Oracle VM 3.4: Sense Key : Illegal Request [current] (Doc ID 2794215.1)

Last updated on JULY 10, 2023

Applies to:

Symptoms

The following related errors were found on the messages:

360030d90d98bb00360a8b74ee0418d1a: sdn
messages:Jul 19 10:34:29 <hostname> kernel: [4216247.042358] blk_update_request: I/O error, dev sdn, sector 0
messages:Jul 19 10:34:29 <hostname> kernel: [4216247.048742] sd 1:0:0:103: [sdn] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
messages:Jul 19 10:34:29 <hostname> kernel: [4216247.048745] sd 1:0:0:103: [sdn] tag#0 Sense Key : Illegal Request [current] ------------------------> See description below
messages:Jul 19 10:34:29 <hostname> kernel: [4216247.048748] sd 1:0:0:103: [sdn] tag#0 Add. Sense: Logical unit not supported
messages:Jul 19 10:34:29 <hostname> kernel: [4216247.048750] sd 1:0:0:103: [sdn] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
messages:Jul 19 10:34:29 <hostname> kernel: [4216247.048752] blk_update_request: I/O error, dev sdn, sector 0

360030d90c6aeb203e1c97b8f531e70b1: sdbb
messages:Jul 19 10:14:36 <hostname> kernel: [4215053.941672] sd 2:0:0:107: [sdbb] tag#0 Sense Key : Illegal Request [current] ----------------------->
messages:Jul 19 10:14:36 <hostname> kernel: [4215053.941674] sd 2:0:0:107: [sdbb] tag#0 Add. Sense: Logical unit not supported
messages:Jul 19 10:14:36 <hostname> kernel: [4215053.941677] sd 2:0:0:107: [sdbb] tag#0 CDB: Read(10) 28 00 00 00 00 00 00 00 08 00
messages:Jul 19 10:14:36 <hostname> kernel: [4215053.941678] blk_update_request: I/O error, dev sdbb, sector 0
messages:Jul 19 10:47:59 <hostname> kernel: [4217056.510346] Buffer I/O error on dev sdbb, logical block 0, async page read
messages:Jul 19 10:47:59 <hostname> kernel: [4217056.516313] Buffer I/O error on dev sdbb, logical block 256, async page read
messages:Jul 19 10:47:59 <hostname> kernel: [4217056.522325] Buffer I/O error on dev sdbb, logical block 0, async page read
messages:Jul 19 10:47:59 <hostname> kernel: [4217056.528337] Buffer I/O error on dev sdbb, logical block 0, async page read

From: https://www.t10.org/drafts.htm#SPC_Family
SCSI Primary Commands (SPC-6) (Download the pdf)

LLEGAL REQUEST: Indicates that:
a) the command was addressed to an incorrect logical unit number (see SAM-5); ----> Here, because the LUNs no longer exist
b) the command had an invalid task attribute (see SAM-5);
c) the command was addressed to a logical unit whose current configuration prohibits processing the command;
d) there was an illegal parameter in the Command Descriptor Block; or
e) there was an illegal parameter in the additional parameters supplied as data for some commands (e.g., PERSISTENT RESERVE OUT).
If the device server detects an invalid parameter in the CDB, the device server shall terminate the command without altering the medium. If the device server detects an invalid parameter in the additional parameters supplied as data, then the device server may have already altered the medium.

As a side effect udevd was also consuming 100% CPU

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1741 root 16 -4 532m 523m 1196 R 99.5 6.4 4058:06 udevd --------------------------> udev daemon is on 100% CPU all the time.

Some Storage related blkdid processes that invokes udev are on D state
23969 32570 21 1.0 0.0 8376 1484 lock_p D 10:00:20 00:00:00 /sbin/blkid -o udev -p /dev/sdbb
23968 32588 21 0.0 0.0 8376 1484 lock_p D 10:00:20 00:00:00 /sbin/blkid -o udev -p /dev/sdn

Changes

Affected LUNs were deleted from the storage end 

Cause

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