On Wed, 2 May 2012 23:14:09 -0700 Karl Newman <siliconfiend@xxxxxxxxx> wrote:
> I'm not sure how to go about getting the full stack trace. The
> motherboard has no serial port, so that's not an option. Unless the
> kernel supports USB to serial adapters for that purpose, in which case
> I might be able to borrow a couple Keyspans. Or I could sit and try
> and transcribe the whole thing...(!)
A photo with a digital camera is usually easiest. If you have wired
ethernet you could possible set up net-console.
Add something like
netconsole=@192.168.1.8/eth0,6666@192.168.1.3/00:14:85:fc:3b:de
^my address ^other host IP / ethernet
Then on other-host run
nc -u -l -p 6666 | tee -a /tmp/log
> I'm a little nervous about
> tripping the all-zeros UUID bug again, although it only happened once
> and it doesn't seem to be related to that commit.
IF you apply
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -8140,7 +8140,8 @@ static int md_notify_reboot(struct notifier_block *this,
for_each_mddev(mddev, tmp) {
if (mddev_trylock(mddev)) {
- __md_stop_writes(mddev);
+ if (mddev->pers)
+ __md_stop_writes(mddev);
mddev->safemode = 2;
mddev_unlock(mddev);
}
to the kernel before you build it, that bug should not happen again.
> Anyway, here's some
> data from the array:
Thanks. Nothing jumps out at me, but I'll ponder it some more.
Thanks,
NeilBrown
>
> # mdadm -E /dev/sda3
> /dev/sda3:
> Magic : a92b4efc
> Version : 0.90.00
> UUID : 60bf4ee8:e6e3e14f:073e21cd:ed2abb54
> Creation Time : Wed May 2 20:22:47 2012
> Raid Level : raid5
> Used Dev Size : 29302400 (27.94 GiB 30.01 GB)
> Array Size : 58604800 (55.89 GiB 60.01 GB)
> Raid Devices : 3
> Total Devices : 3
> Preferred Minor : 127
>
> Update Time : Wed May 2 23:01:45 2012
> State : active
> Internal Bitmap : present
> Active Devices : 3
> Working Devices : 3
> Failed Devices : 0
> Spare Devices : 0
> Checksum : 863c968f - correct
> Events : 2
>
> Layout : left-symmetric
> Chunk Size : 128K
>
> Number Major Minor RaidDevice State
> this 0 8 3 0 active sync /dev/sda3
>
> 0 0 8 3 0 active sync /dev/sda3
> 1 1 8 19 1 active sync /dev/sdb3
> 2 2 8 35 2 active sync /dev/sdc3
>
> # mdadm -X /dev/sda3
> Filename : /dev/sda3
> Magic : 6d746962
> Version : 4
> UUID : 60bf4ee8:e6e3e14f:073e21cd:ed2abb54
> Events : 1
> Events Cleared : 1
> State : OK
> Chunksize : 64 MB
> Daemon : 5s flush period
> Write Mode : Normal
> Sync Size : 29302400 (27.94 GiB 30.01 GB)
> Bitmap : 448 bits (chunks), 0 dirty (0.0%)
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