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13513 discussions

Netapp-_NFS_datastore_VMware__SQL VM__NTFS
by Iluhes 08 Mar '18

08 Mar '18

What is the best practice for formating a NTFS partion to be used for MS SQL data drive on the VMWARE VMthat is residing on NFS (not VMFS or RDM) datastore.Is it still 4K? MS recommendations are for larger size (64K)NFS datastore!

3 5

global snapmirror throttle wastes another 2 days
by Peter D. Gray 08 Mar '18

08 Mar '18

Some time back I wasted 5 days trying to find out why my snapmirrors were not keeping up. Netapp eventually very kindly told me about the global snapmirror throttle which I immediately disabled on all nodes and snapmirror speeds went up by a factor of 10. Life was sweet. Till this week. Again my snapmirrors could not keep up. But I knew it could not be the global snapmirror throttle because I had disabled that before. It had to be network right? We had made some network changes. After 2 days I decided the symptoms were suffiently similar for me to revisit the global snapmirror throttle, and yes, sure enough the settings had reverted to enabled. I suspect this is because we power cycled our netapp heads as part of a DR exercise. It looks like when the head comes up the setting to disable the global snapmirror throttle is lost. Great stuff. So, its up to a total of 7 days lost because of the global snapmirror throttle which as I said before seems to exist solely for the purpose of making sure things do not work properly. Sorry, I had to vent. Regards, pdg

