Hello,
Can someone clarify my confusion related to "trim" and freenas zfs pool on SSD.
I found this thread:
https://www.ixsystems.com/community/threads/ssd-pool-trim-missbehaving.55221/
after looking why stats for my SSD shows big red "delete" counters (comparing to "write" and "read")
On this pool I keep zvols for bhyve VM's (at time of above capture there was only one Windows 10 running).
I'm using
Flowing related post, I have also check zfs "trim" stats:
# sysctl -a |grep _trim
kstat.zfs.misc.zio_trim.failed: 0
kstat.zfs.misc.zio_trim.unsupported: 15266
kstat.zfs.misc.zio_trim.success: 10901023
kstat.zfs.misc.zio_trim.bytes: 1304282636288
Here "success" and "bytes" values are constantly growing.
I'm worried that my SSD will suffer - am I wrong?
Or this is strictly normal behavior, and correctly working system with SSD will always show "delete's" on monitoring and "trim" on sysctl?
I was not able to find details about how to read "stat.zfs.misc.zio_trim" properly.
Anyone can explain?
Thanks to anyone reading up to this point :)
Can someone clarify my confusion related to "trim" and freenas zfs pool on SSD.
I found this thread:
https://www.ixsystems.com/community/threads/ssd-pool-trim-missbehaving.55221/
after looking why stats for my SSD shows big red "delete" counters (comparing to "write" and "read")
On this pool I keep zvols for bhyve VM's (at time of above capture there was only one Windows 10 running).
I'm using
Build | FreeNAS-11.1-U7 |
---|---|
Platform | Intel(R) Core(TM) i5-2500T CPU @ 2.30GHz |
Memory | 16288MB |
Flowing related post, I have also check zfs "trim" stats:
# sysctl -a |grep _trim
kstat.zfs.misc.zio_trim.failed: 0
kstat.zfs.misc.zio_trim.unsupported: 15266
kstat.zfs.misc.zio_trim.success: 10901023
kstat.zfs.misc.zio_trim.bytes: 1304282636288
Here "success" and "bytes" values are constantly growing.
I'm worried that my SSD will suffer - am I wrong?
Or this is strictly normal behavior, and correctly working system with SSD will always show "delete's" on monitoring and "trim" on sysctl?
I was not able to find details about how to read "stat.zfs.misc.zio_trim" properly.
Anyone can explain?
Thanks to anyone reading up to this point :)