Bug 188080 - kernel dm snapshots: Incorrect processing of incorrect chunk size
kernel dm snapshots: Incorrect processing of incorrect chunk size
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel (Show other bugs)
4.0
All Linux
medium Severity medium
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Assigned To: Alasdair Kergon
Brian Brock
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Depends On:
Blocks: 181409
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Reported: 2006-04-05 17:08 EDT by Alasdair Kergon
Modified: 2007-11-30 17:07 EST (History)
3 users (show)

See Also:
Fixed In Version: RHSA-2006-0575
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2006-08-10 19:04:14 EDT
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RHEL 7.3 requirements from Atomic Host:


Attachments (Terms of Use)
dm-snapshot-unify-chunk_size.patch (5.58 KB, patch)
2006-04-05 17:08 EDT, Alasdair Kergon
no flags Details | Diff

  None (edit)
Description Alasdair Kergon 2006-04-05 17:08:10 EDT
Persistent snapshots currently store a private copy of the chunk size.
Userspace also supplies the chunk size when loading a snapshot.
Ensure consistency by only storing the chunk_size in one place and
fix stuff up if the two differ.

Causes incorrect 'percent full' to be reported amongst other problems.
Comment 1 Alasdair Kergon 2006-04-05 17:08:10 EDT
Created attachment 127371 [details]
dm-snapshot-unify-chunk_size.patch
Comment 4 Jason Baron 2006-05-09 13:16:38 EDT
committed in stream U4 build 34.26. A test kernel with this patch is available
from http://people.redhat.com/~jbaron/rhel4/
Comment 7 Red Hat Bugzilla 2006-08-10 19:04:17 EDT
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2006-0575.html

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