Hi Andrew,
on Thursday, 2007-05-17 at 06:47:39, you wrote:
> That sounds suspiciously like you forgot to enable tmpfs support in your 
> kernel.

Indeed, that's what it was 8-] It's working just fine now, thanks!
I'm still fighting with the recent 2.6.20 as it doesn't seem to
recognize my disk, but 2.6.17 is fine as well so far. Just dm-crypt is
*very* strange:
| cryptsetup  -s256 luksFormat /dev/hda5
| 
| WARNING!
| ========
| This will overwrite data on /dev/hda5 irrevocably.
| 
| Are you sure? (Type uppercase yes): YES
| Enter LUKS passphrase:
| Verify passphrase:
| Command successful.
| ann ~ # cryptsetup luksDump /dev/hda5
| automatic header conversion from 0.99 to 0.991 triggeredLUKS header information for /dev/hda5
| 
| Version:        1
| Cipher name:    aes
| Cipher mode:    cbc-essiv:sha256
| Hash spec:      sha1
| Payload offset: 2056
| MK bits:        256
| MK digest:      0a 1d c0 9b 6a 49 38 d1 f2 44 d4 e6 7e 53 2e 06 54 5d b7 9e
| MK salt:        7b 88 7b 2a 7a 46 5c 97 72 93 3a 13 be db 61 f9
|                 9c ca fb 60 fb d3 86 d2 67 aa e9 c5 9a 3b e8 62
| MK iterations:  0
| UUID:           d3001762-dede-4634-aaf5-9005c34702b0
| 
| Key Slot 0: ENABLED
|         Iterations:             11658
|         Salt:                   c9 0c 45 1f b5 83 46 ee 4f 09 10 f9 b6 40 8e ea
|                                 76 62 e3 f3 ed dc 4f 93 f4 ac 89 91 b0 83 26 55
|         Key material offset:    8
|         AF stripes:             4000
| Key Slot 1: DISABLED
| Key Slot 2: DISABLED
| Key Slot 3: DISABLED
| Key Slot 4: DISABLED
| Key Slot 5: DISABLED
| Key Slot 6: DISABLED
| Key Slot 7: DISABLED
| ann ~ # cryptsetup luksDump /dev/hda5
| /dev/hda5 is not a LUKS partition
| Command failed.

/dev/hda5 is not mounted or anything, and the second luksDump command
came just a second after the first one. WTF?!

And BTW, HD performance leaves much to be desired---is this normal for
a 250 MHz MIPS? My 68040/40 Amiga did not much worse over its 7 MHz bus:
| ann ~ # dd if=/dev/zero bs=1M of=/dev/hda5
| dd: writing `/dev/hda5': No space left on device
| 1871+0 records in
| 1870+0 records out
| 1961132544 bytes (2.0 GB) copied, 208.289 s, 9.4 MB/s
| ann ~ # hdparm /dev/hda
| 
| /dev/hda:
| multcount    = 32 (on)
| IO_support   =  1 (32-bit)
| unmaskirq    =  1 (on)
| using_dma    =  1 (on)
| keepsettings =  0 (off)
| readonly     =  0 (off)
| readahead    = 256 (on)
| geometry     = 19846/16/63, sectors = 20005650, start = 0

I was planning to put a partly crypted drive from my HPPA box in there,
and I hoped at about twice the clock it would perform better...

cheers!
	Matthias
-- 
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Fingerprint: 8C16 3F0A A6FC DF0D 19B0  8DEF 48D9 1700 FAC3 7665