NetApp and Solaris: Difference between revisions

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ssd-config-list="NETAPP  LUN", "physical-block-size:4096, retries-busy:30, retries-reset:30, retries-notready:300, retriestimeout:10, throttle-max:64, throttle-min:8";
ssd-config-list="NETAPP  LUN", "physical-block-size:4096, retries-busy:30, retries-reset:30, retries-notready:300, retriestimeout:10, throttle-max:64, throttle-min:8";
###### END changes by host_config ####
###### END changes by host_config ####
</source>
</syntaxhighlight>


===Check it out===
===Check it out===
<source lang=bash>
<source lang=bash>
# iostat -Er | /opt/sfw/bin/gawk 'BEGIN{command="echo ::ssd_state | mdb -k"; while(command|getline){if(/^un [0-9]+:/ && $NF != "0"){ssd=$2;gsub(/:$/,"",ssd);while(!/^}/){command|getline;if(/un_phy_blocksize/){un_phy_blocksize[ssd]=strtonum($NF);}}}};close(command);}/ssd/{ssd=$1;gsub(/^ssd/,"",ssd);getline;split($0,vendor,",");printf "ssd: %s\tun_phy_blocksize: %d\t%s\t%s\n",ssd,un_phy_blocksize[ssd],vendor[1],vendor[4];}'
# iostat -Er | /opt/sfw/bin/gawk 'BEGIN{command="echo ::ssd_state | mdb -k"; while(command|getline){if(/^un [0-9]+:/ && $NF != "0"){ssd=$2;gsub(/:$/,"",ssd);while(!/^}/){command|getline;if(/un_phy_blocksize/){un_phy_blocksize[ssd]=strtonum($NF);}}}};close(command);}/ssd/{ssd=$1;gsub(/^ssd/,"",ssd);getline;split($0,vendor,",");printf "ssd: %s\tun_phy_blocksize: %d\t%s\t%s\n",ssd,un_phy_blocksize[ssd],vendor[1],vendor[4];}'
</source>
</syntaxhighlight>


==Alignment and ZFS==
==Alignment and ZFS==
Line 60: Line 60:
                 Read-Only: disabled
                 Read-Only: disabled
...
...
</source>
</syntaxhighlight>
Or use "lun alignment show":
Or use "lun alignment show":
<source lang=bash>
<source lang=bash>
Line 85: Line 85:
                 Partial writes percentage: 0
                 Partial writes percentage: 0
                 Partial reads percentage: 14
                 Partial reads percentage: 14
</source>
</syntaxhighlight>


Or "stats show lun":
Or "stats show lun":
<source lang=bash>
<source lang=bash>
filer01*> stats show -e lun:/vol/TEMP201:.*_align_histo.*
filer01*> stats show -e lun:/vol/TEMP201:.*_align_histo.*
</source>
</syntaxhighlight>


===ashift=12? Why 12?===
===ashift=12? Why 12?===
Line 96: Line 96:
# echo "2^12" | bc -l
# echo "2^12" | bc -l
4096
4096
</source>
</syntaxhighlight>
OK... 4k... I see.
OK... 4k... I see.


Line 107: Line 107:
             ashift: 9
             ashift: 9
...
...
</source>
</syntaxhighlight>


===Create ZPools on NetApp LUNs with this syntax===
===Create ZPools on NetApp LUNs with this syntax===
<source lang=bash>
<source lang=bash>
# zpool create -o ashift=12 <mypool> mirror <vdev1> <vdev2>
# zpool create -o ashift=12 <mypool> mirror <vdev1> <vdev2>
</source>
</syntaxhighlight>


===Solaris Cluster===
===Solaris Cluster===
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ncl01-iscsi-svm1    /vol/vol_cyrus01/lun_tz_cyrus01_3      /dev/rdsk/c0t600A0980383033777B244834556D4867d0s2 iscsi0    iSCSI      500.1g  C    d7
ncl01-iscsi-svm1    /vol/vol_cyrus01/lun_tz_cyrus01_3      /dev/rdsk/c0t600A0980383033777B244834556D4867d0s2 iscsi0    iSCSI      500.1g  C    d7
...
...
</source>
</syntaxhighlight>


==Links==
==Links==
* [http://wiki.illumos.org/display/illumos/List+of+sd-config-list+entries+for+Advanced-Format+drives Illumos: List of sd-config-list entries for Advanced-Format drives]
* [http://wiki.illumos.org/display/illumos/List+of+sd-config-list+entries+for+Advanced-Format+drives Illumos: List of sd-config-list entries for Advanced-Format drives]
* [https://kb.netapp.com/index?page=content&id=3011193 NetApp: What is an unaligned I/O?]
* [https://kb.netapp.com/index?page=content&id=3011193 NetApp: What is an unaligned I/O?]

Revision as of 16:25, 25 November 2021

Solaris NetApp Just some unsorted lines... Working on it... don't believe what you can read here! It is not proofed for now.


