>> PS: The reason I think of this, is I have a pool which is rather badly
>> balanced
>> due to a bad combination of little time and (at that moment) little zfs
>> knowledge,
>> so currently two VDEVs are >95% full, and AFAIK there's no way to fix that
>> except
>> (a) reconfigure everything or (b) by magick or BPR, which may be similar :P
> What problem are you having in particular? My colleague George Wilson has
> done some
> work to improve performance on imbalanced vdevs, which may be sufficient for
> you.
> Be sure you are running a build with the fix for 1051 , integrated in May
> 2011.
The issue we're seeing is rather terrible performance, especially during scrub,
on this system. It has sufficient amounts of L2ARC (10x256GB) and SLOG (a 100GB
mirror) (see attached zpool iostat -v - the mirror with c14t21d0 and c14t22d0
are the SLOG devs). It's still at oi_148, so perhaps just an upgrade to 151
might help? Or will I need to patch the system with later code?
Vennlige hilsener / Best regards
roy
--
Roy Sigurd Karlsbakk
(+47) 97542685
[email protected]
http://blogg.karlsbakk.net/
--
I all pedagogikk er det essensielt at pensum presenteres intelligibelt. Det er
et elementært imperativ for alle pedagoger å unngå eksessiv anvendelse av
idiomer med fremmed opprinnelse. I de fleste tilfeller eksisterer adekvate og
relevante synonymer på norsk.
roy@urd:~$ zpool iostat -v
capacity operations bandwidth
pool alloc free read write read write
------------ ----- ----- ----- ----- ----- -----
dpool 66.0T 12.8T 422 137 26.0M 3.99M
raidz2 15.0T 4.00T 109 20 6.74M 370K
c7t2d0 - - 48 12 1.74M 76.8K
c7t3d0 - - 48 12 1.74M 76.8K
c7t4d0 - - 47 12 1.74M 76.8K
c7t5d0 - - 47 12 1.74M 76.8K
c7t6d0 - - 47 12 1.74M 76.8K
c7t7d0 - - 47 12 1.74M 76.8K
c8t0d0 - - 50 13 1.74M 76.8K
raidz2 18.1T 923G 116 20 7.40M 446K
c8t1d0 - - 53 12 1.83M 91.8K
c8t2d0 - - 53 12 1.83M 91.8K
c8t3d0 - - 53 12 1.82M 91.8K
c8t4d0 - - 53 12 1.82M 91.8K
c8t5d0 - - 52 12 1.83M 91.8K
c8t6d0 - - 53 12 1.82M 91.8K
c8t7d0 - - 53 12 1.82M 91.8K
raidz2 18.5T 466G 114 19 7.38M 464K
c9t0d0 - - 53 12 1.86M 95.3K
c9t1d0 - - 53 12 1.86M 95.3K
c9t2d0 - - 54 12 1.86M 95.3K
c9t3d0 - - 53 12 1.86M 95.3K
c9t4d0 - - 54 12 1.86M 95.3K
c9t5d0 - - 54 12 1.86M 95.3K
c9t6d0 - - 54 12 1.86M 95.3K
mirror 6.53M 93.0G 0 44 277 1.85M
c14t21d0 - - 0 44 278 1.85M
c14t22d0 - - 0 44 278 1.85M
raidz2 14.4T 7.40T 81 32 4.50M 910K
c14t9d0 - - 29 14 687K 93.8K
c14t10d0 - - 29 14 688K 94.0K
c14t11d0 - - 29 14 691K 93.7K
c14t12d0 - - 29 14 689K 93.7K
c14t13d0 - - 29 14 687K 94K
c14t14d0 - - 29 14 690K 93.8K
c14t15d0 - - 28 14 690K 93.8K
c14t16d0 - - 29 14 687K 94.0K
c14t17d0 - - 29 14 690K 93.7K
c14t18d0 - - 29 14 688K 93.7K
c14t19d0 - - 29 14 686K 94.0K
c14t20d0 - - 29 14 689K 93.8K
cache - - - - - -
c14t23d0 238G 8M 3 1 114K 205K
c14t24d0 238G 8M 3 1 115K 205K
c14t25d0 238G 7.83M 3 1 116K 207K
c14t26d0 238G 8M 3 1 116K 205K
c14t27d0 238G 7.83M 3 1 114K 206K
c14t28d0 238G 8M 3 1 115K 206K
c14t29d0 238G 7.86M 3 1 115K 205K
c14t30d0 238G 7.70M 2 1 115K 205K
c14t31d0 238G 7.83M 2 1 96.2K 203K
c14t32d0 238G 7.98M 2 1 95.7K 204K
------------ ----- ----- ----- ----- ----- -----
rpool 58.3G 90.7G 6 10 125K 48.2K
mirror 58.3G 90.7G 6 10 125K 48.2K
c7t1d0s0 - - 2 5 146K 48.4K
c7t0d0s0 - - 2 5 146K 48.4K
------------ ----- ----- ----- ----- ----- -----
-------------------------------------------
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