[OpenIndiana-discuss] Simple zfs vs zpool space question.
John McEntee
JMcEntee at stirling-dynamics.com
Mon Apr 14 08:50:39 UTC 2014
>> You had me worried then an doubt my own sanity. I just remove the 2 drives and re-added them.
>
>Well, no intend to worry people. But in this case I think it's better to look a bit closer. Again: are you sure the 2 drives where really removed when you told them to? What did you do to remove them?
>
>To my knowledge the block pointer rewrite project was never addressed, even Matt Ahrens said it's too difficult. So you can't remove a data device from a zpool.
>
>If your zpool iostat output really resembles the actual situation, I think your only option is to attach additional disks to the stale devices.
I can remove the disk and the pool continues to function. I can also the same on another 148 box, but the 151a7 box states they ate logs. I am assuming it is how 148 displays the information, as they seem to remove fine. I have a snv_134 box as weel, but that has no log devices configured to compare with.
Thanks
John
# zpool remove tank c1t500A075103053202d0p2
# zpool remove tank c1t500A07510306F9A7d0p2
# zpool iostat -v
capacity operations bandwidth
pool alloc free read write read write
------------------------- ----- ----- ----- ----- ----- -----
rpool 13.2G 26.5G 0 19 2.99K 88.2K
mirror 13.2G 26.5G 0 19 2.99K 88.2K
c1t5000CCA216DA22DEd0p1 - - 0 9 6.28K 88.5K
c1t500A075103053202d0s0 - - 0 10 5.58K 88.5K
c1t500A07510306F9A7d0s0 - - 0 10 4.58K 88.5K
------------------------- ----- ----- ----- ----- ----- -----
tank 14.2T 4.84T 106 1.33K 5.33M 9.31M
mirror 2.03T 709G 15 194 779K 1.33M
c1t5000CCA225C5244Ed0 - - 3 84 353K 1.33M
c1t5000CCA225C54DDDd0 - - 3 84 355K 1.33M
c1t5000CCA225C505B8d0 - - 3 84 353K 1.33M
mirror 2.03T 709G 15 194 779K 1.33M
c1t5000CCA225C50784d0 - - 3 84 352K 1.33M
c1t5000CCA225C5502Ed0 - - 3 84 355K 1.33M
c1t5000CCA225C49869d0 - - 3 84 354K 1.33M
mirror 2.03T 709G 15 194 780K 1.33M
c1t5000CCA225C54ED8d0 - - 3 84 354K 1.33M
c1t5000CCA225C56814d0 - - 3 84 354K 1.33M
c1t5000CCA225C4E775d0 - - 3 84 353K 1.33M
mirror 2.03T 709G 15 194 779K 1.33M
c1t5000CCA225C2ADDAd0 - - 3 83 353K 1.33M
c1t5000CCA225C04039d0 - - 3 83 354K 1.33M
c1t5000CCA225C53428d0 - - 3 83 354K 1.33M
mirror 2.03T 709G 15 195 780K 1.33M
c1t5000CCA225C50517d0 - - 3 83 355K 1.33M
c1t5000CCA225C55025d0 - - 3 83 354K 1.33M
c1t5000CCA225C5660Dd0 - - 3 83 354K 1.33M
mirror 2.03T 708G 15 194 778K 1.33M
c1t5000CCA225C5502Dd0 - - 3 83 353K 1.33M
c1t5000CCA225C484A3d0 - - 3 83 353K 1.33M
c1t5000CCA225C4824Dd0 - - 3 83 355K 1.33M
mirror 2.03T 709G 15 194 780K 1.33M
c1t5000CCA225C4E366d0 - - 3 84 354K 1.33M
c1t5000CCA225C54DDCd0 - - 3 84 355K 1.33M
c1t5000CCA225C56751d0 - - 3 84 354K 1.33M
cache - - - - - -
c1t500A075103053202d0p3 143G 8M 20 4 464K 479K
c1t500A07510306F9A7d0p3 143G 7.99M 21 4 470K 480K
------------------------- ----- ----- ----- ----- ----- -----
>
> # zpool add tank log c1t500A075103053202d0p2 # zpool add tank log
