Re: 2.5.69, IDE TCQ can't be enabled

From: Oleg Drokin (green@namesys.com)
Date: Mon May 12 2003 - 07:46:54 EST


Hello!

On Fri, May 09, 2003 at 08:38:51PM -0500, lkhelp@rekl.yi.org wrote:
> I started testing 2.5.69, and I can't seem to get TCQ enabled on my
> drives. The test-tcq.pl script indicates that both drives in this
> computer support TCQ:
> # ./test-tcq.pl
> /proc/ide/ide0/hda (WDC WD1200JB-00CRA1) supports TCQ
> /proc/ide/ide3/hdg (Maxtor 6E030L0) supports TCQ
> found reiserfs format "3.6" with standard journal
> Reiserfs journal params: device ide/host2/bus1/target0/lun0/par, size
> 8192, journal first block 18, max trans len 1024, max batch 900, max
> commit age 30, max trans age 30
> reiserfs: checking transaction log (ide/host2/bus1/target0/lun0/par) for
> (ide/host2/bus1/target0/lun0/par)

Just a note that we have found TCQ unusable on our IBM drives and we had
some reports about TCQ unusable on some WD drives.

Unusable means severe FS corruptions starting from mount.
So if your FSs will suddenly start to break, start looking for cause with
disabling TCQ, please.

Bye,
    Oleg
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