hi,
i'm testing the aoe/vblade as a backend for mdadm/raid10 with the
lvm/ocfs2 on the top.
during i/o tests i'm observing ranfom failures of /dev/etherd/e*.* devices.
in the worst case the 'dd if=/dev/zero of=/dev/etherd/e... bs=1M
count=4096' leads
to machine reboot without any logs but i have a reduced non-rebootable
testcase
that could be related.
here're steps to reproduce:
on the first console:
# rmmod aoe
# modprobe aoe aoe_iflist=lo
# ls -lh /home/testfile
-rw-r--r-- 1 root root 8,0G 07-26 16:11 /home/testfile
# vblade 666 0 lo /home/testfile
pid 4589: e666.0, 16777216 sectors O_RDWR
on the second console:
# aoe-discover && aoe-stat
e666.0 8.589GB lo up
# dd if=/dev/zero of=/dev/etherd/e666.0 bs=1M count=1024
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 6.66507 s, 161 MB/s
and one more copy...
# dd if=/dev/zero of=/dev/etherd/e666.0 bs=1M count=1024
<freeze...>
now back to first console and there's a message from vblade:
read network: Bad address
the end of vblade strace log contains:
(...)
read(4, 0x603fdc, 65536) = -1 EFAULT (Bad address)
dup(2) = 5
fcntl(5, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
fstat(5, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 1), ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
0x7f6b12f1d000
lseek(5, 0, SEEK_CUR) = -1 ESPIPE (Illegal seek)
write(5, "read network: Bad address\n", 26read network: Bad address) = 26
adding the '-s' switch to vblade seems to workaround this error but
impacts performance.
could you please look at this error?
i'm using following software:
aoetools-30-2.x86_64
vblade-20-1.x86_64
kernel-2.6.34.1-3.x86_64
glibc-2.12-4.x86_64
gcc-4.5.0-9.x86_64
BR,
Pawel.
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