> c1t500A07510306F9A7d0p2 # zpool iostat -v
> capacity operations bandwidth
> pool alloc free read write read write
> ------------------------- ----- ----- ----- ----- ----- -----
> rpool 13.2G 26.5G 0 19 3.01K 89.2K
> mirror 13.2G 26.5G 0 19 3.01K 89.2K
> c1t5000CCA216DA22DEd0p1 - - 0 9 6.33K 89.6K
> c1t500A075103053202d0s0 - - 0 10 5.60K 89.6K
> c1t500A07510306F9A7d0s0 - - 0 10 4.59K 89.6K
> ------------------------- ----- ----- ----- ----- ----- -----
> tank 13.9T 5.10T 106 1.36K 5.23M 9.47M
> mirror 1.99T 746G 15 199 765K 1.35M
> c1t5000CCA225C5244Ed0 - - 3 86 350K 1.35M
> c1t5000CCA225C54DDDd0 - - 3 86 353K 1.35M
> c1t5000CCA225C505B8d0 - - 3 86 350K 1.35M
> mirror 1.99T 746G 15 199 766K 1.35M
> c1t5000CCA225C50784d0 - - 3 86 349K 1.35M
> c1t5000CCA225C5502Ed0 - - 3 86 352K 1.35M
> c1t5000CCA225C49869d0 - - 3 86 352K 1.35M
> mirror 1.99T 746G 15 199 766K 1.35M
> c1t5000CCA225C54ED8d0 - - 3 86 351K 1.35M
> c1t5000CCA225C56814d0 - - 3 86 351K 1.35M
> c1t5000CCA225C4E775d0 - - 3 86 350K 1.35M
> mirror 1.99T 746G 15 199 765K 1.35M
> c1t5000CCA225C2ADDAd0 - - 3 85 351K 1.35M
> c1t5000CCA225C04039d0 - - 3 85 352K 1.35M
> c1t5000CCA225C53428d0 - - 3 85 352K 1.35M
> mirror 1.99T 746G 15 199 766K 1.35M
> c1t5000CCA225C50517d0 - - 3 85 352K 1.36M
> c1t5000CCA225C55025d0 - - 3 85 352K 1.36M
> c1t5000CCA225C5660Dd0 - - 3 85 351K 1.36M
> mirror 1.99T 745G 15 199 764K 1.35M
> c1t5000CCA225C5502Dd0 - - 3 85 350K 1.35M
> c1t5000CCA225C484A3d0 - - 3 85 351K 1.35M
> c1t5000CCA225C4824Dd0 - - 3 85 352K 1.35M
> mirror 1.99T 746G 15 199 766K 1.35M
> c1t5000CCA225C4E366d0 - - 3 86 351K 1.35M
> c1t5000CCA225C54DDCd0 - - 3 85 352K 1.35M
> c1t5000CCA225C56751d0 - - 3 85 351K 1.35M
> c1t500A075103053202d0p2 3.35M 7.93G 0 98 4.46K 1.32M
> c1t500A07510306F9A7d0p2 3.37M 7.93G 0 22 12.3K 464K
> cache - - - - - -
> c1t500A075103053202d0p3 143G 7.88M 21 4 464K 487K
> c1t500A07510306F9A7d0p3 143G 7.88M 21 4 471K 488K
> ------------------------- ----- ----- ----- ----- ----- -----
>
> #
>
> And it is still not labelling them as logs on the output, I assume this is due to running oi_148 unless I have done something wrong.
>
> I know the logs are not a mirror, but I am going for performance over
> the risk of an ssd failure at the time of a reboot, at which I believe
> I can just throw again the ZIL and continue? According to
> http://docs.oracle.com/cd/E19253-01/819-5461/ghbxs/
>
> Thanks
>
> John
>
>
>
> -----Original Message-----
> From: Michael Hase [mailto:michael at edition-software.de]
> Sent: 11 April 2014 15:59
> To: Discussion list for OpenIndiana
> Subject: Re: [OpenIndiana-discuss] Simple zfs vs zpool space question.
>
> On Fri, 11 Apr 2014, John McEntee wrote:
>
>> I have a zpool (3way mirror and striped across 21 disks), tank, that the zfs and zpool commands differ slightly.
>
> Are you sure it's a 3way mirror pool? Seems like you're running without any redundancy, look at devices c1t500A075103053202d0p2 and c1t500A07510306F9A7d0p2. If one of these breaks I think your pool is toast.
