Bug 224269 - document that sparse files is not recommended in release notes
document that sparse files is not recommended in release notes
Status: CLOSED NEXTRELEASE
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: python-virtinst (Show other bugs)
5.0
All Linux
medium Severity medium
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Assigned To: Don Domingo
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Depends On:
Blocks: 197865
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Reported: 2007-01-24 17:47 EST by Archana K. Raghavan
Modified: 2007-11-30 17:07 EST (History)
2 users (show)

See Also:
Fixed In Version: 5.0.0
Doc Type: Bug Fix
Doc Text:
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Last Closed: 2007-03-13 19:06:58 EDT
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


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Description Archana K. Raghavan 2007-01-24 17:47:23 EST
Description of problem:
There are several problems with using sparse files, listing down the bugzillas
to name a few for the sake of reference:

https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=219290
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=217764
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=218996

This bug is being opened just to track release notes. Release notes should
document that sparse files is not recommended.

Jeremy, sorry this got assigned to you. Can this be assigned to Don Domingo or
whoever is responsible for release notes.

Version-Release number of selected component (if applicable):5.0


How reproducible:


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Additional info:
Comment 1 Don Domingo 2007-01-24 21:08:55 EST
hmmm... we used to have a note reading:

<quote>
When guest operating systems are set to use sparse files, dom0 can run out of
disk space. Such occurences prevent guest disk writes from completing, and can
cause data loss in guests. To prevent this, use the option --nonsparse when
conducting a virt-install
</quote>

but we removed it as per BZ#218996 Comment 6 (i.e. users are already warned of
the dangers of using sparse files when they create guests that use them).

anyhow, will be including the above quote in the Release Notes Updates once
approved. please advise if any revisions are in order, or if it's good to go.

making this bug block release notes, for tracking purposes.

assigning bug to me

 
Comment 2 Archana K. Raghavan 2007-01-25 09:53:05 EST
Can we also talk about a performance hit while using sparse files as sct puts it
in https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=219290 Comment #11?

Thanks so much for the quick response.

Regards,
Archana
Comment 3 Don Domingo 2007-01-28 19:16:32 EST
for the release noes updates:

<quote>
When guest operating systems are set to use sparse files, dom0 can run out of
disk space. Such occurences prevent guest disk writes from completing, and can
cause data loss in guests. Further, guests that use sparse files do not
synchronize I/O safely.

As such, it is recommended that you use non-sparse files instead. To configure
guests to use non-sparse files, use the option --nonsparse when conducting a
virt-install.
</quote>

hope this works. thanks!
Comment 6 Don Domingo 2007-03-13 19:06:58 EDT
yes. thanks!

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