mvsas : repeatably disconnects all disks during RAID6 resync
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https://bugzilla.kernel.org/show_bug.cgi?id=14534
Stonefish <[email protected]> changed:
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CC| |iamthestonefishdammit@hotma
| |il.com--- Comment #11 from Stonefish <[email protected]> 2011-07-04 22:44:11 --- Greetings all,
I'm receiving a very similar problem to this, and have been doing so ever since I got three of those same Supermicro AOC-SASLP-MV8 cards six months back. I'm currently running just one, but that doesn't help.
I've created a software raid5, and it's usable. When this error strikes, it does recover. IO performance drops to zero for about a minute or three, but it does come back. Almost always :)
I've tried several kernels since about 2.6.34, vanilla and gentoo alike. Currently on 2.6.39.2.
I was able to write some 140GB of random data to the array yesterday, and it didn't fail until I started running a kvm instance and writing to the virtual disk on it. That kills it every time.
If I don't write large quantities of the data to the array, it remains quite stable. I'm able to read at excellent speeds.
The disks are Seagate ST31500341AS
I'll attach a log file. Is there anything else anyone needs?
Cheers.
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--- Comment #12 from Stonefish <[email protected]> 2011-07-04 22:47:15 --- Created an attachment (id=64642)
--> (https://bugzilla.kernel.org/attachment.cgi?id=64642)/var/log/messages
That's the entire output of /var/log/messages from the time it fails.
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[email protected] changed:
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CC| |[email protected]
--- Comment #13 from [email protected] 2011-07-05 08:25:37 --- Hello,
it seems my problem is also related to the mvsas driver/scsi subsystem:
http://thread.gmane.org/gmane.linux.kernel/1150608
I can reproduce the problem with a simple:
dd if=/dev/zero of=/dev/sdc
I tested this with the newest stable kernel 2.6.39.2 and two different enterprise SATA drives:
* Seagate Constellation ES
* Hitachi Ultrastar 7k3000
I'd like to help debugging this.
Please give some instructions.
Lars
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--- Comment #14 from Stonefish <[email protected]> 2011-07-11 04:56:49 --- Please note that I've updated to the latest firmware on the AOC-SASLP-MV8, and it didn't help any.
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--- Comment #15 from [email protected] 2011-07-14 10:40:58 --- Hi,
I've tested the newsest 3.0-rc7 version and still get the errors. I'll attach the dmesg output.
The crash was provoked with:
# dd if=/dev/zero of=/dev/sdc
* ARECA ARC1300 SAS HBA with latest firmware
* Hitachi Ultrastar 7k3000 SATA disks
* 64 bit kernel
* mvsas driver
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--- Comment #16 from [email protected] 2011-07-14 10:43:05 --- Created an attachment (id=65602)
--> (https://bugzilla.kernel.org/attachment.cgi?id=65602)
dmesg output
beginning of log is missing because of buffer size limitation
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Alan <[email protected]> changed:
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CC| |[email protected] Kernel Version|2.6.31.5 |3.0-rc7
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Alan <[email protected]> changed:
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Status|NEW |RESOLVED
Resolution|--- |OBSOLETE--- Comment #17 from Alan <[email protected]> --- This bug relates to a very old kernel. Closing as obsolete.
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