Messages in this thread | | | Date | Sat, 28 Jun 2003 10:20:26 -0700 (PDT) | Subject | Re: 2.5.73-mm1 nbd: boot hang in add_disk at first call from nbd_init | From | "Randy.Dunlap" <> |
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> On Saturday 28 June 2003 12:55, Michael Frank wrote: >> On Saturday 28 June 2003 10:41, Andrew Morton wrote: >> > Michael Frank <mflt1@micrologica.com.hk> wrote: >> > > Changes were recently made to the nbd.c in 2.5.73-mm1 >> > >> > And tons more will be in -mm2, which I shall prepare right now. Please >> retest on that and if it still hangs, capture the output from pressing >> alt-sysrq-T. >> >> Legacy free, no serial port. >> >> >> >> Sorry, -mm2 hang at booting kernel on 2 machines. >> > > Oh Murphy! Bug: 250K log buffer causes a hang on boot. > > Sorry for the shock. I configured the log buffer bigger - 250K and it hangs > on boot. > > Default 14K log buffer all OK, the NBD hang is fixed too.
Default value of 14 is a shift count (2 << 14), which gives a 16 KB buffer. Did you enter '250' for the shift value? Yes, that wouldn't boot. Maybe consult the help text??
> This was my only config change besides that driver which didn't compile ;) > > I want a bigger log buffer in preparation for testing swsusp on 2.5. On 2.4, > the test io load prevent the big swsusp logs from making it to disk...
Andrew, do you want a min/max limit on the LOG_BUF_SHIFT value, now that Roman has added that feature for Kconfig?
~Randy
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