Hi All.
For two years im running zfs and iscsi with version 9.1xx on a Dell R720 which served database via iscsi.
Its replicated nvia zfs send to a same hardware.
The servers have a small mirror disks for the nas4free and 12 4tb drives as hardware raid 6 acting as zfs pool.
In the last month i had 4 faulty 4tb drives.
In the last faulty drive dell asked to upgrade the firmware and bios of the server before replacing it.
THIS WAS A MISTAKE PROBABLY.
After the upgrade the nas4free has panic at boot.
I have reinstalled it without the large disks restored the configuration and once i have added the large drive boom panic. (without the zfa disks it boots)
I have installed a new version 9.3 and the data is there no panic.
But the performance is sucksssss.
Usually the server read the data at 40MB+ (looking at the server and the network util and also zpool iostat on the nas4free).
After the new os i was forced to upgrade im seeing 30MB read on the freenas but only 2 to 3MB on the server and network.
I have asked. Dell to replace the raid card and the backplane disks and all is the same.
The second storage works great.
I have no idea what do next?
Please share your thoughts.
Thanks in advanced
David
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Its not possible for us to export from here and import it to the main forum!
Kernel Panic and bad luck.
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Duduhandelman
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Duduhandelman
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Re: Kernel Panic and bad luck.
And i posted in zfs beacuse i assume its a zfs issue.
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crowi
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Re: Kernel Panic and bad luck.
how did you configure this? hardware RAID 6 and ZFS pool seems contra productive, as the sytem needs direct access to the disks without a HW RAID layer inbetween.12 4tb drives as hardware raid 6 acting as zfs pool.
you may clone the system from your backup machine and check if it works better againIts replicated nvia zfs send to a same hardware
and first you should go through this http://n4f.siftusystems.com/index.php/2 ... /comments/
to identify the bottleneck.
NAS 1: Milchkuh: Asrock C2550D4I, Intel Avoton C2550 Quad-Core, 16GB DDR3 ECC, 5x3TB WD Red RaidZ1 +60 GB SSD for ZIL/L2ARC, APC-Back UPS 350 CS, NAS4Free 11.0.0.4.3460 embedded
NAS 2: Backup: HP N54L, 8 GB ECC RAM, 4x4 TB WD Red, RaidZ1, NAS4Free 11.0.0.4.3460 embedded
NAS 3: Office: HP N54L, 8 GB ECC RAM, 2x3 TB WD Red, ZFS Mirror, APC-Back UPS 350 CS NAS4Free 11.0.0.4.3460 embedded
NAS 2: Backup: HP N54L, 8 GB ECC RAM, 4x4 TB WD Red, RaidZ1, NAS4Free 11.0.0.4.3460 embedded
NAS 3: Office: HP N54L, 8 GB ECC RAM, 2x3 TB WD Red, ZFS Mirror, APC-Back UPS 350 CS NAS4Free 11.0.0.4.3460 embedded
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Duduhandelman
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Re: Kernel Panic and bad luck.
Thanka Crowi.
I appreciate your response.
I have no time to replicate this its 20TB.
Forgot to say writes working perfect rate above 300MB.
Thanks
David
I appreciate your response.
I have no time to replicate this its 20TB.
Forgot to say writes working perfect rate above 300MB.
Thanks
David
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Duduhandelman
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Re: Kernel Panic and bad luck.
Downgrading the firmware of raid dell mini p710 made a great improvement. But for some reason the zfs iostat is double then the netwrok throughput.
It wasn't like this in the past. All the activity ia one server that reads with iscsi.
It wasn't like this in the past. All the activity ia one server that reads with iscsi.