Arm2Arm
Donnerstag, 3. April 2014
Fixing Ovirt cloned vdsm node.
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In order to accelerate host deployments I was using home-brewed scripts using tar and PXE bott functionality of our nodes. the process is ...
Mittwoch, 26. März 2014
Get rid of T---- files in glusterfs
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If you had a bad performance on the Glusterfs it could be due to the wrong location of the files. If brick was off-line then file goes to a...
Sonntag, 5. Januar 2014
Lustre 2.4.2 performance tests: ZFS vs ext4 backends.
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The fastest mysql performance I have seen on RAID10 with 24 SASx4TB disks. Before testing dd on both was bringing almost 2.5GB/s: seq 1..8...
Got bad lustre OST? Disable it!!
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DEACTIVATE WRITES to OST ========================= mgs:>lctl conf_param fsname-OST0002-osc.osc.active=0 check active/inactive OST:...
Donnerstag, 2. Januar 2014
Lustre upgrading from 2.4.1 to 2.4.2
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For upgrading it is recommended to unmount clients. but if you cannot like in my case, just leave them. Before upgrade make sure that serv...
Shut up the message: "padlock: VIA PadLock Hash Engine not detected."
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If you don't have motherboard with padlock devices on every service lnet start you will get error messages in dmesg: alg: No test for...
Lustre 2.4.2 client on SL 6.x: recompile for older kernels.
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It is fact that on cluster environments is not possible to keep linux kernel up to date. For sure it is recommended time to time update ker...
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