Hallo list,
I'm new to this list. But I came across some strange problems I nowhere found a solution for on the net.
This is our situation:
monosan + duosan:
Linux duosan 2.6.22.17-0.1-default #1 SMP 2008/02/10 20:01:04 UTC x86_64 x86_64 x86_64 GNU/Linux
/proc/cpuinfo:
[...]
processor : 3
vendor_id : AuthenticAMD
cpu family : 15
model : 65
model name : Dual-Core AMD Opteron(tm) Processor 2216
stepping : 3
cpu MHz : 2412.402
cache size : 1024 KB
physical id : 1
siblings : 2
core id : 1
cpu cores : 2
fpu : yes
fpu_exception : yes
cpuid level : 1
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy
bogomips : 4825.08
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc
SAS controller:
07:00.0 Ethernet controller: MYRICOM Inc. Myri-10G Dual-Protocol NIC (10G-PCIE-8A)
There are 16 SATA drives multipathed connected to each server.
duosan exports its RAID 6 over AoE via qaoed
monosan sees this as etherd/e22.0
monosan# cat /proc/partitions:
9 4 12697912448 md4
9 9 12697912312 md9
152 5632 12697912448 etherd/e22.0
monosan:~ # cat /proc/mdstat
Personalities : [raid1] [raid0] [raid6] [raid5] [raid4]
md9 : active raid1 md4[0]
12697912312 blocks super 1.0 [2/1] [U_]
md4 : active raid6 dm-0[0] dm-8[14] dm-7[13] dm-6[12] dm-5[11] dm-4[10] dm-3[9] dm-2[8] dm-14[7] dm-13[6] dm-12[5] dm-11[4] dm-10[3] dm-9[2] dm-1[1]
12697912448 blocks level 6, 64k chunk, algorithm 2 [15/15] [UUUUUUUUUUUUUUU]
But then this:
monosan:~ # mdadm /dev/md9 -a /dev/etherd/e22.0
mdadm: /dev/etherd/e22.0 not large enough to join array
The md9 RAID1 was originally built with e22.0 as second drive. I just simulated a connection loss.
Why is this happening? As you can see md9 consists of md4 and e22.0 and both are equal in size: 12697912448 .
How can I debug this? Are there detailed logs anywhere?
Many thanks for any hint.
Lars
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Informationstechnologie
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Tel.: +49 30 20370-352 http://www.bbaw.de
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