4 5

What's using up my disks?
by Rhodes, Richard L. 08 Mar '18

08 Mar '18

Hello, We have a series of old IBM N3220 (NetApp 2240-2) running Data ONTAP Release 8.1.2P1 7-Mode. We are actively migrating off these systems and plan to be off of them by early next month. One of the systems is for DR. It's a snapmirror target as well as a snapvault source. We snapmirror vols from a prod system to this DR system, and then snapvault the vols to another system for a 2nd copy at the DR site. So all this DR system does (normally) is receive snapmirrors and is the source for snapvaults. PROD pair --sm--> DR pair --sv--> snapvault target system Over the past days the snapvaults have been running REAL slow. A snapvault that used to run in a few minutes is now running up to an hour or more. When NO snapmirror (target) or snapvault (source) is running, there is constant disk READ activity that is hitting the disks at 100% util. The sysstats below are taken when no snapmirror or snapvault activity is happening. The system is idle as far as any work goes. sdnapr0666a> sysstat -u -i 2 CPU Total Net kB/s Disk kB/s Tape kB/s Cache Cache CP CP Disk ops/s in out read write read write age hit time ty util 14% 0 1 1 9886 726 0 0 1 96% 61% T 100% 14% 0 2 2 9792 12 0 0 1 96% 100% : 100% 43% 0 2 33 12144 106 0 0 1 97% 100% : 100% 34% 0 5 75 10560 142 0 0 1 96% 100% : 100% 15% 0 0 0 10434 24 0 0 1 96% 57% : 100% 14% 0 23 558 10200 4 0 0 1 96% 0% - 100% 16% 0 1 0 10618 12 0 0 1 96% 0% - 100% 14% 0 0 0 10548 16 0 0 1 96% 0% - 100% sdnapr0666a> sysstat -s -i 2 CPU NFS CIFS iSCSI Net kB/s Disk kB/s iSCSI kB/s Cache in out read write in out age 15% 0 0 0 0 0 11372 4 0 0 1 15% 0 0 0 23 558 9912 62 0 0 1 14% 0 0 0 1 0 10692 18 0 0 1 15% 0 0 0 0 0 11240 0 0 0 1 15% 0 0 0 0 0 10624 12 0 0 1 16% 0 0 0 23 558 10384 16 0 0 1 15% 0 0 0 0 0 10902 548 0 0 1 14% 0 0 0 0 0 10484 16 0 0 1 The disks (a shelf of SATA disks) are getting pounded. There are no hardware problem like a failed disk. The system looks healthy. For curiosity I performed a takeover/giveback, but this activity followed to the partner head and back. Below is a statit for 60 seconds. Again, with no activity happening. Any thoughts on what's happening is welcome! Rick ==> statit for 60 seconds issuing statit -b cmd Warning: These advanced commands are potentially dangerous; use them only when directed to do so by IBM personnel. sleeping for 60 issuing statit -e cmd Hostname: sdnapr0666a ID: 1892873400 Memory: 4342 MB Data ONTAP Release 8.1.2P1 7-Mode: Mon Jan 7 15:55:05 PST 2013 <1O> Start time: Thu Mar 8 07:46:41 EST 2018 CPU Statistics 60.364027 time (seconds) 100 % 17.647400 system time 29 % 0.705493 rupt time 1 % (617560 rupts x 1 usec/rupt) 16.941907 non-rupt system time 28 % 223.808704 idle time 371 % 28.281968 time in CP 47 % 100 % 0.330279 rupt time in CP 1 % (289024 rupts x 1 usec/rupt) Multiprocessor Statistics (per second) cpu0 cpu1 cpu2 cpu3 total sk switches 25405.59 23819.82 20634.33 23665.75 93525.49 hard switches 3671.11 11061.21 11051.23 2377.44 28160.99 domain switches 320.97 117.44 103.52 61.97 603.90 CP rupts 1968.90 936.90 945.31 936.90 4788.02 nonCP rupts 2242.33 1062.79 1074.68 1062.79 5442.58 IPI rupts 0.00 0.00 0.00 0.00 0.00 grab kahuna 0.00 0.00 0.00 0.00 0.00 grab kahuna usec 0.00 0.00 0.00 0.00 0.00 CP rupt usec 3466.57 378.19 399.89 1226.79 5471.45 nonCP rupt usec 3943.76 427.32 456.17 1388.59 6215.84 idle 954903.67 928083.Warning: These advanced commands are potentially dangerous; use them only when directed to do so by IBM personnel. 11 895281.16 929382.40 3707650.35 kahuna 0.00 0.00 0.00 25821.64 25821.64 storage 58.00 40654.71 43.47 0.00 40756.19 exempt 7709.69 3161.45 8699.97 6.79 19577.94 raid 79.98 54.75 45300.54 0.00 45435.29 target 9.26 7.16 8.85 0.00 25.28 dnscache 0.00 0.00 0.00 0.00 0.00 cifs 32.64 41.61 37.31 0.00 111.57 wafl_exempt 23660.32 22689.72 44831.88 42173.68 133355.62 wafl_xcleaner 29.42 17.94 37.75 0.00 85.13 sm_exempt 838.96 673.91 1093.71 0.00 2606.60 cluster 0.00 0.00 0.00 0.00 0.00 protocol 30.80 37.95 27.80 0.00 96.56 nwk_exclusive 218.04 150.37 92.84 0.00 461.27 nwk_exempt 624.54 629.35 587.63 0.08 1841.63 nwk_legacy 1534.08 21.32 14.23 0.00 1569.64 hostOS 2860.18 2970.99 3086.67 0.00 8917.88 12.265273 seconds with one or more CPUs active ( 20%) 3.098531 seconds with 2 or more CPUs active ( 5%) 1.011320 seconds with 3 or more CPUs active ( 2%) 