Zfs
增長 ZFS 鏡像
我有一個 RAID 10 配置中包含 6 個磁碟的 ZFS 池。
我想將其中一個鏡像中的驅動器從 1TB 升級到 3TB。我在系統中安裝了所有驅動器。
我不希望通過更換一個驅動器，重新同步，重複來做到這一點。有沒有辦法從現有鏡像中執行所有讀取操作，同時保持我要移除的驅動器上的所有磨損？
root@e7-4860:~# zpool status pool: stuffpoll state: ONLINE scan: scrub repaired 0 in 6h50m with 0 errors on Sun Dec 10 07:14:34 2017 config: NAME STATE READ WRITE CKSUM stuffpoll ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 ata-HGST_HTS721010A9E630_JR10004M0LGN6E-part1 ONLINE 0 0 0 ata-HGST_HTS721010A9E630_JR10004M0M17TE-part1 ONLINE 0 0 0 mirror-1 ONLINE 0 0 0 ata-HGST_HTS541010A9E680_JA1000102MG9UR-part1 ONLINE 0 0 0 ata-HGST_HTS541010A9E680_JA1009C03158BP-part1 ONLINE 0 0 0 mirror-2 ONLINE 0 0 0 ata-HGST_HTS721010A9E630_JR100X6P2TJKVE ONLINE 0 0 0 ata-HGST_HTS721010A9E630_JR100Y4M01200M ONLINE 0 0 0 errors: No known data errors root@e7-4860:~# zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT stuffpoll 2.72T 2.47T 254G - 48% 90% 1.00x ONLINE - root@e7-4860:~# ls /dev/disk/by-id/ -1 ata-CT240BX200SSD1_1613F0194817 ata-CT240BX200SSD1_1613F0194817-part1 ata-HGST_HTS541010A9E680_JA1000102MG9UR ata-HGST_HTS541010A9E680_JA1000102MG9UR-part1 ata-HGST_HTS541010A9E680_JA1000102MG9UR-part9 ata-HGST_HTS541010A9E680_JA1009C03158BP ata-HGST_HTS541010A9E680_JA1009C03158BP-part1 ata-HGST_HTS541010A9E680_JA1009C03158BP-part9 ata-HGST_HTS721010A9E630_JR10004M0LGN6E ata-HGST_HTS721010A9E630_JR10004M0LGN6E-part1 ata-HGST_HTS721010A9E630_JR10004M0LGN6E-part9 ata-HGST_HTS721010A9E630_JR10004M0M17TE ata-HGST_HTS721010A9E630_JR10004M0M17TE-part1 ata-HGST_HTS721010A9E630_JR10004M0M17TE-part9 ata-HGST_HTS721010A9E630_JR100X6P2TJKVE ata-HGST_HTS721010A9E630_JR100X6P2TJKVE-part1 ata-HGST_HTS721010A9E630_JR100X6P2TJKVE-part9 ata-HGST_HTS721010A9E630_JR100Y4M01200M ata-HGST_HTS721010A9E630_JR100Y4M01200M-part1 ata-HGST_HTS721010A9E630_JR100Y4M01200M-part9 scsi-35000c50055fb009b scsi-35000c50055fb395f我想最終
mirror-1用scsi-35000c50055fb009b和替換驅動器scsi-35000c50055fb395f
如果您想手動擴展卷，您只需使用該
-e選項將其聯機即可。zpool online -e stuffpoll您還可以切換自動擴展選項以使其自動發生。
zpool set autoexpand=on stuffpoll因此，假設您正在向 mirror-2 添加新驅動器，以便您可以擴展它。您需要使用現有設備名稱之一作為目標來連接新驅動器。您可以在刪除舊設備之前將這兩個新設備添加到鏡像中。
# zpool attach pool existing_vdev_member new_device zpool attach stuffpoll ata-HGST_HTS721010A9E630_JR100X6P2TJKVE new_dev1 zpool attach stuffpoll ata-HGST_HTS721010A9E630_JR100X6P2TJKVE new_dev2新設備同步完成後，您可以移除舊設備。
zpool detach stuffpoll ata-HGST_HTS721010A9E630_JR100X6P2TJKVE zpool detach stuffpoll ata-HGST_HTS721010A9E630_JR100Y4M01200M男人 zpool
zpool attach [-f] pool device new_device Attaches new_device to an existing zpool device. The existing device cannot be part of a raidz configuration. If device is not currently part of a mirrored configuration, device automatically transforms into a two-way mirror of device and new_device. If device is part of a two-way mirror, attaching new_device creates a three-way mirror, and so on. In either case, new_device begins to resilver immediately. ... zpool detach pool device Detaches device from a mirror. The operation is refused if there are no other valid replicas of the data. If device may be re-added to the pool later on then consider the zpool offline command instead. ... zpool online [-e] pool device ... Brings the specified physical device online. -e Expand the device to use all available space. If the device is part of a mirror or raidz then all devices must be expanded before the new space will become available to the pool.連結
- https://www.freebsd.org/cgi/man.cgi?zpool(8)
- http://www.c0t0d0s0.org/archives/6224-You-dont-need-zfs-resize-...-and-a-workaround-when-you-need-one-;.html
另外，我喜歡提醒人們。首先驗證您的備份/恢復。總是有可能發生不好的事情。還可以考慮在測試機器/VM 上建構一個 zfs 池並提前練習您的命令。