Messages in this thread | | | Date | Thu, 18 Aug 2011 08:22:44 -0400 (EDT) | From | Justin Piszcz <> | Subject | Re: Kernel 3.0: Instant kernel crash when mounting CIFS (also crashes with linux-3.1-rc2 |
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On Thu, 18 Aug 2011, Justin Piszcz wrote:
> > > On Thu, 18 Aug 2011, Justin Piszcz wrote: > >> >> >> On Thu, 18 Aug 2011, J. R. Okajima wrote: >> >>> >>> Justin Piszcz: >>>> Does anyone know if any kernel supports CIFS w/out crashing? I'd like to >>>> backup some CIFS shares, thanks. >>>> >>>> >>>> mount -t cifs //w2/x /mnt -o user=user,pass=pass >>>> >>>> [ 881.388836] CIFS VFS: cifs_mount failed w/return code = -22 >>> ::: >>> >>> Since it failed mounting, this patch will help you. Although the patch >>> will fix one bug, there still may exist another problem. >>> >>> http://marc.info/?l=linux-cifs&m=131345112022031&w=2 >> >> Hi, >> >> Latest patch (this one) applied to linux-3.1-rc2 works, at least it mounted >> this time and did not instantly crash the kernel! >> >> I also tried the hostname again (and it did not crash the kernel, but it >> failed to mount). >> >> Used the IP and it mounted successfully: >> //10.0.0.11/x 28T 5.0T 23T 19% /mnt >> //10.0.0.11/y 19T 1.2T 18T 7% /mnt2 >> >> It has not crashed yet (which is good), I'll apply this patch to my >> production machine and test taking backups of this data and let you know >> if it crashes again, thanks! >> >> Justin. > > > Hello, > > It is working but very slowly: > > Device eth6 [10.0.1.2] (1/1): > ================================================================================ > Incoming: Outgoing: > Curr: 37.60 MByte/s Curr: 0.44 MByte/s > Avg: 4.98 MByte/s Avg: 0.09 MByte/s > Min: 0.00 MByte/s Min: 0.00 MByte/s > Max: 40.79 MByte/s Max: 0.48 MByte/s > Ttl: 1.45 GByte Ttl: 26.77 MByte > > Over 10GbE the other direction (Linux -> Windows (via Samba)) I get 500MiB/s, > is CIFS slow? > > I'll look into options to tweak the speed but this is very poor speed when > you have to transfer 5-10TB. However, it is not crashing anymore, so any > speed is better than that :) > > Justin.
Hi,
Mounting with: rw,uid=1000,gid=100,mode=0644,rsize=130048,wsize=1048576,credentials=/root/.cifs Same speed: Device eth6 [10.0.1.2] (1/1): ================================================================================ Incoming: Outgoing: Curr: 32.42 MByte/s Curr: 0.38 MByte/s Avg: 30.72 MByte/s Avg: 0.39 MByte/s Min: 0.00 MByte/s Min: 0.00 MByte/s Max: 43.64 MByte/s Max: 0.59 MByte/s Ttl: 20.15 GByte Ttl: 261.03 MByte
Thoughts?
Has anyone achieved > 30-40MB/s with CIFS? This is a 10GbE link (and yes JUMBO frames are enabled on both sides, and again, samba from Linux->Windows = 500MB/s)
Justin.
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