[kwlug-disc] Filesystems for backups

[Mikalai Birukou]

> On 2019-08-07 5:49 p.m., Paul Nijjar via kwlug-disc wrote:
>> ZFS with FreeNAS or Ubuntu (using ZFS on Linux), raidz
>> ------------------------------------------------------ 

I want to provide further illustration. Here, 
https://stackoverflow.com/questions/44375657/how-to-remove-a-device-disk-from-zpool-where-there-is-no-redundancy 
, there is a listing of someone's pool

```

|NAME STATE READ WRITE CKSUM pdx-zfs-02 DEGRADED 0 0 0 raidz2-0 DEGRADED 
0 0 0 gptid/c459110a-a73c-1a49-b12c-f03fbec6eca6 FAULTED 158 25.3K 0 too 
many errors gptid/8c87e988-7832-1e44-9c45-abe95ee2d8f7 ONLINE 0 0 0 
gptid/3b4be4d0-136e-41e3-c546-d5c4ba2b3142 ONLINE 0 0 0 
gptid/209e8c9c-ff66-6f6a-e38b-9045c0b6c3ec ONLINE 0 0 0 
gptid/ea8b834a-0692-464b-fd29-a877bf8f7bb9 ONLINE 0 0 0 
gptid/cf35d740-ea0b-bae6-9e4f-b7a31d66ab1d ONLINE 0 0 0 
gptid/fe908e73-c93b-72ed-d4bb-9eae78bcc5b6 ONLINE 0 0 0 
gptid/bdf03e4d-ba71-a4cc-dd90-edfd6446bac3 ONLINE 0 0 0 
gptid/302bacc1-273a-54c9-c8f9-f458640b0d60 ONLINE 0 0 0 
gptid/d94ea326-d5aa-f062-9662-953908ce0b53 ONLINE 0 0 0 raidz2-1 ONLINE 
0 0 0 gptid/3c1b1d3b-3977-11e6-b1f0-0025902b035a ONLINE 0 0 0 
gptid/3ec0ba4a-3977-11e6-b1f0-0025902b035a ONLINE 0 0 0 
gptid/40d8b781-3977-11e6-b1f0-0025902b035a ONLINE 0 0 0 
gptid/43387eae-3977-11e6-b1f0-0025902b035a ONLINE 0 0 0 
gptid/45800439-3977-11e6-b1f0-0025902b035a ONLINE 0 0 0 
gptid/47df2694-3977-11e6-b1f0-0025902b035a ONLINE 0 0 0 da2 ONLINE 0 0 0 |

|```|
||

|Note that pool |||pdx-zfs-02| consists of two |||raidz2| devices with 
different numbers of disks in them and a disk da2. You can have pool to 
be very heterogeneous.|

|Also note that when one device is not in ideal state, i.e. degraded, 
the whole pool is marked degraded. But repair of that device will 
involve disk from that device.
|

|This article talks about how to remove that da2. Data from it should be 
drained to the rest of the pool before being removed, in an ideal world. 
Is it implemented already? I don't know. There are spots even on the Sun 
:) .
|

|I have a very high usability requirements at CLI, and ZFS' simplicity 
of Admin Experience (AE) sold me immediately. Of cause, this sort of 
assortment of disks is a server world scenario. I wonder what UX 
benefits of ZFS on desktop are, where I don't know how to spell 
b-a-c-k-u-p :) .
|

||
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://kwlug.org/pipermail/kwlug-disc_kwlug.org/attachments/20190807/b5215d8e/attachment.htm>