Red Hat Bugzilla – Bug 242799
IDE disk does not flush (standby) before poweroff
Last modified: 2014-03-16 23:07:14 EDT
Description of problem:
Since the IDE disks now attached as /dev/sd.. not as /dev/hd..
halt -h does not flush (write cache on the disk before poweroff) it on logout
hdparm -f /dev/sda
but it does not help.
Version-Release number of selected component (if applicable):
Shutdown F7 with IDE disk attached as /dev/sda
Steps to Reproduce:
1. Use F7
2. Use IDE disk
bad noise when poweroff
in FC6, FC5 there was not such a noise, I got the same noise several years
before in FC1 (if I not mistaken) and hdparm helps me to solve the problem in
My smolt profile number in your database is
00:1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE Controller (rev 03)
desc: "ATA TOSHIBA MK4019GA"
hdparm shouldn't be used for this anymore as it doesn't support libata drives
correctly. Flushing the drives needs to be done by halt (and the kernel)
It really should be done by the kernel; not sure why that would change between
IDE and libata.
In the manual of "halt" I see the following:
The -h flag puts all harddisks in standby mode just before halt or
poweroff. Right now this is
only implemented for IDE drives. A side effect of putting the drive in
standby mode is that the
write cache on the disk is flushed. This is important for IDE drives,
since the kernel doesn’t
flush the write-cache itself before poweroff.
The halt program uses /proc/ide/hd* to find all IDE disk devices, which
means that /proc needs
to be mounted when halt or poweroff is called or the -h switch will do
I know, that my disk does not flush before poweroff. Is there any solution?
Package name is now sysvinit in Fedora.
Kernel 2.6.21-1.3255 is in testing now with patches to fix this. Please test.
The problem has been solved with new kernel, at least for my hardware it works.
Thank you very much.
*** Bug 428762 has been marked as a duplicate of this bug. ***
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