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Very Slow I/O Performance On Storage - Qlogic HBA Reporting Dropped Frame And I/O Error (Doc ID 1582197.1)

Last updated on APRIL 22, 2020

Applies to:

Linux OS - Version Oracle Linux 5.0 and later
Oracle VM - Version 3.0.3 and later
Oracle Cloud Infrastructure - Version N/A and later
Linux x86
Linux x86-64

Symptoms

While running read/write performance tests it may be observed that one of the Oracle VM Servers in the cluster lacks performance on disks:

# dd if=/dev/zero of=/OVS/Repositories/<REPO_ID>/tmp/test.file bs=1024 count=1024000
1024000+0 records in
1024000+0 records out
1048576000 bytes (1.0 GB) copied, 8.92135 seconds, 118 MB/s

# dd if=/dev/zero of=/OVS/Repositories/<REPO_ID>/tmp/test.file bs=1024 count=1024000
1024000+0 records in
1024000+0 records out
1048576000 bytes (1.0 GB) copied, 68.2316 seconds, 15.4 MB/s


Alerts on messages can be observed:

...
Aug 19 11:30:41 <HOST> multipathd: <UUID>: sdc - emc_clariion_checker: Read error for WWN <WWN_ID>. Sense data are 0x0/0x0/0x0.
Aug 19 11:30:41 <HOST> multipathd: checker failed path 8:32 in map <UUID>
Aug 19 11:30:41 <HOST> multipathd: <UUID>: remaining active paths: 3
Aug 19 11:30:41 <HOST> kernel: device-mapper: multipath: Failing path 8:32.
Aug 19 11:30:46 <HOST> multipathd: <UUID>: sdc - emc_clariion_checker: Active path is healthy.
Aug 19 11:30:46 <HOST> multipathd: 8:32: reinstated
Aug 19 11:30:46 <HOST> multipathd: <UUID>: remaining active paths: 4
Aug 19 11:30:46 <HOST> kernel: sd 8:0:0:0: emc: ALUA failover mode detected
Aug 19 11:30:46 <HOST> kernel: sd 8:0:0:0: emc: at SP A Port 1 (owned, default SP A)
Aug 19 11:32:55 <HOST> kernel: sd 7:0:0:4: emc: ALUA failover mode detected
Aug 19 11:32:55 <HOST> kernel: sd 7:0:0:4: emc: at SP A Port 0 (owned, default SP A)
Aug 19 11:32:55 <HOST> kernel: sd 8:0:0:4: emc: ALUA failover mode detected
Aug 19 11:32:55 <HOST> kernel: sd 8:0:0:4: emc: at SP A Port 1 (owned, default SP A)
Aug 19 11:32:55 <HOST> kernel: sd 7:0:1:5: emc: ALUA failover mode detected
Aug 19 11:32:55 <HOST> kernel: sd 7:0:1:5: emc: at SP B Port 1 (owned, default SP B)
Aug 19 11:32:55 <HOST> kernel: sd 8:0:1:5: emc: ALUA failover mode detected
Aug 19 11:32:55 <HOST> kernel: sd 8:0:1:5: emc: at SP B Port 0 (owned, default SP B)
Aug 19 11:36:21 <HOST> multipathd: sdc: emc prio: query command indicates error
Aug 19 11:36:21 <HOST> kernel: qla2xxx [0000:d1:00.1]-801c:8: Abort command issued nexus=8:0:0 -- 1 2002.
Aug 19 11:36:21 <HOST> multipathd: <UUID>: load table [0 314572800 multipath 1 queue_if_no_path 1 emc 2 1 round-robin 0 1 1 8:16 1000 round-robin 0 3 1 8:32 1000 8:240 1000 65:0 1000]
Aug 19 11:36:41 <HOST> multipathd: <UUID>: load table [0 314572800 multipath 1 queue_if_no_path 1 emc 2 1 round-robin 0 2 1 8:16 1000 8:32 1000 round-robin 0 2 1 8:240 1000 65:0 1000]
Aug 19 11:39:22 <HOST> multipathd: 36006016054a0300078de62f2c4a5e211: sdg - emc_clariion_checker: query command indicates error
Aug 19 11:39:22 <HOST> multipathd: checker failed path 8:96 in map 36006016054a0300078de62f2c4a5e211
Aug 19 11:39:22 <HOST> multipathd: 36006016054a0300078de62f2c4a5e211: remaining active paths: 3
Aug 19 11:39:22 <HOST> kernel: qla2xxx [0000:d1:00.1]-801c:8: Abort command issued nexus=8:0:2 -- 1 2002.
Aug 19 11:39:22 <HOST> kernel: device-mapper: multipath: Failing path 8:96.
Aug 19 11:39:27 <HOST> multipathd: 36006016054a0300078de62f2c4a5e211: sdg - emc_clariion_checker: Active path is healthy.
Aug 19 11:39:27 <HOST> multipathd: 8:96: reinstated
Aug 19 11:39:27 <HOST> multipathd: 36006016054a0300078de62f2c4a5e211: remaining active paths: 4
Aug 19 11:39:27 <HOST> kernel: sd 8:0:0:2: emc: ALUA failover mode detected
Aug 19 11:39:27 <HOST> kernel: sd 8:0:0:2: emc: at SP A Port 1 (owned, default SP A)
Aug 19 11:39:52 <HOST> kernel: sd 7:0:0:0: emc: ALUA failover mode detected
Aug 19 11:39:52 <HOST> kernel: sd 7:0:0:0: emc: at SP A Port 0 (owned, default SP A)
Aug 19 11:39:52 <HOST> kernel: sd 8:0:0:0: emc: ALUA failover mode detected
Aug 19 11:39:52 <HOST> kernel: sd 8:0:0:0: emc: at SP A Port 1 (owned, default SP A)
...

 

Cause

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In this Document
Symptoms
Cause
Solution


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