On 08/20/15 at 12:57P, KOT MATPOCKuH wrote: > 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.
See if disabling TSO helps. You can disable on the interface with '-tso'. Cheers, Hiren
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