Messages in this thread | | | Date | Mon, 8 Sep 2003 11:33:04 +0200 | From | Rogier Wolff <> | Subject | Re: First impressions of reiserfs4 |
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On Mon, Sep 08, 2003 at 01:08:26PM +0400, Oleg Drokin wrote: > Hello! > > On Mon, Sep 08, 2003 at 10:56:41AM +0200, Rogier Wolff wrote: > > > > There is no installation program that will fail with: "Sorry, > > > > you only have 100 million inodes free, this program will need > > > > 132 million after installation", and it allows me a quick way > > > > of counting the number of actual files on the disk.... > > > You cannot. statfs(2) only exports "Total number of inodes on disk" and > > > "number of free inodes on disk" values for fs. df substracts one from another one > > > to get "number of inodes in use". > > So, you report "oids_in_use + 100M" as total and "100M" as free inodes > > on disk. Voila!
> Yes, we thought about that too. Need to be careful to not overflow > "long int".
> And idea of filesystem with variable amount of inodes over time > sounds confusing to me, too. ]
SO? That's actually the case. So it's confusing. So you're confusing people even more by telling nothing. Great.
#define LARGE_NUMBER 100000
out->total_inodes = fs->oids_in_use + LARGE_NUMBER; if (out->total_inodes < fs->oids_in_use) out -> total_inods = MAXINT; out -> free_inodes = LARGE_NUMBER;
Three lines of code fixes that.
> Well, if current interface does not allow to see all the stuff you want to, > time to change (introduce new one) interface, anyway.
Fine, introduce a new interface. But report as much as you can on the old interface. Remember you can read/write/seek files using the 32bit interface even though the new (seek-, and stat-) interface uses 64 bits.
Roger.
-- ** R.E.Wolff@BitWizard.nl ** http://www.BitWizard.nl/ ** +31-15-2600998 ** *-- BitWizard writes Linux device drivers for any device you may have! --* **** "Linux is like a wigwam - no windows, no gates, apache inside!" **** - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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