This site is now 100% read-only, and retired.

My root filesystem is

Submitted by Anonymous on Thu 10 Aug 2006

Network mounted  <-> 2% 14 votes
Software RAID  <-> 14% 97 votes
Hardware RAID  <-> 9% 61 votes
LVM  <-> 10% 71 votes
Plain/Normal  <-> 64% 432 votes
Total 675 votes

 

 

 

Re: My root filesystem is
Posted by Anonymous (80.32.xx.xx) on Thu 10 Aug 2006 at 16:40
No LVM root? mmm... interesting... :)

[ Parent ]

Re: My root filesystem is
Posted by Nilshar (195.200.xx.xx) on Thu 10 Aug 2006 at 17:09
[ View Weblogs ]
I used to have a LVM root, but I switched to soft raid recently.

[ Parent ]

Re: My root filesystem is
Posted by Anonymous (24.175.xx.xx) on Fri 11 Aug 2006 at 02:11
And what about both? I mean lvm over raid....

[ Parent ]

Re: My root filesystem is
Posted by Nilshar (195.200.xx.xx) on Fri 11 Aug 2006 at 08:43
[ View Weblogs ]
Can be done of course. but really depend on what you need LVM for. if it's for flexibility, it sure can be usefull.
The only problem I see with LVM is : it's easy to do a mistake and loose a lot of data :/ it really need some practice on a non critical system for a few month imho.

[ Parent ]

Re: My root filesystem is
Posted by Anonymous (82.108.xx.xx) on Fri 11 Aug 2006 at 09:22
I use LTSP on Sid.

I therefore have my root mounted over NFS.

The machine runs LVM over software RAID.

This is so that I can use a fanless laptop as my client and the huge grunting, sweating server lives in the former coal hole and my wife doesn't complain about the noise.

Surely this is not so uncommon.

[ Parent ]

Re: My root filesystem is
Posted by Anonymous (24.222.xx.xx) on Sun 13 Aug 2006 at 12:18
LTSP with Etch, 2 notebooks and an AMD 64 3200+ which will be residing in the dungeon shortly 1 notebook is going wireless next week I hope.
No RAID or LVM yet, not that advanced for my humble brain.

[ Parent ]

Re: My root filesystem is
Posted by ajt (204.193.xx.xx) on Fri 11 Aug 2006 at 12:52
[ View Weblogs ]
Can I answer all?

My desktop system is ext3 on plain PC partitions on a single SATA disk.

My test system has all filesystems bar /boot in a LVM2 volumegroup which spans two old IBM disks. It's not using LVM2 mirroring or RAID. Other than an initrd issue some time ago, now fixed, it's been perfectly okay.

My home server is currently ext3 on plain PC partitions, on several small old EIDE disk but I plan to move most of the file systems onto xfs on LVM2 this weekend.

Eventually I plan to build/buy a new home server, and use RAID/LVM2 and export it's file system to all my other systems.

--
"It's Not Magic, It's Work"
Adam

[ Parent ]

Re: My root filesystem is
Posted by Anonymous (82.108.xx.xx) on Fri 11 Aug 2006 at 16:37
I'd suggest not using XFS at the moment.

I've been using XFS for about a year on the setup I describe above (the coal hole server), but it died with lots of I/O errors and "Unknown error (990)" on Sunday. Couldn't get the box to stay up for longer than about five minutes.

The only thing that I could find was dated April 2004 (http://oss.sgi.com/archives/xfs/2004-04/msg00130.html).

This points to this SGI bug:
http://oss.sgi.com/bugzilla/show_bug.cgi?id=323
which is still marked as NEW.

Tried xfs_repair and it gave the same list of problems each time, which suggests to me that it was not able to repair and I couldn't save the log reliably (for some reason the beginning or end of the file would be missing and xfs_repair would give the statement "Stopped" rather than going on to the end.

This disk contains my root, boot, tmp, usr, and var paths, so I rebuilt the box with Ext 3 on Monday evening and have had no problems since.

Although this is too short a time to definitely say that it is not a hardware issue, I am a little wary.

[ Parent ]

Re: My root filesystem is
Posted by Anonymous (62.224.xx.xx) on Fri 11 Aug 2006 at 17:08
beware that kernel 2.6.17 had some serious XFS bugs...

[ Parent ]

Re: My root filesystem is
Posted by ajt (84.12.xx.xx) on Fri 11 Aug 2006 at 18:44
[ View Weblogs ]

My Sarge box is still using 2.6.8, so I don't need to worry about 2.6.17 per se yet.

--
"It's Not Magic, It's Work"
Adam

[ Parent ]

Re: My root filesystem is
Posted by ajt (84.12.xx.xx) on Fri 11 Aug 2006 at 18:46
[ View Weblogs ]
Thanks for the warning. My first task is to migrate /srv and /home off their disk and so I can put a LVM on there first. I may considrer using ext3 for a while then.

--
"It's Not Magic, It's Work"
Adam

[ Parent ]

Re: My root filesystem is
Posted by Anonymous (198.144.xx.xx) on Sat 12 Aug 2006 at 20:09
/boot, / (root), and swap I've got as "plain".
Everything else I have under LVM.
/boot and / (root) are ext3 - using reiserfs for all other
LINUX filesystems (at least my Debian systems).
Not much to mirror to on single hard drive sytems (e.g. laptop).
Someday I'll get even snazzier, ... but that day's not today.
... etch --> stable ... LUKS? :-) ...
also planning some laptop upgrades in the not-too-horribly-distant-future.
Eventually I'll also have a hot swappable 2nd hard drive, so there may well
be some RAID-1 intermittently active there (and/or some fairly frequent backups
of more critical stuff).
I also plan to eventually get my desktop system from one hard drive, to
three - and to include various software RAID (probably mostly -5 and some -1,
and perhaps a wee bit of -0)
Hardware RAID *can* be great (very nice on some hardware) ... it can
also be sucky (there are some very poor hardware RAID implentations out
there too). But for small (2 or 3) disk systems, it's not nearly as
flexible as software RAID (e.g. with 2 or 3 disks, most hardware RAID doesn't
allow mixes of RAID-1, RAID-5, and RAID-0 and/or non-RAID to all be present
simultaneously on those drives. For some systems/applications, that might
not matter, but for others it's important/critical.
http://www.rawbw.com/~mp/linux/lvm/balug/

[ Parent ]

Re: My root filesystem is
Posted by flatfoot (213.219.xx.xx) on Sun 13 Aug 2006 at 18:40
poll name incorrect. make it "my user's root filesystem is" :)

[ Parent ]

Re: My root filesystem is
Posted by simonw (84.45.xx.xx) on Mon 14 Aug 2006 at 21:17
[ View Weblogs ]
Nah, MY "root" filesystem is ext3 on hardware RAID of 2 SATA disks with just a little bit of hardware cache.

At work most of the servers are software RAID 1 pairs, with ReiserFS 3, and a couple of servers with email or database roles have hardware RAID (although in general on the kind of cheap hardware it is on, I now think it would have been wiser to use software mirroring, enable the write cache on the disks, and take the data loss as and when the UPS gives up) and ReiserFS 3.

The XFS stuff moans elsewhere are either a smelly recent patch, or bad luck. Most of these filesystems do exactly what they say on the tin. Me I'd only deploy XFS where I needed its online snapshot capability, horses for courses.

[ Parent ]