9.166741 seconds with one CPU active ( 15%) 2.087210 seconds with 2 CPUs active ( 3%) 0.929439 seconds with 3 CPUs active ( 2%) 0.081881 seconds with all CPUs active ( 0%) Domain Utilization of Shared Domains (per second) 0.00 idle 125450.41 kahuna 0.00 storage 0.00 exempt 0.00 raid 0.00 target 0.00 dnscache 0.00 cifs 0.00 wafl_exempt 0.00 wafl_xcleaner 0.00 sm_exempt 0.00 cluster 0.00 protocol 2482.49 nwk_exclusive 0.00 nwk_exempt 0.00 nwk_legacy 0.00 hostOS Miscellaneous Statistics (per second) 28160.99 hard context switches 0.00 NFS operations 0.00 CIFS operations 0.00 HTTP operations 4.08 network KB received 90.32 network KB transmitted 10664.89 disk KB read 149.10 disk KB written 2.93 NVRAM KB written 0.00 nolog KB written 0.00 WAFL bufs given to clients 0.00 checksum cache hits ( 0%) 0.00 no checksum - partial buffer 0.00 FCP operations 0.00 iSCSI operations WAFL Statistics (per second) 11.48 name cache hits ( 98%) 0.22 name cache misses ( 2%) 36472.78 buf hash hits ( 83%) 7309.54 buf hash misses ( 17%) 1319.00 inode cache hits ( 87%) 193.03 inode cache misses ( 13%) 11030.66 buf cache hits ( 96%) 507.36 buf cache misses ( 4%) 195.58 blocks read 2452.11 blocks read-ahead 418.10 chains read-ahead 4.85 dummy reads 0.00 blocks speculative read-ahead 17.59 blocks written 0.33 stripes written 0.00 blocks page flipped 0.00 blocks over-written 0.07 wafl_timer generated CP 0.00 snapshot generated CP 0.00 wafl_avail_bufs generated CP 0.00 dirty_blk_cnt generated CP 0.00 full NV-log generated CP 0.00 back-to-back CP 0.00 flush generated CP 0.00 sync generated CP 0.00 deferred back-to-back CP 0.00 container-indirect-pin CP 0.00 low mbufs generated CP 0.00 low datavecs generated CP 3327.41 non-restart messages 53.28 IOWAIT suspends 0.00 next nvlog nearly full msecs 0.00 dirty buffer susp msecs 0.00 nvlog full susp msecs 762408 buffers RAID Statistics (per second) 9.34 xors 0.00 long dispatches [0] 0.00 long consumed [0] 0.00 long consumed hipri [0] 0.00 long low priority [0] 0.00 long high priority [0] 0.00 long monitor tics [0] 0.00 long monitor clears [0] 0.00 long dispatches [1] 0.00 long consumed [1] 0.00 long consumed hipri [1] 0.00 long low priority [1] 0.00 long high priority [1] 0.00 long monitor tics [1] 0.00 long monitor clears [1] 15 max batch 0.78 blocked mode xor 1.61 timed mode xor 0.40 fast adjustments 0.27 slow adjustments 0 avg batch start 0 avg stripe/msec 2628.35 checksum dispatches 13837.23 checksum consumed 0.56 tetrises written 0.00 master tetrises 0.00 slave tetrises 8.27 stripes written 1.08 partial stripes 7.19 full stripes 17.83 blocks written 3.99 blocks read 6.00 1 blocks per stripe size 1 0.35 1 blocks per stripe size 7 0.13 2 blocks per stripe size 7 0.08 3 blocks per stripe size 7 0.18 4 blocks per stripe size 7 0.10 5 blocks per stripe size 7 0.23 6 blocks per stripe size 7 1.19 7 blocks per stripe size 7 Network Interface Statistics (per second) iface side bytes packets multicasts errors collisions pkt drops e0a recv 4042.26 56.92 0.00 0.00 0.00 xmit 92475.23 17.92 0.25 0.00 0.00 e0b recv 135.28 1.94 0.00 0.00 0.00 xmit 6.96 0.17 0.17 0.00 0.00 e0c recv 0.00 0.00 0.00 0.00 0.00 xmit 0.00 0.00 0.00 0.00 0.00 e0d recv 0.00 0.00 0.00 0.00 0.00 xmit 0.00 0.00 0.00 0.00 0.00 e0M recv 1.06 0.02 0.02 0.00 0.00 xmit 10.14 0.08 0.08 0.00 0.00 e0P recv 0.00 0.00 0.00 0.00 0.00 xmit 0.00 0.00 0.00 0.00 0.00 vh recv 0.00 0.00 0.00 0.00 0.00 xmit 0.00 0.00 0.00 0.00 0.00 vif1 recv 4172.14 58.78 3.79 0.15 0.00 xmit 92481.29 18.07 0.41 0.00 0.00 Disk Statistics (per second) ut% is the percent of time the disk was busy. xfers is the number of data-transfer commands issued per second. xfers = ureads + writes + cpreads + greads + gwrites chain is the average number of 4K blocks per command. usecs is the average disk round-trip time per 4K block. disk ut% xfers ureads--chain-usecs writes--chain-usecs cpreads-chain-usecs greads--chain-usecs gwrites-chain-usecs /aggrcifs/plex0/rg0: 0a.02.0 0 0.48 0.00 .... . 0.18 6.91 816 0.30 3.11 1482 0.00 .... . 0.00 .... . 0a.02.10 1 0.58 0.00 .... . 0.31 4.84 1391 0.27 3.56 1263 0.00 .... . 0.00 .... . 0a.02.12 99 205.04 204.63 1.01 37088 0.18 4.91 26056 0.23 1.64 42043 0.00 .... . 0.00 .... . 0b.02.1 99 206.75 206.53 1.00 36560 0.08 10.40 6962 0.13 5.00 6850 0.00 .... . 0.00 .... . 0a.02.2 98 202.02 201.83 1.01 36183 0.08 10.00 10120 0.12 3.14 12455 0.00 .... . 0.00 .... . 