Re: benefits of journaling for soft RAID ?

1999-02-12 Thread Stephen C. Tweedie
Hi, On Thu, 11 Feb 1999 17:08:48 -0500 (EST), Billy Harvey <[EMAIL PROTECTED]> said: > I'm new to raid discussion. Why would you expect a 60 minute fsck > everytime? Would the boot up not skip that if the shutdown was clean? > Journaling seems like a complicated solution to save the time of an

Re: benefits of journaling for soft RAID ?

1999-02-12 Thread Stephen C. Tweedie
Hi, On Fri, 12 Feb 1999 00:02:02 +0100, Benno Senoner <[EMAIL PROTECTED]> said: > Stephen: do you have an estimate time for wich journaling will be > ready for use, even as an alpha-patch ? Hopefully two to three months for demonstration code. It should be usable this summer some time. > do y

Re: benefits of journaling for soft RAID ?

1999-02-12 Thread Stephen C. Tweedie
Hi, On Thu, 11 Feb 1999 11:04:37 -0800 (PST), Dan Hollis <[EMAIL PROTECTED]> said: > I assume the next filesystem (ext3?) will support journaling? > Hope, hope? Yes. ext3 came _this_ close "><" to finishing its first transaction commit yesterday, but there's something in the buffer setup which

Re: benefits of journaling for soft RAID ?

1999-02-12 Thread Benno Senoner
> > > You all miss the obvious point here, IMHO. The point of a journalled fs is > not that you save some time for fsck. Actually, even with a journalled > fs, I'd suggest doing an fsck from time to time just to be sure everything > is > fine. > Yes I fully agree that you should run fsck from tim

Re: benefits of journaling for soft RAID ?

1999-02-12 Thread Dr. Michael Weller
On Fri, 12 Feb 1999, Matti Aarnio wrote: > Billy Harvey <[EMAIL PROTECTED]> wonders: > > Benno Senoner writes: > ... > > > but actually the customer , in the worst case (in case of an fsck) must > > > turn on the power of the machine 30-60min (for a 90% full 70GB array) > > > before actual usa

Re: benefits of journaling for soft RAID ?

1999-02-12 Thread Malcolm Beattie
Matti Aarnio writes: > Take another; a popular public FTP site with storage > consisting of multiple 30-50 GB RAID5 filesystems. > Total capacity around 300 GB. It crashes for some > reason, when will it be online ? (That is a system > where a slow day is 50 GB wort

Re: benefits of journaling for soft RAID ?

1999-02-12 Thread Richard Jones
Benno Senoner wrote: > With today large disks 10+ GB avoiding the long fsck at boot time is a > feature which > is strongly needed. ( in this case NT has the advantage over Linux > because it > has some sort of journaling, therefore it boots relatively fast even on > an unclean shutdown). Somethi

Re: benefits of journaling for soft RAID ?

1999-02-11 Thread Matti Aarnio
Billy Harvey <[EMAIL PROTECTED]> wonders: > Benno Senoner writes: ... > > but actually the customer , in the worst case (in case of an fsck) must > > turn on the power of the machine 30-60min (for a 90% full 70GB array) > > before actual usage. > > In my case the machines can not remain powere

Re: benefits of journaling for soft RAID ?

1999-02-11 Thread Billy Harvey
Benno Senoner writes: > "Stephen C. Tweedie" wrote: > > > > Exactly. It keeps a record of in-progress filesystem operations so > > that entire complex operations, such as renames, always complete > > atomically even if you reboot half-way through. It eliminates the > > need for an fsck at

Re: benefits of journaling for soft RAID ?

1999-02-11 Thread Benno Senoner
"Stephen C. Tweedie" wrote: > Hi, > > On Thu, 11 Feb 1999 09:00:20 +0100, Benno Senoner <[EMAIL PROTECTED]> > said: > > > can someone please explain what journaling precisely does, (is this > > a sort of mechanism, which leaves the filesystem in a consistent > > status, even in case of disk write

Re: benefits of journaling for soft RAID ?

1999-02-11 Thread Dan Hollis
On Thu, 11 Feb 1999, Stephen C. Tweedie wrote: > On Thu, 11 Feb 1999 09:00:20 +0100, Benno Senoner <[EMAIL PROTECTED]> > said: > > can someone please explain what journaling precisely does, (is this > > a sort of mechanism, which leaves the filesystem in a consistent > > status, even in case of di

Re: benefits of journaling for soft RAID ?

1999-02-11 Thread Stephen C. Tweedie
Hi, On Thu, 11 Feb 1999 09:00:20 +0100, Benno Senoner <[EMAIL PROTECTED]> said: > can someone please explain what journaling precisely does, (is this > a sort of mechanism, which leaves the filesystem in a consistent > status, even in case of disk write interruption, due of power loss > or other

benefits of journaling for soft RAID ?

1999-02-11 Thread Benno Senoner
> Hello, > > > I had journaling and buffer commit code, but not any filesystem > personality stuff. Current status is that 2.2 is out (yay!) and > journaling is once again my top priority, and I've just started doing > real testing of basic filesystem transactions (currently only for the > simp