Hi, My ongoing research in preparation for my first use of an SSD has led me to NILFS and I have a few questions: 1) Is it supported for openSUSE 11.4? Web search suggests it is, but only indirectly (as far as I can find) in the form of mentions of the nilfs-utils package for 11.4. 2) Is NILFS a good choice for an SSD? 3) Is NILFS stable and reliable? 4) Are there caveats?If so, what are they? 5) Other questions I should be asking or answering? Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
El 12/06/11 11:40, Randall R Schulz escribió:
1) Is it supported for openSUSE 11.4?
It is enabled in the kernel.
4) Are there caveats?If so, what are they?
I guess you can't boot from it, grub legacy may not support it. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Sunday June 12 2011, Cristian Rodríguez wrote:
El 12/06/11 11:40, Randall R Schulz escribió:
1) Is it supported for openSUSE 11.4?
It is enabled in the kernel.
4) Are there caveats?If so, what are they?
I guess you can't boot from it, grub legacy may not support it.
I gather that means I shouldn't use it for /boot but it's OK for root, right? What would be a good choice for /boot? Ext4? And since you say "I guess," I'll ask why you guess that? 'Cause GRUB doesn't support it? Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Sun, Jun 12, 2011 at 12:31 PM, Randall R Schulz <rschulz@sonic.net> wrote:
On Sunday June 12 2011, Cristian Rodríguez wrote:
El 12/06/11 11:40, Randall R Schulz escribió:
1) Is it supported for openSUSE 11.4?
It is enabled in the kernel.
4) Are there caveats?If so, what are they?
I guess you can't boot from it, grub legacy may not support it.
I gather that means I shouldn't use it for /boot but it's OK for root, right? What would be a good choice for /boot? Ext4?
And since you say "I guess," I'll ask why you guess that? 'Cause GRUB doesn't support it?
Randall Schulz
I'm a big fan of ext2 for /boot. It is about as simple as it gets and everything out there can read it. FYI: Likely by 12.1, opensuse may just have a ext4 kernel driver and it will handle ext2/ext3/ext4, so you get the same driver for all 3 of those. Greg -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Sunday June 12 2011, Greg Freemyer wrote:
...
I'm a big fan of ext2 for /boot.
It is about as simple as it gets and everything out there can read it.
But the boot / root volume is on SSD and I want to exploit it _and_ preserve maximum lifetime (or whatever tradeoff I can decide is optimum between those to goals, to the extent they conflict). And I don't much care about what "out there" can understand the format. If the openSUSE installer disc can, little else matters on that front. (I just tried to run MemTest86+ from the current UBCD disc (5.0.3), and it failed to run, stalling immediately after presenting its initial display and showing zeroes for the memory speed...) I've read some more and am inclined away from NILFS, but I've got more studying to do.
FYI: Likely by 12.1, opensuse may just have a ext4 kernel driver and it will handle ext2/ext3/ext4, so you get the same driver for all 3 of those.
There are just so very many numbers between 11.4 and 12.1...
Greg
Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On 2011/06/12 16:23 (GMT-0700) Randall R Schulz composed:
On Sunday June 12 2011, Greg Freemyer wrote:
I'm a big fan of ext2 for /boot.
It is about as simple as it gets and everything out there can read it.
But the boot / root volume is on SSD and I want to exploit it _and_ preserve maximum lifetime (or whatever tradeoff I can decide is optimum
When Greg replied I got the impression he was implying via EXT2 that you don't want a journal on any SSD partition. EXT2 is the only filesystem I ever use on a discrete /boot partition.
(I just tried to run MemTest86+ from the current UBCD disc (5.0.3), and it failed to run, stalling immediately after presenting its initial display and showing zeroes for the memory speed...)
I got the impression via a Fedora dev list post a short time ago that to get memtest to run on Sandy Bridge requires v4.20.
FYI: Likely by 12.1, opensuse may just have a ext4 kernel driver and it will handle ext2/ext3/ext4, so you get the same driver for all 3 of those.
There are just so very many numbers between 11.4 and 12.1...
But not openSUSE release numbers, unless you maybe count those that include "M". 11.4 GM was last release. 12.1 is GM release next, reported for months already by Factory installations. -- "The wise are known for their understanding, and pleasant words are persuasive." Proverbs 16:21 (New Living Translation) Team OS/2 ** Reg. Linux User #211409 ** a11y rocks! Felix Miata *** http://fm.no-ip.com/ -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Sun, Jun 12, 2011 at 7:23 PM, Randall R Schulz <rschulz@sonic.net> wrote:
On Sunday June 12 2011, Greg Freemyer wrote:
...
I'm a big fan of ext2 for /boot.
It is about as simple as it gets and everything out there can read it.
But the boot / root volume is on SSD and I want to exploit it _and_ preserve maximum lifetime (or whatever tradeoff I can decide is optimum between those to goals, to the extent they conflict).
I updated http://en.opensuse.org/SDB:SSD_discard_%28trim%29_support to talk about fstrim this afternoon. But I don't have any discussion of a good choice for /boot. Why don't you research the FITRIM ioctl as well as wiper.sh (from the hdparm package). If either of them support ext2, I'd still go for the simplicity of ext2 for /boot. I believe both support ext4 and xfs at a minimum, but I don't know about ext2 or ext3 for either. Also, it could be that the ext4 filesystem driver when using the ext2 or ext3 on disk format will support one or both. This actually sounds like a good question to take straight to the ext4 kernel mailinglist. (Subscription NOT needed to post to it.) If you find out any new info, please add it to the above page, or ask me to. Greg -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
On Sunday June 12 2011, Greg Freemyer wrote:
On Sun, Jun 12, 2011 at 7:23 PM, Randall R Schulz <rschulz@sonic.net> wrote:
On Sunday June 12 2011, Greg Freemyer wrote:
...
I'm a big fan of ext2 for /boot.
It is about as simple as it gets and everything out there can read it.
But the boot / root volume is on SSD and I want to exploit it _and_ preserve maximum lifetime (or whatever tradeoff I can decide is optimum between those to goals, to the extent they conflict).
I realize I'm confusing myself. The requirements for /boot are unrelated to it being on an SSD, since it's used so very little. Root, however, must be optimized for SSD. ... Whatever that turns out to mean. I'm still pretty short on those details.
I updated http://en.opensuse.org/SDB:SSD_discard_%28trim%29_support to talk about fstrim this afternoon. But I don't have any discussion of a good choice for /boot.
Why don't you research the FITRIM ioctl as well as wiper.sh (from the hdparm package). If either of them support ext2, I'd still go for the simplicity of ext2 for /boot.
The SSD I got is essentially a RAID 0 device, so none of the TRIM-based solutions are relevant (at least that's what I've read in several places, now). It's all on ITGC. I don't know if the "wiper" thing is useful for this device.
I believe both support ext4 and xfs at a minimum, but I don't know about ext2 or ext3 for either.
Also, it could be that the ext4 filesystem driver when using the ext2 or ext3 on disk format will support one or both. This actually sounds like a good question to take straight to the ext4 kernel mailinglist. (Subscription NOT needed to post to it.)
If you find out any new info, please add it to the above page, or ask me to.
OK. My research is ongoing.
Greg
Randall Schulz -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org
participants (4)
-
Cristian Rodríguez -
Felix Miata -
Greg Freemyer -
Randall R Schulz