Différences
Ci-dessous, les différences entre deux révisions de la page.
| Prochaine révision | Révision précédente | ||
| newsfeed:20141007 [2014/10/07 10:39] – ltaulell | newsfeed:20141007 [2020/08/25 15:58] (Version actuelle) – modification externe 127.0.0.1 | ||
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| Ligne 3: | Ligne 3: | ||
| Explanations will be long, take a coffee, a tea, or quit ;o) | Explanations will be long, take a coffee, a tea, or quit ;o) | ||
| - | Last week, we experienced a threshold effect (again) while adding new nodes | + | Last week, we experienced a threshold effect (again) while adding new nodes to E5 cluster. It lead us to reboot a big part of debian nodes. Doing this open a Murphy' |
| - | to E5 cluster. It lead us to reboot a big part of debian nodes. Doing this | + | |
| - | open a Murphy' | + | |
| - | - an electrical problem appear where we add the new nodes, on the same | + | * an electrical problem appear where we add the new nodes, on the same distribution unit of a block of x5570, including their scratch servers. |
| - | | + | |
| -> unexpected reboots while trying to figure out what's going on. | -> unexpected reboots while trying to figure out what's going on. | ||
| - | - new E5 nodes cannot connect to " | + | * new E5 nodes cannot connect to " |
| -> nodes need a new infiniband card firmware, and reboot | -> nodes need a new infiniband card firmware, and reboot | ||
| -> OS kernel need an upgrade, which need to be propagated | -> OS kernel need an upgrade, which need to be propagated | ||
| -> some infiniband cables wont work anymore (wires need an upgrade, maybe) | -> some infiniband cables wont work anymore (wires need an upgrade, maybe) | ||
| - | - new E5 infiniband switch cannot connect to " | + | * new E5 infiniband switch cannot connect to " |
| - | | + | |
| -> old switchs need a new firmware, and reboot | -> old switchs need a new firmware, and reboot | ||
| - | -> a special machine, with a very early OS, with experimental libs is needed | + | -> a special machine, with a very early OS, with experimental libs is needed to upgrade switchs |
| - | to upgrade switchs | + | |
| - | - old E5 nodes bios is incompatible with new infiniband card firmware... | + | * old E5 nodes bios is incompatible with new infiniband card firmware... |
| -> all E5 nodes need to be bios upgraded, and reboot | -> all E5 nodes need to be bios upgraded, and reboot | ||
| - | - with all theses, scratch has become incoherent, checkfs needed... | + | * with all theses, scratch has become incoherent, checkfs needed... |
| - | And now ? Upgrades are (mostly) OK, scratch has been checked and is OK. | + | And now ? Upgrades are (mostly) OK, scratch has been checked and is OK. Some E5 nodes are not OK, and have been pushed away from queuing system. |
| - | Some E5 nodes are not OK, and have been pushed away from queuing system. | + | |