0b.02.3 99 207.97 207.81 1.02 35700 0.08 8.40 11262 0.08 5.80 10207 0.00 .... . 0.00 .... . 0a.02.4 100 207.00 206.81 1.01 36822 0.08 10.20 8039 0.10 4.00 8542 0.00 .... . 0.00 .... . 0b.02.5 98 201.66 201.46 1.02 36275 0.08 11.40 2263 0.12 4.57 6188 0.00 .... . 0.00 .... . 0a.02.16 54 77.97 77.74 1.02 22560 0.08 10.60 3698 0.15 3.11 7964 0.00 .... . 0.00 .... . /aggrcifs/plex0/rg1: 0a.02.6 0 0.25 0.00 .... . 0.08 12.20 852 0.17 4.30 419 0.00 .... . 0.00 .... . 0b.02.7 0 0.25 0.00 .... . 0.08 12.20 754 0.17 4.30 581 0.00 .... . 0.00 .... . 0a.02.8 99 209.70 209.53 1.01 36216 0.08 10.60 7113 0.08 5.60 7036 0.00 .... . 0.00 .... . 0b.02.9 99 208.67 208.45 1.01 36722 0.08 9.40 8383 0.13 3.13 20640 0.00 .... . 0.00 .... . 0b.02.11 99 205.98 205.77 1.01 36561 0.08 10.80 3907 0.13 3.88 7194 0.00 .... . 0.00 .... . 0b.02.13 100 208.45 208.22 1.01 36938 0.08 9.80 12204 0.15 3.11 7714 0.00 .... . 0.00 .... . 0a.02.14 99 208.02 207.89 1.01 36361 0.08 10.20 9588 0.05 6.33 5316 0.00 .... . 0.00 .... . 0b.02.15 99 208.82 208.64 1.00 36455 0.08 10.40 10077 0.10 3.67 9455 0.00 .... . 0.00 .... . 0b.02.17 53 73.52 73.32 1.02 23057 0.08 9.80 2510 0.12 3.57 4840 0.00 .... . 0.00 .... . /aggr0/plex0/rg0: 0a.00.0 1 1.82 0.33 1.00 2150 1.49 4.82 316 0.00 .... . 0.00 .... . 0.00 .... . 0a.00.2 1 1.96 0.33 1.00 1600 1.62 4.59 336 0.00 .... . 0.00 .... . 0.00 .... . 0a.00.4 0 0.76 0.27 1.00 7125 0.30 20.11 262 0.20 13.75 473 0.00 .... . 0.00 .... . Aggregate statistics: Minimum 0 0.25 0.00 0.08 0.00 0.00 0.00 Mean 62 125.59 125.21 0.25 0.13 0.00 0.00 Maximum 100 209.70 209.53 1.62 0.30 0.00 0.00 Spares and other disks: 0a.00.5 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0a.00.3 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0a.00.6 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.1 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0a.00.7 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.4 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.11 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.2 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0a.00.1 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.6 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.18 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.3 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.0 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.5 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.12 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.8 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.9 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.10 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.20 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.02.19 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.7 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.23 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.21 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0a.02.18 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.17 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.22 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.19 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.15 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.13 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.14 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0b.01.16 0 0.00 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . 0.00 .... . FCP Statistics (per second) 0.00 FCP Bytes recv 0.00 FCP Bytes sent 0.00 FCP ops iSCSI Statistics (per second) 0.00 iSCSI Bytes recv 0.00 iSCSI Bytes xmit 0.00 iSCSI ops Interrupt Statistics (per second) 2209.15 int_0 4.62 int_1 0.20 int_2 0.20 int_3 14.68 int_6 2.10 int_7 0.08 Gigabit Ethernet (IRQ 8) 0.00 RTC 0.00 IPI 999.83 Msec Clock 3230.86 total ------------------------------------------------------------------------------ The information contained in this message is intended only for the personal and confidential use of the recipient(s) named above. If the reader of this message is not the intended recipient or an agent responsible for delivering it to the intended recipient, you are hereby notified that you have received this document in error and that any review, dissemination, distribution, or copying of this message is strictly prohibited. If you have received this communication in error, please notify us immediately, and delete the original message.

