zfsnotes:notes_sur_zfs
Différences
Ci-dessous, les différences entre deux révisions de la page.
| Prochaine révision | Révision précédente | ||
| zfsnotes:notes_sur_zfs [2018/09/21 15:28] – créée ghusson | zfsnotes:notes_sur_zfs [2023/04/04 13:22] (Version actuelle) – ghusson | ||
|---|---|---|---|
| Ligne 1: | Ligne 1: | ||
| **List disks by ID** | **List disks by ID** | ||
| - | < | + | < |
| + | ls -alh / | ||
| + | </ | ||
| Help : make correspondances with disks by-path : | Help : make correspondances with disks by-path : | ||
| - | < | + | < |
| + | ls -alh / | ||
| + | </ | ||
| An other view : | An other view : | ||
| - | < | + | < |
| + | lsblk -o NAME, | ||
| + | </ | ||
| + | **Create zpool of RAIDZ1 type**, named " | ||
| + | Notes : The ashift needs to be set at least to the sector-size of the underlying disks (2 to the power of ashift is the sector-size), | ||
| - | + | < | |
| - | **Create zpool of RAIDZ1 type**, named " | + | |
| - | < | + | |
| zpool create -f zp1 raidz1 -o ashift=12 / | zpool create -f zp1 raidz1 -o ashift=12 / | ||
| </ | </ | ||
| **Get some info about it :** | **Get some info about it :** | ||
| - | < | + | < |
| + | zpool list | ||
| zpool status -Pv zp1 | zpool status -Pv zp1 | ||
| zpool get all | zpool get all | ||
| Ligne 24: | Ligne 31: | ||
| RQ : by default, it is mounted over /zp1 | RQ : by default, it is mounted over /zp1 | ||
| - | < | + | < |
| + | zfs get all | ||
| # You see the mount point here ! | # You see the mount point here ! | ||
| </ | </ | ||
| Ligne 31: | Ligne 39: | ||
| - 1 partition, size = memory size / 2 | - 1 partition, size = memory size / 2 | ||
| - 1 partition with the lefting space | - 1 partition with the lefting space | ||
| - | < | + | < |
| + | zpool add zp1 log / | ||
| zpool add zp1 cache / | zpool add zp1 cache / | ||
| zpool status -Pv zp1 | zpool status -Pv zp1 | ||
| </ | </ | ||
| - | |||
| - | |||
| **REVERT :** | **REVERT :** | ||
| - | < | + | < |
| zpool remove zp1 / | zpool remove zp1 / | ||
| zpool remove zp1 / | zpool remove zp1 / | ||
| zpool destroy zp1 | zpool destroy zp1 | ||
| </ | </ | ||
| - | |||
| **TESTS** | **TESTS** | ||
| - | < | + | < |
| + | apt-get install fio | ||
| echo 3 > / | echo 3 > / | ||
| Ligne 61: | Ligne 68: | ||
| # 3 SAS 10k disks, 80GB, SLOG 20GB, CACHE 120GB | # 3 SAS 10k disks, 80GB, SLOG 20GB, CACHE 120GB | ||
| # before each test, run : echo 3 > / | # before each test, run : echo 3 > / | ||
| - | < | + | < |
| READ: io=272184KB, | READ: io=272184KB, | ||
| WRITE: io=64730KB, aggrb=2014KB/ | WRITE: io=64730KB, aggrb=2014KB/ | ||
| Ligne 67: | Ligne 74: | ||
| # remove CACHE | # remove CACHE | ||
| - | < | + | < |
| zpool remove zp1 / | zpool remove zp1 / | ||
| Ligne 75: | Ligne 82: | ||
| # remove SLOG | # remove SLOG | ||
| - | < | + | < |
| zpool remove zp1 / | zpool remove zp1 / | ||
| Ligne 81: | Ligne 88: | ||
| WRITE: io=50655KB, aggrb=1489KB/ | WRITE: io=50655KB, aggrb=1489KB/ | ||
| </ | </ | ||
| + | |||
| + | |||
| + | **Compare to MD (soft raid) RAID5 over same 3 disks :** | ||
| + | Run status group 0 (all jobs): | ||
| + | READ: io=139365KB, | ||
| + | WRITE: io=34421KB, aggrb=981KB/ | ||
zfsnotes/notes_sur_zfs.1537543707.txt.gz · Dernière modification : 2018/09/21 15:28 de ghusson