[SOLVED] ZFS Raid

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shorez

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May 21, 2018
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Hey!
I've accidentally installed my Proxmox on ZFS Raid 0, but I need redundancy.
To rescue this without reinstalling, I thought of adding another pair of Raid-0 SSD's to the system and Raid-1 those Raid0's.
Is this the way of doing? And could someone pls tell the exact ZFS commands to do this?
I'm used Hardware RAID so far and what I want is Raid01 .. Im new to ZFS so I don't know what's the equivalent here.
~shorez
 
From ZFS striped you can convert to ZFS striped/mirror like RAID10

You need only attach disks to existing disks.

BTW. Google about RAID controllers and ZFS for bad work
 
Nemesiz said:
From ZFS striped you can convert to ZFS striped/mirror like RAID10

You need only attach disks to existing disks.

BTW. Google about RAID controllers and ZFS for bad work
Click to expand...

Hey! I know that it's possible.
My intent was to get the exact commands, as a failure wouldn't be tolerable.
Like I've said, I need to add redundancy to my stripe.
How? (Yes I could google myself to hell but probably someone knows it here, which would save my trial and error)
~shorez
 
Mirrored stripes (~RAID01) are not supported in ZFS. Your only option is re-creating the pool.
 
# zpool attach

Example:

1. Lets create stripe pool
Code: 
# zpool create test /zfs_test/file1 /zfs_test/file2

# zpool status test
  pool: test
 state: ONLINE
  scan: none requested
config:

    NAME               STATE     READ WRITE CKSUM
    test               ONLINE       0     0     0
      /zfs_test/file1  ONLINE       0     0     0
      /zfs_test/file2  ONLINE       0     0     0

errors: No known data errors

2. Attaching disks

Code: 
# zpool attach test /zfs_test/file1 /zfs_test/file3
# zpool attach test /zfs_test/file2 /zfs_test/file4

3. Results RAID 10

Code: 
# zpool status test
  pool: test
 state: ONLINE
  scan: resilvered 43K in 0h0m with 0 errors on Fri May 25 15:36:34 2018
config:

    NAME                 STATE     READ WRITE CKSUM
    test                 ONLINE       0     0     0
      mirror-0           ONLINE       0     0     0
        /zfs_test/file1  ONLINE       0     0     0
        /zfs_test/file3  ONLINE       0     0     0
      mirror-1           ONLINE       0     0     0
        /zfs_test/file2  ONLINE       0     0     0
        /zfs_test/file4  ONLINE       0     0     0

errors: No known data errors
 
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Reactions: MaddMartigan
Hm, you're right. IDK why I thought of mirroring the stripe set. A similar procedure is followed when replacing a disk in a stripe of mirrors. I guess the example you posted was OP's request anyway...
 
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