Différences
Ci-dessous, les différences entre deux révisions de la page.
Les deux révisions précédentes Révision précédente Prochaine révision | Révision précédente | ||
ubuntu:mdadm [2015-Dec-02 20:04] – MOLINIER Etienne | ubuntu:mdadm [2018-Sep-18 22:39] (Version actuelle) – modification externe 127.0.0.1 | ||
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=====Improving rebuild-speed===== | =====Improving rebuild-speed===== | ||
- | ====Tip #1: / | + | ===Tip #1: / |
This tip is **not** very efficient on my setup. | This tip is **not** very efficient on my setup. | ||
<code bash> | <code bash> | ||
Ligne 31: | Ligne 31: | ||
</ | </ | ||
- | ====Tip #2: Set read-ahead option==== | + | ===Tip #2: Set read-ahead option=== |
This tip **is very efficient** on my setup. | This tip **is very efficient** on my setup. | ||
<code bash> | <code bash> | ||
Ligne 38: | Ligne 38: | ||
</ | </ | ||
- | ====Tip #3: Set stripe-cache_size for RAID5 or RAID 6==== | + | ===Tip #3: Set stripe-cache_size for RAID5 or RAID 6=== |
<code bash> | <code bash> | ||
echo 32768 > / | echo 32768 > / | ||
</ | </ | ||
- | ====Tip #4: Disable NCQ on all disks==== | + | ===Tip #4: Disable NCQ on all disks=== |
This tip is not useful since NCQ (Native Command Queing) is not supported by my hardware... | This tip is not useful since NCQ (Native Command Queing) is not supported by my hardware... | ||
<code bash> | <code bash> | ||
Ligne 52: | Ligne 52: | ||
</ | </ | ||
- | ====Tip #5: Bitmap Option==== | + | ===Tip #5: Bitmap Option=== |
This tip does **not work** when the array is already in resync state ! | This tip does **not work** when the array is already in resync state ! | ||
<code bash> | <code bash> |