action #162719
Updated by okurz 22 days ago
## Motivation
w40 ran out of space in /var/lib/openqa despite having another partition with multiple TB free space. We should reconsider the choices we made for setting up OSD PRG2 workers.
```
# lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
nvme0n1 259:1 0 5.8T 0 disk
├─nvme0n1p1 259:2 0 512M 0 part /boot/efi
├─nvme0n1p2 259:3 0 5.8T 0 part /var
…
│ /
└─nvme0n1p3 259:4 0 1G 0 part [SWAP]
nvme2n1 259:5 0 476.9G 0 disk
└─md127 9:127 0 476.8G 0 raid0 /var/lib/openqa
# hdparm -tT /dev/nvme?n1
/dev/nvme0n1:
Timing cached reads: 30178 MB in 1.99 seconds = 15202.23 MB/sec
Timing buffered disk reads: 6360 MB in 3.00 seconds = 2120.00 MB/sec
/dev/nvme2n1:
Timing cached reads: 33204 MB in 1.98 seconds = 16739.11 MB/sec
Timing buffered disk reads: 8478 MB in 3.00 seconds = 2825.74 MB/sec
```
nvme2n1 seems to be faster but is more limited in space. Maybe nevertheless use pool on nvme0? Or combine using nvme2n1 as smart backing cache?
## Rollback steps
* Revert https://gitlab.suse.de/openqa/salt-pillars-openqa/-/merge_requests/850
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