2 1

NetApp at SCaLE in Pasadena
by Lori Barfield 07 Mar '18

07 Mar '18

The Southern California Linux Expo is a an annual four-day open source conference that starts this Thursday, 3/8. The expo hall will be open Friday 2 p.m. through Sunday 2 p.m., and NetApp is in Booth #416. Here's the website: http://www.socallinuxexpo.org I am an organizer. Is anyone else here planning on being there? ...lori

1 0

its been a month I have not seen any posting, hope my subscription is still valid.
by Uddhav Regmi 04 Mar '18

04 Mar '18

thx

4 3

RE: NFS issue after upgrading filers to 9.2P2
by Steiner, Jeffrey 24 Jan '18

24 Jan '18

It takes a lot for an ONTAP system to flat-out be unable to respond. Unless the timeout parameters are exceedingly short, you shouldn't reach that point, especially with anything capable of running ONTAP 9.2. I'd open a support case on this one. In addition, if you want to trigger an autosupport and send me the serial numbers directly I can take a glance at a few stats to see if anything looks odd. From: Fenn, Michael [mailto:fennm@DEShawResearch.com] Sent: Tuesday, January 23, 2018 6:23 PM To: Steiner, Jeffrey <Jeffrey.Steiner(a)netapp.com>; Mark Saunders <Mark.Saunders(a)pcmsgroup.com>; toasters(a)teaparty.net Subject: Re: NFS issue after upgrading filers to 9.2P2 The messages are not necessarily indicative of a network problem. The kernel prints "nfs: server … not responding, still trying" when an operation times out (timeo deciseconds) for the configured (retrans) number of tries. Once the server responds, then it prints "nfs: server … OK". Networking problems are certainly one reason that an operation would time out, but not the only reason. An overloaded or down file server will cause the same effect. Thanks, Michael From: <toasters-bounces(a)teaparty.net<mailto:toasters-bounces@teaparty.net>> on behalf of "Steiner, Jeffrey" <Jeffrey.Steiner(a)netapp.com<mailto:Jeffrey.Steiner@netapp.com>> Date: Tuesday, January 23, 2018 at 10:38 AM To: Mark Saunders <Mark.Saunders(a)pcmsgroup.com<mailto:Mark.Saunders@pcmsgroup.com>>, "toasters(a)teaparty.net<mailto:toasters@teaparty.net>" <toasters(a)teaparty.net<mailto:toasters@teaparty.net>> Subject: RE: NFS issue after upgrading filers to 9.2P2 Those messages are indicative of a network problem. The packets are going through, then they succeed when the NFS client retries, then they pause again. I can't think why an ONTAP upgrade of this type would cause such a problem. If it was working before, it should be working now. If you had any kind of a locking, firewall, or general configuration problem you should have no access whatsoever. I've seen some weird NFS bug sin SUSE, but that RHEL version should be fine. What are the mount options used, and are you using DNFS? From: toasters-bounces(a)teaparty.net<mailto:toasters-bounces@teaparty.net> [mailto:toasters-bounces@teaparty.net] On Behalf Of Mark Saunders Sent: Tuesday, January 23, 2018 4:29 PM To: toasters(a)teaparty.net<mailto:toasters@teaparty.net> Subject: NFS issue after upgrading filers to 9.2P2 Hi gents today we have upgraded our Coventry cluster from 9.1P6 to 9.2P2 and we are about 99% working we just have a strange issue with SAP database servers NFS mounts. When the server is bounced the mounts are attached with no problems but after a few minutes a df –h starts to be very slow reporting the NFS mounted directories and if the databases are started up they hang and a df –h then also hangs. This sometimes recovers enough to then allow a df –h to work again but the databases are a lost cause right now. In the server messages we get lots of entries for the SVM Jan 23 07:01:27 jwukccsbci kernel: nfs: server JWUKCSVM01 not responding, still trying Jan 23 07:01:47 jwukccsbci last message repeated 5 times Jan 23 07:02:07 jwukccsbci kernel: nfs: server JWUKCSVM01 OK Jan 23 07:02:07 jwukccsbci last message repeated 5 times Jan 23 07:02:27 jwukccsbci kernel: nfs: server JWUKCSVM01 not responding, still trying Jan 23 07:02:47 jwukccsbci last message repeated 5 times Jan 23 07:02:48 jwukccsbci kernel: nfs: server JWUKCSVM01 OK Is there anything that would of changed in the upgrade to lock down NFS or changes options that we might need to change back. The redhat servers are an old kernel version 2.6.18-371.el5 that has some bugs but this was working fine before the filer upgrade was carried out. Regards Mark Data Centre Sysadmin Team Managed Services Phone:- 02476 694455 Ext 2567 The Sysadmin Team promoting PCMS Values ~Integrity~Respect~Commitment~ ~Continuous Improvement~ The information contained in this e-mail is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. If you are not the intended recipient of this e-mail, the use of this information or any disclosure, copying or distribution is prohibited and may be unlawful. If you received this in error, please contact the sender and delete the material from any computer. The views expressed in this e-mail may not necessarily be the views of the PCMS Group plc and should not be taken as authority to carry out any instruction contained. The PCMS Group reserves the right to monitor and examine the content of all e-mails. The PCMS Group plc is a company registered in England and Wales with company number 1459419 whose registered office is at PCMS House, Torwood Close, Westwood Business Park, Coventry CV4 8HX, United Kingdom. VAT No: GB 705338743

