Re:An Introduction to ZFS
by mehlmao on Friday November 20, 2020 @10:58AM
(#25161625)
There's a hacky workaround, but it depends on how many drives you have and what your tolerance for downtime is. I had 2x8TB drives in RAIDZ1 configuration (sda, sdb), and I added an extra 8TB drive (sdc).
My solution was:
offlining one drive (sdb), degrading vpool1
creating a vpool2 in RAIDZ1, with sdb, sdc, and an 8TB sparse file on a flash drive
offlining the sparse file, degrading vpool2
sending a ZFS snapshot from vpool1 to vpool2
destroying vpool1, and adding sda to vpool2 to replace the sparse file
Re:An Introduction to ZFS
by iooi on Friday November 20, 2020 @12:28PM
(#25162683)
This is unnecessarily complex, you can just offline a drive, remove the disk, insert the new disk, and replace the offline drive with the new disk. ZFS will resilver the new disk.
My solution was:
offlining one drive (sdb), degrading vpool1
creating a vpool2 in RAIDZ1, with sdb, sdc, and an 8TB sparse file on a flash drive
offlining the sparse file, degrading vpool2
sending a ZFS snapshot from vpool1 to vpool2
destroying vpool1, and adding sda to vpool2 to replace the sparse file