Quoting Mark Post <[email protected]>:
On 8/19/21 6:17 PM, Aria Bamdad wrote:
The upgrade to SP3 appears to
cause a change in the udev definitions for the DASD defined on the server
(in /etc/udev/rules.d) . For SLES 12 systems, these rules are
51-dasd-0.0.0xxx.rules files but it seems that for SLES15, they change
format and number to 41-dasd-eckd-0.0.0xxx.rules.
This change actually happened with SLES12 SP4, when the chzdev and
lszdev tools were introduced to s390-tools by IBM.
That's odd because none of my SLES 12 SP4 or SP5 systems have 41
rules. In fact
none of my upgraded servers from 12 to 15 have them even for 15 SP1 or
SP2. This
happens at SP3 for me.
However, this change does
not happen for an upgraded SLES12 system to SLES15 until you upgrade to
SLES15SP3. Once you upgrade to SP3, then the old 51-dasd rules are renamed
with the '.legacy' extensions, new 41- rules are created. The rules for the
vdisk for swap are left alone and thus after the upgrade, the swap
partitions are no longer activated. There is more to this but I will not go
into detail.
Question, for each of the udev rules renamed to .legacy, is there an
equivalent 41-* rule present?
Only the eckd device rules were renamed from 51 to 51 with .legacy
extension. Then
new 41 rules defined for them. The FBA devices, namely the two vdisk
swap disks were
left alone with 51 rules and not 41 rules were defined. There are
messages in the y2log
file from mkinitrd stating it is skipping 51 rule devices. I have
reported these to SUSE but
they tech said she has no access to Z system so is testing on another
architecture. I don't
think that will help!
Aria
Mark Post
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