Re: Myth of the 1K blocksize on eckd - revisited

2004-04-01 Thread Fargusson.Alan
for large files. -Original Message- From: Arnd Bergmann [mailto:[EMAIL PROTECTED] Sent: Wednesday, March 31, 2004 4:38 AM To: [EMAIL PROTECTED] Subject: Re: Myth of the 1K blocksize on eckd - revisited On Wednesday 31 March 2004 01:36, Jim Sibley wrote: But, in general, I would say

Re: Myth of the 1K blocksize on eckd - revisited

2004-03-31 Thread Rob van der Heij
Jim Sibley wrote: - I'm sure other more skewed distributions would give different results. The best skewed distribution could be your own, so we may get the horse dead by this: Given this 4K filesystem, would I save space when I made it 1K blocks? I think running a few find -size commands would

Re: Myth of the 1K blocksize on eckd - revisited

2004-03-31 Thread Arnd Bergmann
On Wednesday 31 March 2004 01:36, Jim Sibley wrote: But, in general, I would say that the 4k blocksize is preferable in the majority of cases. The space lost to eckd overhead is probably worse than any advantages you might get with small blocksizes. Right. Of course one might just use

Re: Myth of the 1K blocksize on eckd - revisited

2004-03-31 Thread Gene Walters
Hi Everyone, I just put on SuSE SP3. When I IPL'd, it gives me these messages: Loading module dasd_mod dasd=$dasd ... insmod: dasd_mod: no module by that name found Loading module dasd_eckd_mod ...

SuSE SP3 Kernel panic: VFS: Unable to mount root fs on 5e:01 ( was Re: Myth of the 1K blocksize on eckd - revisited)

2004-03-31 Thread Daniel Jarboe
I just put on SuSE SP3. When I IPL'd, it gives me these messages: Loading module dasd_mod dasd=$dasd ... insmod: dasd_mod: no module by that name found Loading module dasd_eckd_mod ... insmod: dasd_eckd_mod: no module by that name found kmod: failed to exec /sbin/modprobe -s -k

Re: Myth of the 1K blocksize on eckd - revisited

2004-03-31 Thread Jim Sibley
In reply to Ron: The best skewed distribution could be your own, so we may get the horsedead by this: Given this 4K filesystem, would I save space when I made it 1K blocks? Agreed. I looked at /etc, which has a lot of small files and the average files size was 5900 bytes - not a goot candidate

Re: Myth of the 1K blocksize on eckd - revisited

2004-03-31 Thread Rod Furey
However, I could not recommend ext2 as a filesystem because it is too easily damanaged (sic) How so? Rod -- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO

Re: Myth of the 1K blocksize on eckd - revisited

2004-03-31 Thread Jim Sibley
Rod wrte: However, I could not recommend ext2 as a filesystem because it is too easily damanaged (sic) How so? The Linux file systems are heavily cached and allow dirty writes of the data - i.e., the data in memory is not immediately synced with the hardware copy. This is controlled by the

Myth of the 1K blocksize on eckd - revisited

2004-03-30 Thread Jim Sibley
Sorry for pushing this into the ground, but I'm still bothered by the it depends response for using 1K blocks on eckd devices. In the various file systems I've seen on various platforms, 1k blocks are only useful for very small files with none of them very big. So, to quantify this, I did some