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Kernel 2.4 based: June 2003 stream
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linux-2.4.21-s390-08-june2003.tar.gz
/ MD5 ... accumulated patch, recommended (2003-12-18)
linux-2.4.21-s390-08-june2003-patches.tar.gz
/ MD5 ... per-problem-patches, recommended (2003-12-18)
These patches contain the following linux kernel bug fixes:
| Description: |
DASD driver sets improper default cache mode on ESS |
| Symptom: |
Performance limitation. |
| Problem: |
Suboptimal caching behavior for 'default' workload limits I/O
performance. |
| Solution: |
Set proper default (normal caching) and provide IOCTL
"BIODASDGATTR" to get current setting. |
| Problem-ID: |
5409 |
| Description: |
Massive workload combined with ESS flascopy leading to I/O
hang. |
| Symptom: |
FlashCopy I/O hang |
| Problem: |
State change interrupt handler checks only first request in
cqr-queue, but in case the fastpath for start_IO was successful, it
might happen that the second request is long busy. |
| Solution: |
Check the whole cqr-queue for long busy. |
| Problem-ID: |
4676 |
| Description: |
Unnecessary restriction to length of inputdata for MEX
request |
| Symptom: |
errno = EINVAL for valid data |
| Problem: |
checking for even inputdatalength for both CRT and MEX
request |
| Solution: |
only check for CRT request |
| Problem-ID: |
5633 |
Everybody should apply this patch.
To create the complete linux kernel sources, the following
patches need to be applied in sequence:
linux-2.4.21.tar.gz (see www.kernel.org)
+ linux-2.4.21-s390-june2003.diff (IBM)
+ linux-2.4.21-s390-01-june2003.diff (IBM)
+ linux-2.4.21-s390-02-june2003.diff (IBM)
+ linux-2.4.21-s390-03-june2003.diff (IBM)
+ linux-2.4.21-s390-04-june2003.diff (IBM)
+ linux-2.4.21-s390-05-june2003.diff (IBM)
+ linux-2.4.21-s390-06-june2003.diff (IBM)
+ linux-2.4.21-s390-07-june2003.diff (IBM)
+ linux-2.4.21-s390-08-june2003.diff (IBM)
Note: If On-demand timer is required, apply as last patch:
+ linux-2.4.21-s390-timer-01-june2003.diff (IBM)
Note: To use OSA-Express Direct SNMP, also install s390-tools
1.2.2 or later.
Note: Using broadcast in VM Guest LAN requires APAR VM63397.
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