When moving from one disk to another, I did a dump of a large filesystem, like this:
mkdir ~/tmo && cd ~/tmp && dump -0f - /dev/devicenode | split
So now I have 99G in 100 files named xaa through xdv
However, when I try to restore it:
mount /mountpoint && cat ~/tmp/* | (cd /mountpoint && restore -rf -)
after cat spits out 2.18 GB (in the same spot every time), after restore creates a number of directories (but no files), I get the error:
no memory to extend symbol table
abort? [yn]



I fixed this by adding the following to my kernel config:

options MAXDSIZ="(1024*1024*1024)"
options MAXSSIZ="(1024*1024*1024)"
options DFLDSIZ="(1024*1024*1024)"

So it really was running out of memory, probably due to the large, complex directory structures.


I've seen two other posts about similar errors:
<http://groups.google.com/group/fa.freebsd.questions/browse_frm/ thread/c6fb6245f3f010dc/3b7762d8e1410102?lnk=st&q=%22no+memory+to +extend+symbol+table%22&rnum=5#3b7762d8e1410102> <http://groups.google.com/group/info.bsdi.users/browse_frm/thread/ 4b547bccf96807bb/bb08c14f7aa4a5e6?lnk=st&q=%22no+memory+to+extend +symbol+table%22&rnum=4#bb08c14f7aa4a5e6>

I'm sure that I have enough space on /tmp (since I symlinked it to a directory on a large disk), which is one proposed fix. Another proposed fix is to allow restore to get more than 512MB of RAM, but I'm not sure where to set that (since I'm not familiar with vm and I have no such limit in /etc/login.conf, and can find nothing in sysctl). It's not a RAM limit, because I have 1GB of RAM and 2.5 GB of swap.

The other proposed fix is to use interactive mode and restore less at a time, but if I do that hardlinks between directories may be broken and I need to retain those (unless they wouldn't be broken between successive restores, in which case I can do that).

Any ideas?

I'm running 6.2-RELEASE

-- David


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