7 20

NFS issue after upgrading filers to 9.2P2
by Mark Saunders 23 Jan '18

23 Jan '18

Hi gents today we have upgraded our Coventry cluster from 9.1P6 to 9.2P2 and we are about 99% working we just have a strange issue with SAP database servers NFS mounts. When the server is bounced the mounts are attached with no problems but after a few minutes a df -h starts to be very slow reporting the NFS mounted directories and if the databases are started up they hang and a df -h then also hangs. This sometimes recovers enough to then allow a df -h to work again but the databases are a lost cause right now. In the server messages we get lots of entries for the SVM Jan 23 07:01:27 jwukccsbci kernel: nfs: server JWUKCSVM01 not responding, still trying Jan 23 07:01:47 jwukccsbci last message repeated 5 times Jan 23 07:02:07 jwukccsbci kernel: nfs: server JWUKCSVM01 OK Jan 23 07:02:07 jwukccsbci last message repeated 5 times Jan 23 07:02:27 jwukccsbci kernel: nfs: server JWUKCSVM01 not responding, still trying Jan 23 07:02:47 jwukccsbci last message repeated 5 times Jan 23 07:02:48 jwukccsbci kernel: nfs: server JWUKCSVM01 OK Is there anything that would of changed in the upgrade to lock down NFS or changes options that we might need to change back. The redhat servers are an old kernel version 2.6.18-371.el5 that has some bugs but this was working fine before the filer upgrade was carried out. Regards Mark Data Centre Sysadmin Team Managed Services Phone:- 02476 694455 Ext 2567 The Sysadmin Team promoting PCMS Values ~Integrity~Respect~Commitment~ ~Continuous Improvement~ The information contained in this e-mail is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. If you are not the intended recipient of this e-mail, the use of this information or any disclosure, copying or distribution is prohibited and may be unlawful. If you received this in error, please contact the sender and delete the material from any computer. The views expressed in this e-mail may not necessarily be the views of the PCMS Group plc and should not be taken as authority to carry out any instruction contained. The PCMS Group reserves the right to monitor and examine the content of all e-mails. The PCMS Group plc is a company registered in England and Wales with company number 1459419 whose registered office is at PCMS House, Torwood Close, Westwood Business Park, Coventry CV4 8HX, United Kingdom. VAT No: GB 705338743

