clean" interface
But I got same problem in both cases.
Also one time when transferring file I got this messages:
em0: Interface stopped DISTRIBUTING, possible flapping
em0: Watchdog timeout -- resetting
em2: Interface stopped DISTRIBUTING, possible flapping
em2: Watchdog timeout -- resetting
netstat -in does not see any problems:
Name Mtu Network Address Ipkts Ierrs Idrop Opkts
Oerrs Coll
em0 1500 <Link#1> 00:14:4f:01:3f:7a 6689452 0 0
146720 0 0
em1 1500 <Link#2> 00:14:4f:01:3f:7b 5732168 0 0
2865912 0 0
em2 1500 <Link#3> 00:14:4f:01:3f:7c 501817 0 0
3392333 0 0
Network adapters is build in to the Sun Fire X4100 mother board:
em0@pci0:1:1:0: class=0x020000 card=0x10118086 chip=0x10108086 rev=0x03
hdr=0x00
vendor = 'Intel Corporation'
device = '82546EB Gigabit Ethernet Controller (Copper)'
class = network
subclass = ethernet
TCP_OFFLOAD disabled in kernel's config.
Any ideas?
--
MATPOCKuH
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