Try doing something like I did in my blog to generate the udev rules.
https://dbakerber.wordpress.com/2019/10/16/udev-rules-for-oracle-storage/
On Thu, Jan 2, 2020 at 3:36 PM David Barbour <david.barbour1@xxxxxxxxx>
wrote:
[root@685925-db6 by-path]# /sbin/udevadm info --query=property --name
/dev/emcpoweree
UDEV_LOG=3
DEVPATH=/devices/virtual/block/emcpoweree
MAJOR=120
MINOR=2144
DEVNAME=/dev/emcpoweree
DEVTYPE=disk
SUBSYSTEM=block
ID_PART_TABLE_TYPE=dos
LVM_SBIN_PATH=/sbin
DEVLINKS=/dev/block/120:2144
On Thu, Jan 2, 2020 at 3:27 PM Andrew Kerber <andrew.kerber@xxxxxxxxx>
wrote:
See what you get with this:
udevadm info –query=property –name /dev/emcpoweree
On Thu, Jan 2, 2020 at 2:41 PM David Barbour <david.barbour1@xxxxxxxxx>
wrote:
The udev piece seems to be what's missing. I usually use multipath with
the device name in multipath.conf. On this setup however, multipath is not
an active service and multipath.conf does not exist. The wwid and or scsi
device do not show up in /dev/disk/by-id:
*[root@685925-db6 by-id]# ls -al |grep
60060160E6914D00ADF8F35D73CD831D[root@685925-db6 by-id]#*
The LUNs SHOULD show up in /dev/ora in accordance with the stanza in
*/etc/udev/rules.d/99-oracle-grid.rules* - but alas, they do not.
The asm_diskstring is set to:
*SQL> show parameter asm_diskstringNAME
TYPE VALUE------------------------------------ -----------
------------------------------asm_diskstring string
/dev/ora/**
On Thu, Jan 2, 2020 at 2:15 PM Harel Safra <harel.safra@xxxxxxxxx>
wrote:
Are the new devices created by udev?
Did you set ASM_DISKTRING (
https://docs.oracle.com/en/database/oracle/oracle-database/12.2/refrn/ASM_DISKSTRING.html)
to search that location?
Harel
On Thu, Jan 2, 2020 at 9:35 PM David Barbour <david.barbour1@xxxxxxxxx>
wrote:
Happy New Year!
We are changing SANs from an EMC VNX to an EMC UNITY. The servers and
SANs are hosted at a third-party site. We are on RHEL 6.8. We are not
using ASMLib.
When I was informed that the LUNs had been presented to the servers
(it's a 2-node RAC) I re-scanned the hosts and the Powerpath devices
showed
up. Using parted I partitioned each LUN as a full primary partition. I
added the WWID to udev rules, but no matter what I try, the LUNs are not
showing up in the ASM search path. Generally I don't use Powerpath, so
I'm
hoping I don't have to reboot the server to get these to show up.
*Here's what I see (using one LUN as an example):*
*[root@685925-db6 dev]# ls -al |grep emcpowereebrw-rw---- 1 root
disk 120, 2144 Jan 2 12:32 emcpowereebrw-rw---- 1 root disk
120,
2145 Jan 2 12:08 emcpoweree1*
*[root@685925-db6 dev]# parted /dev/emcpoweree*
*Disk /dev/emcpoweree: 859GBSector size (logical/physical):
512B/512BPartition Table: msdosNumber Start End Size Type File
system Flags 1 4194kB 859GB 859GB primary*
*[root@685925-db6 dev]# powermt display dev=emcpowereePseudo
name=emcpowereeUnity ID=APM00193839645 [Host_5]Logical device
ID=60060160E6914D00ADF8F35D73CD831D
[863648-685926-800GB-Pool1-RAC_Cluster-56]state=alive; policy=CLAROpt;
queued-IOs=0Owner: default=SP A, current=SP A Array failover mode:
4==============================================================================---------------
Host --------------- - Stor - -- I/O Path -- -- Stats ---### HW Path
I/O Paths Interf. Mode State Q-IOs
Errors==============================================================================
1 bfa sdtq SP B3 active alive 0
0 1 bfa sdrj SP A2 active alive 0
0 2 bfa sdpc SP A3 active alive 0
0 2 bfa sdmv SP B2 active alive
0 0*
*[root@685925-db6 by-id]# ls -al |grep
60060160E6914D00ADF8F35D73CD831D[root@685925-db6 by-id]#*
*Here's the stanza in /udev/rules.d/99-oracle-grid.rules:*
*#emcpoweree#[863648-685926-800GB-Pool1-RAC_Cluster-56]
ACTION=="add|change",
KERNEL=="emcpower[a-z][a-z]?", SUBSYSTEM=="block", PROGRAM="/sbin/scsi_id
--whitelisted --replace-whitespace /dev/$parent",
RESULT=="360060160E6914D00ADF8F35D73CD831D", OWNER="grid",
GROUP="asmadmin", MODE="0660", NAME="/dev/ora/ORA-ACTIVE101p%n"*
I've tried rescanning the host(s), /sbin/udevadm control
--reload-rules with /sbin/udevadm trigger --type=devices --action=change
and powermt save and powermt config.
Nothing.
Do I need to reboot or is there some way to get these to show up?
*David A. Barbour*
*dbarbour@xxxxxxxxxxxx <dbarbour@xxxxxxxxxxxx>*
*(214) 292-4096*
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