2 1

Implementing NSE FDE on an existing system
by jordan slingerland 10 Jan '18

10 Jan '18

I have an 8040 currently running CM 9.1P1. All disks are SED but currently in protection-mode open mode. Is there a method to convert the existing disks/aggregates to protection-mode full? Is enabling encryption on spare disks and preforming a disk replace 1 or 2 disks at a time a viable option? That sounds time consuming but I don't have 100TB of swing space.

1 0

Node(s) Out of Quorum During Takeover
by Philbert Rupkins 06 Jan '18

06 Jan '18

Hello, Just inherited a new 4-node ONTAP 9.1P9 cluster. First order of business - testing manual failover functionality. # CLUSTER INITIAL STATE HA PAIR 1: node1 - epsilon, master node2 - secondary HA PAIR 2: node3 - secondary node4 - secondary The node I intended to takeover (node1) was both the master and held the Epsilon. I moved Epsilon to a node in an HA pair that would remain up (node4). However, per the "cluster ring" output, the node I planned to takeover (node1) was still the master. # CLUSTER NODE1 PRE-TAKEOVER STATE HA PAIR 1: node1 - master node2 - secondary HA PAIR 2: node3 - secondary node4 - epsilon, secondary I initiated the takeover of node1 and received "Node(s) Out of Quorum" alerts from the three other members of the cluster. The cluster seemed to be happy after the takeover/giveback was complete. The "cluster ring" output showed the master role had been assumed by another node. # CLUSTER POST NODE1 TAKEOVER/GIVEBACK STATE HA PAIR 1: node1 - secondary node2 - master HA PAIR 2: node3 - secondary node4 - epsilon, secondary Is it normal to receive "Node(s) Out of Quorum" alerts when performing a manual takeover of the master node? Are these alerts the result of an election being forced? Thanks, Phil

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VMware SRM + NetApp SRA + NetApp WFA?
by Ehrenwald, Ian 04 Jan '18

04 Jan '18

This isn't 100% NetApp related, more like 60%, but I think it's still a relevant topic of discussion that others may eventually benefit from too. I've been tasked with setting up DR for a set of VMware VMs at our primary data center by replicating them via SnapMirror to our secondary data center. Normally I'd just use VMware SRM with the NetApp SRA, set up Array Based Replication within SRM, and be done with it. Let SRM and the SRA take care of test, failover, reprotect, etc. However, the sticking point is that a lot of the protected VMs use in-guest NFS mounts for things like database volumes or application binaries and SRM doesn't know what to do with those SnapMirror pair volumes because they're not VMware datastores. My initial thought was to use some PowerShell with the NetApp PowerShell Toolkit in the SRM Recovery Plan for each individual VM pre-boot to connect to the SnapMirror destination filer, break the SnapMirror(s) that the VM uses, mount the volume(s), set export policies, etc. Then figure out how to correctly do resync and reprotect without blowing things up. I got as far as the first part in PowerShell (connect to the destination filer, break the mirror) and thought to myself that this was stupid.. I'm re-inventing the wheel. Surely someone else out there must have done this before and there is a pre-existing solution? I spoke with a NetApp tech support engineer that I happened to have a case open with already regarding the NetApp SRA and he was able to come up with a suggestion from another engineer: Call WFA from SRM in each VMs recovery plan to break the SnapMirror for the volumes required for the VM to work, then also use WFA in the cleanup and reprotect plan to do that work. Has anyone else done something like this? I have a feeling that I'm not breaking new ground with this task. Implementing it wrong has pretty severe implications, though, so I'm not eager to mess it up. Ian Ehrenwald Senior Infrastructure Engineer Hachette Book Group, Inc. 1.617.263.1948 / ian.ehrenwald(a)hbgusa.com This may contain confidential material. If you are not an intended recipient, please notify the sender, delete immediately, and understand that no disclosure or reliance on the information herein is permitted. Hachette Book Group may monitor email to and from our network.

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