[DRBD-user] problem with 3x 1,5TB partitions

Lars Ellenberg Lars.Ellenberg at linbit.com
Mon Nov 13 11:26:12 CET 2006

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


/ 2006-11-13 11:05:03 +0100
\ Ralf Gross:
> | What is warning: ''out of vmalloc space''
> |
> | For each device, drbd will (try to) allocate X MB of bitmap, plus some
> | constant amount (<1MB). X = storage_size_in_GB/32, so 1 TB storage -> 32
> | MB bitmap.
> |
> | By default Linux allocates 128MB to Vmalloc. For systems using more than
> | 4TB, this may cause an issue.
> |
> | If you get the following error message in /var/log/messages, Try a Linux
> | 2.6 hugemem kernel.
> |
> | kernel: allocation failed: out of vmalloc space - use vmalloc=<size> to
> | increase size.

options:
 * try with a custom built kernel
 * use amd64 and hope for the best
 * use drbd+
   single device up to 16TB, licence includes support.
   you still need enough ram, and (not only) we still
   recommend 64bit architechture for boxes holding
   that much storage.

-- 
: Lars Ellenberg                                  Tel +43-1-8178292-0  :
: LINBIT Information Technologies GmbH            Fax +43-1-8178292-82 :
: Schoenbrunner Str. 244, A-1120 Vienna/Europe   http://www.linbit.com :
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