>
> Maybe you wanted to add zil devices and forgot to specify as such? It
> should look something like
>
> zpool iostat -v p1
> capacity operations bandwidth
> pool alloc free read write read write
> ----------- ----- ----- ----- ----- ----- -----
> p1 876G 980G 3 51 106K 295K
> mirror 529G 399G 1 18 47.8K 73.7K
> c4t1d0 - - 0 8 42.0K 74.5K
> c4t2d0 - - 0 8 42.1K 74.5K
> mirror 347G 581G 1 30 58.7K 141K
> c4t0d0 - - 0 12 42.6K 142K
> c4t3d0 - - 0 12 42.7K 142K
> logs - - - - - -
> c3t12d0s3 1.20M 7.94G 0 1 0 80.6K
> cache - - - - - -
> c3t12d0s0 48.0G 8M 1 0 13.9K 20.7K
> ----------- ----- ----- ----- ----- ----- -----
>
>>
>> # zpool list tank
>> NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT
>> tank 19.0T 14.5T 4.51T 76% 1.00x ONLINE -
>>
>> # zfs list tank
>> NAME USED AVAIL REFER MOUNTPOINT
>> tank 14.5T 4.21T 38K /tank
>>
>>
>> There are no quotas. Please could some suggest why zpool states more space is available over zfs?
>
> Metadata?
>
> Cheers,
> Michael
>
>>
>> My average IOPS to each single SATA disk is 90, 1390 across the pool as a whole. Due to pushing each disk fairly hard , if the zpool gets more than 80% full the way free space is allocated changes and we have a severe performance hit. This makes (generally one) VMWare host virtually unusable until I free up some space. Does anyone know if this behaviour changes due to the result of zpool or zfs. i.e. which one should I carefully monitor?
>>
>> Thanks
>>
>> John
>>
>> P.S.
>>
>> # zpool iostat -v
>> capacity operations bandwidth
>> pool alloc free read write read write
>> ------------------------- ----- ----- ----- ----- ----- -----
>> rpool 13.2G 26.5G 0 19 3.01K 89.1K
>> mirror 13.2G 26.5G 0 19 3.01K 89.1K
>> c1t5000CCA216DA22DEd0p1 - - 0 9 6.30K 89.4K
>> c1t500A075103053202d0s0 - - 0 10 5.57K 89.4K
>> c1t500A07510306F9A7d0s0 - - 0 10 4.56K 89.4K
>> ------------------------- ----- ----- ----- ----- ----- -----
>> tank 14.5T 4.51T 106 1.39K 5.23M 10.1M
>> mirror 2.07T 659G 15 199 765K 1.35M
>> c1t5000CCA225C5244Ed0 - - 3 86 350K 1.35M
>> c1t5000CCA225C54DDDd0 - - 3 86 353K 1.35M
>> c1t5000CCA225C505B8d0 - - 3 86 350K 1.35M
>> mirror 2.07T 659G 15 199 765K 1.35M
>> c1t5000CCA225C50784d0 - - 3 86 349K 1.35M
>> c1t5000CCA225C5502Ed0 - - 3 86 352K 1.35M
>> c1t5000CCA225C49869d0 - - 3 86 352K 1.35M
>> mirror 2.07T 659G 15 199 766K 1.35M
>> c1t5000CCA225C54ED8d0 - - 3 86 351K 1.35M
>> c1t5000CCA225C56814d0 - - 3 86 351K 1.35M
>> c1t5000CCA225C4E775d0 - - 3 86 350K 1.35M
>> mirror 2.08T 659G 15 199 765K 1.35M
>> c1t5000CCA225C2ADDAd0 - - 3 85 351K 1.35M
>> c1t5000CCA225C04039d0 - - 3 85 352K 1.35M
>> c1t5000CCA225C53428d0 - - 3 85 352K 1.35M
>> mirror 2.07T 659G 15 199 766K 1.35M
>> c1t5000CCA225C50517d0 - - 3 85 352K 1.36M
>> c1t5000CCA225C55025d0 - - 3 85 352K 1.36M
>> c1t5000CCA225C5660Dd0 - - 3 85 351K 1.36M
>> mirror 2.08T 659G 15 199 764K 1.35M
>> c1t5000CCA225C5502Dd0 - - 3 85 350K 1.35M
>> c1t5000CCA225C484A3d0 - - 3 85 351K 1.35M
>> c1t5000CCA225C4824Dd0 - - 3 85 352K 1.35M
>> mirror 2.07T 659G 15 199 766K 1.35M
>> c1t5000CCA225C4E366d0 - - 3 86 351K 1.35M
>> c1t5000CCA225C54DDCd0 - - 3 85 352K 1.35M
>> c1t5000CCA225C56751d0 - - 3 85 351K 1.35M
>> c1t500A075103053202d0p2 6.89M 7.93G 0 15 1 298K
>> c1t500A07510306F9A7d0p2 6.73M 7.93G 0 15 1 298K
>> cache - - - - - -
>> c1t500A075103053202d0p3 143G 7.86M 20 4 463K 488K
>> c1t500A07510306F9A7d0p3 143G 7.75M 21 4 470K 488K
>> ------------------------- ----- ----- ----- ----- ----- -----
>>
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