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Hello Noberto,
Norberto Meijome wrote:> Hi everyone,
> I've been using 7 for a couple of weeks now on my work laptop
(kickstarted by cooling issues while in 6.2, which seem to have largely gone in
7).
>
> I have a 100GB SATA drive in a Thinkpad Z60m with
>
> CPU: Intel(R) Pentium(R) M processor 2.00GHz (1995.02-MHz 686-class CPU)
> Origin = "GenuineIntel" Id = 0x6d8 Stepping = 8
>
Features=0xafe9fbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,TM,PBE>
> Features2=0x180<EST,TM2>
> real memory = 1609433088 (1534 MB)
> avail memory = 1567780864 (1495 MB)
>
> I installed 7 on a normal UFS disk, but then migrated to having /usr in a
UFS journaled partition , with a 1.5 GB journal on ad0s1h . I didn't have
any issue that I could directly relate to it. I had more hangs than now (i
reverted back to plain UFS due to too many lock ups). The lock ups didnt leave
any message or error anywhere - it seemed as if the disk subsystem stopped
accepting commands (or was waiting on something ...) - anything in memory would
work just fine, but as soon as disk access was needed, it 'd stall.
>
Did you check your harddrive? There are tools available in ports (sorry,
I forgotten how they are called) that can access the drives internal
fault statistics.
Maybe your drive has an error and locks up all of a sudden. Since a
journal leads to more disk activity it would be normal for a hardware
related error to happen more early.
I might be pretty wrong here, but the T60 has an internal movement
sensor that needs some software to turn of the hard drive. Maybe your
laptop has a sensor too, but the logic behind it is implemented in
hardware?
> Something else i also noticed is that, after every crash, I couldn't
just reboot and use my computer just fine, as I would have expected - maybe
I'm wrong here.
> I had to go into single user mode, and run a fsck /dev/ad0s1f.journal .
this takes about 4 minutes. Hardly any errors were ever found (as opposed to my
non-journal partitions, which had files de-referenced ,etc.) So I suppose, in
that regards, gjournal worked great.... but is the fsck needed??
>
> I am also very interested in what zfs has to offer. How reliable is it? I
am looking into using it both on my laptop, and as a filesystem for some large
storage , possibly.
You might want to search the list archives (especially freebsd-current)
to get some details on ZFS and possible problems regarding it. There
seems to be an issue with ZFS and Samba and/or NFS.
A nice summary is in the archives:
http://lists.freebsd.org/pipermail/freebsd-current/2007-August/076411.html
I don't know what the current status is, thou. And I never suffered from
this error. In fact I'm using a raidz with 4x400GB HDDs. One use is as a
storage for satellite video streams, so there are pretty big files
written to it using NFS.
One thing I really like about ZFS is that it gets rid of the old
partition/slice paradigm. You'll never be angry with yourself again
because you selected the wrong size for your partition/slices.
>
> thanks for any ideas, comments, pointers :)
>
> B
HTH
Christian
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