Bug 25347

Summary:	Isodumper fail to flush before verify and telling all is done.
Product:	Mageia	Reporter:	Morgan Leijström <fri>
Component:	RPM Packages	Assignee:	Mageia tools maintainers <mageiatools>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	Normal	CC:	marja11, tmb, yvesbrungard
Version:	7
Target Milestone:	---
Hardware:	All
OS:	Linux
Whiteboard:
Source RPM:	isodumper-1.15	CVE:
Status comment:

Description Morgan Leijström 2019-08-23 19:11:40 CEST

Isodumper do not currently make sure write buffers are flushed before saying it is finished.  So user may pull it out before it is written (despite having been "verified" ?!

Suggestion, tip from tmb: "eject" informs the kernel that the device should be dismounted, and then the kernel flushes out the block-level writes before dismounting it. 

So before telling user it is done, issue "eject /dev/sdx" (change x)

Additionally, verifying the write can of course only be reliable after this flushing, so stick should be "ejected", then verified.

Here some trick is needed:  After ejecting the stick fdisk -l do not list it and trying to write using dd to it i get error No medium found.

(Sidenote: Launching isodumper at that moment it list the stick anyway)

So somehow /dev/sdx need be "unejected" however that is done.

Marja Van Waes 2019-08-24 22:00:25 CEST

CC: (none) => marja11, yves.brungard_mageia
Assignee: bugsquad => mageiatools

Comment 1 Thomas Backlund 2020-02-04 12:14:32 CET

An update for this issue has been pushed to the Mageia Updates repository.

https://advisories.mageia.org/MGAA-2020-0043.html

CC: (none) => tmb
Resolution: (none) => FIXED
Status: NEW => RESOLVED