Settings in Solaris

Settings for MPxIO over FC:

/kernel/drv/ssd.conf

<source lang=bash>

            1. START changes by host_config #####

ssd-config-list="NETAPP LUN", "physical-block-size:4096, retries-busy:30, retries-reset:30, retries-notready:300, retriestimeout:10, throttle-max:64, throttle-min:8";

            1. END changes by host_config ####

</syntaxhighlight>

Check it out

<source lang=bash>

  1. iostat -Er | /opt/sfw/bin/gawk 'BEGIN{command="echo ::ssd_state | mdb -k"; while(command|getline){if(/^un [0-9]+:/ && $NF != "0"){ssd=$2;gsub(/:$/,"",ssd);while(!/^}/){command|getline;if(/un_phy_blocksize/){un_phy_blocksize[ssd]=strtonum($NF);}}}};close(command);}/ssd/{ssd=$1;gsub(/^ssd/,"",ssd);getline;split($0,vendor,",");printf "ssd: %s\tun_phy_blocksize: %d\t%s\t%s\n",ssd,un_phy_blocksize[ssd],vendor[1],vendor[4];}'

</syntaxhighlight>

Alignment and ZFS

First read ZFS zpools create misaligned I/O in Solaris 11 and Solaris 10 Update 8 and later (407376).

If you have 4k as block size in your storage use ashift=12 (alignment shift exponent).

Status of alignment

<source lang=bash>

  1. ssh filer01 "priv set -q diag ; lun show -v all; priv set"

LUN for ZFS 

       /vol/ZoneLUNs/Zone01.lun      50g (53687091200)   (r/w, online, mapped)
               Serial#: 800KP+EpO-33
               Share: none
               Space Reservation: enabled
               Multiprotocol Type: solaris_efi
               Maps: SUN_SERVER01_SERVER02=40
               Occupied Size:   46.2g (49583595520)  
               Creation Time: Wed Jan  7 11:37:58 CET 2015

---> Alignment: partial-writes 

               Cluster Shared Volume Information: 0x0 
               Space_alloc: disabled
               report-physical-size: enabled
               Read-Only: disabled

LUN for Oracle Database 

       /vol/TEMP201/TEMP201          25g (26843545600)   (r/w, online, mapped)
               Serial#: 800KP+EpO-2t
               Share: none
               Space Reservation: enabled
               Multiprotocol Type: solaris_efi
               Maps: SUN_SERVER01_SERVER02=35
               Occupied Size:   21.6g (23195856896)  
               Creation Time: Fri Jul  4 11:02:34 CEST 2014

---> Alignment: misaligned 

               Cluster Shared Volume Information: 0x0 
               Space_alloc: disabled
               report-physical-size: enabled
               Read-Only: disabled

... </syntaxhighlight> Or use "lun alignment show": <source lang=bash>

  1. ssh filer01 "priv set -q diag ; lun alignment show; priv set"

LUN for ZFS Wide spread reads. I think the ashift is not correct. 

       /vol/ZoneLUNs/Zone01.lun 
               Multiprotocol type: solaris_efi
               Alignment: partial-writes
               Write alignment histogram percentage: 5, 5, 4, 6, 4, 6, 14, 5
               Read alignment histogram percentage: 8, 7, 10, 7, 7, 8, 36, 5
               Partial writes percentage: 47
               Partial reads percentage: 9

LUN for Oracle Database 

       /vol/TEMP201/TEMP201     
               Multiprotocol type: solaris_efi
               Alignment: misaligned
               Write alignment histogram percentage: 0, 0, 0, 0, 0, 0, 99, 0
               Read alignment histogram percentage: 0, 0, 8, 0, 0, 0, 77, 0
               Partial writes percentage: 0
               Partial reads percentage: 14

</syntaxhighlight>

Or "stats show lun": <source lang=bash> filer01*> stats show -e lun:/vol/TEMP201:.*_align_histo.* </syntaxhighlight>

ashift=12? Why 12?

<source lang=bash>

  1. echo "2^12" | bc -l

4096 </syntaxhighlight> OK... 4k... I see.

What ashift do I have?

<source lang=bash>

  1. zdb | egrep ' name|ashift'
   name: 'apache_pool'
           ashift: 9
   name: 'mysql_pool'
           ashift: 9

... </syntaxhighlight>

Create ZPools on NetApp LUNs with this syntax

<source lang=bash>

  1. zpool create -o ashift=12 <mypool> mirror <vdev1> <vdev2>

</syntaxhighlight>

Solaris Cluster

<source lang=bash>

  1. /opt/NTAP/SANToolkit/bin/sanlun lun show | nawk '$3 ~ /^\/dev\//{line=$0;gsub(/s[0-9]+$/,"",$3);command="/usr/cluster/bin/cldev list "$3; command | getline; close(command); print line,$1; next;}NR==2{print $0,"DID";next;}NR==3{print $0"-------";next}{print;}'

controller(7mode)/ device host lun vserver(Cmode) lun-pathname filename adapter protocol size mode DID

ncl01-iscsi-svm1 /vol/vol_cyrus01/lun_tz_cyrus01_1 /dev/rdsk/c0t600A0980383033777B244834556D4865d0s2 iscsi0 iSCSI 500.1g C d5 ncl01-iscsi-svm1 /vol/vol_cyrus01/lun_tz_cyrus01_2 /dev/rdsk/c0t600A0980383033777B244834556D4866d0s2 iscsi0 iSCSI 500.1g C d6 ncl01-iscsi-svm1 /vol/vol_cyrus01/lun_tz_cyrus01_3 /dev/rdsk/c0t600A0980383033777B244834556D4867d0s2 iscsi0 iSCSI 500.1g C d7 ... </syntaxhighlight>

Links

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