#1 - Had to rebuild a RAID array 3x8G raid5 set. mke2fs causes entire
operating system to hang due to "out of memory" condition (I've got 128Meg
in the machine). Looks like the attempted fixes in inode.c are not
successful yet in flushing the buffers. Got it to finally work by reducing
the RAID to 3x6G, and using 16384 for the bytes-per-inode -- this could've
been a show stopper (my RAID had failed).
same problem here with things like badblocks and software raid.
badblocks causes the load to go into the 20-30's, X only responds
every 5 minutes. loads of programmes dead afterwards. (afterwards is
usually when badblocks itself has run out of memory and died).
ingo's raid0145 is very useable with small raid chunk and filesystem
block sizes (eg 8kb chunk, 1024byte fs). but as i increase them i get
more and more processes dying with "out of memory" errors when i run
a bonnie benchmark on the raid device.
eg, running bonnie on a raid0145 device with 32kb raid chunk size,
and 4096byte e2fs block size is nearly guaranteed to bring my system
to it's knees, with most daemons dead afterwards.
cpu is an AMD k6 233mhz. RAM: 64MB sdram dimm. scsi is buslogic
BT-958. disks are 3 IBM u/w's and 1 quantum fast-narrow.
regards,
-- Paul Jakma paul@clubi.ie http://hibernia.clubi.ie PGP5 key: http://www.clubi.ie/jakma/publickey.txt ------------------------------------------- Fortune: A computer lets you make more mistakes faster than any other invention, with the possible exceptions of handguns and Tequilla. -- Mitch Ratcliffe
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