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Bug 1444232 - RHEL 7.3 anaconda installer has max swap size of 128GB
Summary: RHEL 7.3 anaconda installer has max swap size of 128GB
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: python-blivet
Version: 7.4
Hardware: Unspecified
OS: Linux
urgent
urgent
Target Milestone: rc
: ---
Assignee: Vojtech Trefny
QA Contact: Release Test Team
URL:
Whiteboard:
: 1445094 1654695 (view as bug list)
Depends On:
Blocks: 1656485 1784876
TreeView+ depends on / blocked
 
Reported: 2017-04-20 23:31 UTC by Devon
Modified: 2024-03-25 14:59 UTC (History)
10 users (show)

Fixed In Version:
Doc Type: Enhancement
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-06-23 10:42:18 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
Kickstart logs from the install (225.58 KB, application/x-bzip)
2019-01-31 06:15 UTC, Parikshit Khedekar 		no flags Details
View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Knowledge Base (Solution) 5448511 0 None None None 2020-09-30 16:36:28 UTC

Description Devon 2017-04-20 23:31:27 UTC 
Description of problem:

Anaconda installer is unable to create swap larger than 128GB. 

Version-Release number of selected component (if applicable):

RHEL 7.3

How reproducible:

Every Time

Steps to Reproduce:
1. Install using anaconda installer
2. Attempt to set swap larger than 128GB
3. Swap defaults back to 128GB

Actual results:

Swap size set at 128GB

Expected results:

Swap size set above 128GB to what it is actually set

Additional info:

After installation completes, was able to set swap size manually to desired size. Problem seems to be specifically with anaconda.
Comment 2 Martin Kolman 2017-04-21 10:44:54 UTC 
Maximums swap size is defined by a constant in the Blivet storage library, so reassigning.
Comment 3 jcastran 2017-04-24 22:37:05 UTC 
*** Bug 1445094 has been marked as a duplicate of this bug. ***
Comment 4 David Lehman 2017-08-18 20:18:58 UTC 
Reference materials showing actual limits of swap size would be useful here.
Comment 5 Parikshit Khedekar 2019-01-31 06:15:11 UTC 
Created attachment 1525243 [details]
Kickstart logs from the install
Comment 7 Jon Magrini 2020-01-15 16:39:49 UTC 
*** Bug 1654695 has been marked as a duplicate of this bug. ***
Comment 12 Vojtech Trefny 2020-06-03 11:56:54 UTC 
upstream PR for rhel7-branch: https://github.com/storaged-project/blivet/pull/851

updates image: https://vtrefny.fedorapeople.org/img/rhbz1444232.img
Comment 14 Jan Stodola 2020-06-11 12:24:22 UTC 
Some notes from testing of the updates.img from comment 12:

1) I was able to create swap with more than 128 GB (tested with 512 GiB)
2) It's not possible to create swap bigger than 16 TiB (This is the limit from the pull request). An attempt to create an 18 TiB will reduce the size to 16 TiB (Tested on a system with 20 TiB disk space).
3) When trying to continue the installation with 16 TiB swap, the installation failed with a traceback. The VM used for testing had 3 GB of memory:

anaconda 21.48.22.158-1 exception report
Traceback (most recent call first):
  File "/tmp/updates/blivet/devicelibs/swap.py", line 90, in swapon
    raise SwapError("swapon failed for '%s'" % device)
  File "/tmp/updates/blivet/formats/swap.py", line 163, in setup
    swap.swapon(self.device, priority=self.priority)
  File "/tmp/updates/blivet/__init__.py", line 2665, in turnOnSwap
    device.format.setup()
  File "/tmp/updates/blivet/__init__.py", line 1646, in turnOnSwap
    self.fsset.turnOnSwap(rootPath=_sysroot)
  File "/tmp/updates/blivet/__init__.py", line 242, in turnOnFilesystems
    storage.turnOnSwap()
  File "/usr/lib64/python2.7/site-packages/pyanaconda/install.py", line 206, in doInstall
    turnOnFilesystems(storage, mountOnly=flags.flags.dirInstall, callbacks=callbacks_reg)
  File "/usr/lib64/python2.7/threading.py", line 765, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib64/python2.7/site-packages/pyanaconda/threads.py", line 227, in run
    threading.Thread.run(self, *args, **kwargs)
SwapError: swapon failed for '/dev/vda4'

from program.log:
14:10:38,385 INFO program: Running... swapon /dev/vda4
14:10:38,403 INFO program: swapon: /dev/vda4: swapon failed: Cannot allocate memory
14:10:38,403 DEBUG program: Return code: 255

The whole anaconda-tb will be attached.
Comment 18 Vojtech Trefny 2020-06-23 10:42:18 UTC 
Closing this as wontfix, we've decided this is too risky to change in RHEL 7.9. Updates image provided in comment #12 can be used as a workaround.
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