Thread: Re: [Aoetools-discuss] Vblade question
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From: <de...@we...> - 2007-02-22 21:33:12
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Hi ! > Any ideas what I did wrong and/or any suggestions for troubleshooting=3F yes, you did a very common mistake! i wonder that you even ever "see" that file. why=3F you simply cannot use ext3 (and any other ordinary filesystem like ext2,re= iser,xfs,jfs,fat,ntfs) as filesystem for shared storage, i.e. for somethin= g you want to mount twice at the same time. you either need a cluster file= system like ocfs for that =5For=5F need to make sure, that the device is mount= ed either on host A =5For=5F host B. this is a very common mistake i have seen very very often in shared storag= e environments - take a look at the vmware forum - there are tons of peopl= e who wonder about getting "strange effects" because they are using a phys= ical device on the host and inside a VM at the same time. btw - those "strange effects" means: you are corrupting your filesystem, s= o immediatly unmount and do an fsck. regards roland > -----Urspr=FCngliche Nachricht----- > Von: "Lin Shen (lshen)" <ls...@ci...> > Gesendet: 22.02.07 22:12:22 > An: <aoe...@li...> > Betreff: [Aoetools-discuss] Vblade question > Hi, >=20 > I have two linux boxes A and B with ip addresses 172.19.140.24 and > 172.19.140.30, so I think there are the same LAN, right=3F >=20 > On A, I started vblade and also created an ext3 file system on the same > block device: >=20 > A> vblade 2 0 eth0 /dev/hda8 > A> mkfs -t ext3 /dev/hda8 > A> mount -t ext3 /dev/hda8 /mnt/ext3 >=20 > On B, I mounted the same file system: >=20 > B> mount -t ext3 /dev/etherd/e2.0 /mnt/ext3 >=20 > But I found out that it takes a long time (a few minutes) for a file > created on A under /mnt/ext3 to appear on B under /mnt/ext3 and vice > versa. Any ideas what I did wrong and/or any suggestions for > troubleshooting=3F >=20 > Thanks > Lin >=20 > ------------------------------------------------------------------------= - > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share = your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php=3Fpage=3Djoin.php&p=3Dsourceforge&CID=3DDEVDE= V > =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F > Aoetools-discuss mailing list > Aoe...@li... > https://lists.sourceforge.net/lists/listinfo/aoetools-discuss >=20 =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F In 5 Schritten zur eigenen Homepage. Jetzt Domain sichern und gestalten!=20 Nur 3,99 EUR/Monat! http://www.maildomain.web.de/=3Fmc=3D021114 |
From: Don H. <Don...@pm...> - 2007-02-22 21:34:07
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> -----Original Message----- > Behalf Of Lin Shen (lshen) > Sent: Thursday, February 22, 2007 1:12 PM > To: aoe...@li... > Subject: [Aoetools-discuss] Vblade question > > I have two linux boxes A and B with ip addresses > 172.19.140.24 and 172.19.140.30, so I think there are the > same LAN, right? Yes. > > On A, I started vblade and also created an ext3 file system > on the same block device: > > A> vblade 2 0 eth0 /dev/hda8 > A> mkfs -t ext3 /dev/hda8 > A> mount -t ext3 /dev/hda8 /mnt/ext3 > > On B, I mounted the same file system: > > B> mount -t ext3 /dev/etherd/e2.0 /mnt/ext3 > You do not want to do this. "A" is exporting a block device, not a file system (if you want to export at the filesystem level use NFS). The correct procedure should be: A> vblade 2 0 eth0 /dev/hda8 B> mkfs -t ext3 /dev/etherd/e2.0 B> mount -t ext3 /dev/etherd/e2.0 /mnt/ext3 |
From: Lin S. \(lshen\) <ls...@ci...> - 2007-02-22 21:41:06
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=20 > -----Original Message----- > From: Don Hiatt [mailto:Don...@pm...]=20 > Sent: Thursday, February 22, 2007 1:34 PM > To: Lin Shen (lshen); aoe...@li... > Subject: RE: [Aoetools-discuss] Vblade question >=20 > =20 >=20 > > -----Original Message----- > > Behalf Of Lin Shen (lshen) > > Sent: Thursday, February 22, 2007 1:12 PM > > To: aoe...@li... > > Subject: [Aoetools-discuss] Vblade question > >=20 > > I have two linux boxes A and B with ip addresses > > 172.19.140.24 and 172.19.140.30, so I think there are the same LAN,=20 > > right? >=20 > Yes. >=20 > >=20 > > On A, I started vblade and also created an ext3 file system on the=20 > > same block device: > >=20 > > A> vblade 2 0 eth0 /dev/hda8 > > A> mkfs -t ext3 /dev/hda8 > > A> mount -t ext3 /dev/hda8 /mnt/ext3 > >=20 > > On B, I mounted the same file system: > >=20 > > B> mount -t ext3 /dev/etherd/e2.0 /mnt/ext3 > >=20 >=20 > You do not want to do this. "A" is exporting a block device,=20 > not a file system (if you want to export at the filesystem=20 > level use NFS). >=20 > The correct procedure should be: > A> vblade 2 0 eth0 /dev/hda8 > B> mkfs -t ext3 /dev/etherd/e2.0 > B> mount -t ext3 /dev/etherd/e2.0 /mnt/ext3 >=20 My real intension is to run GFS on top of AoE (in replacement of GNBD). I did the same thing as what I described with ext3 and got the same result. I thought it's because of GFS, so I tried with ext3. Lin |
From: Ed L. C. <ec...@co...> - 2007-02-23 15:55:20
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On Thu, Feb 22, 2007 at 01:40:56PM -0800, Lin Shen (lshen) wrote: ... > My real intension is to run GFS on top of AoE (in replacement of GNBD). > I did the same thing as what I described with ext3 and got the same > result. I thought it's because of GFS, so I tried with ext3. AoE works with GFS for many people, so in your shoes I'd be looking at the GFS configuration, especially to make sure that you haven't changed anything since switching from GNBD. The ext3 thing is just a distraction. You might also check out some GFS literature to get a clearer grasp of what GFS is doing. Then you can be more focused in your efforts (e.g., you won't be tempted to try things like ext3 from multiple hosts.) -- Ed L Cashin <ec...@co...> |
From: Lin S. \(lshen\) <ls...@ci...> - 2007-02-24 01:07:12
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=20 > -----Original Message----- > From: Ed L. Cashin [mailto:ec...@co...]=20 > Sent: Friday, February 23, 2007 7:49 AM > To: Lin Shen (lshen) > Cc: Don Hiatt; aoe...@li... > Subject: Re: [Aoetools-discuss] Vblade question >=20 > On Thu, Feb 22, 2007 at 01:40:56PM -0800, Lin Shen (lshen) wrote: > ... > > My real intension is to run GFS on top of AoE (in=20 > replacement of GNBD). > > I did the same thing as what I described with ext3 and got the same=20 > > result. I thought it's because of GFS, so I tried with ext3. >=20 > AoE works with GFS for many people, so in your shoes I'd be=20 > looking at the GFS configuration, especially to make sure=20 > that you haven't changed anything since switching from GNBD. I wonder if others are using vblade+AoE and GFS, or Coraid storage device+AoE and GFS instead? I'm using vblade. The same GFS configuration is used for both AoE and GNBD.=20 =20 Lin =20 >=20 > The ext3 thing is just a distraction. You might also check=20 > out some GFS literature to get a clearer grasp of what GFS is=20 > doing. Then you can be more focused in your efforts (e.g.,=20 > you won't be tempted to try things like ext3 from multiple hosts.) >=20 > -- > Ed L Cashin <ec...@co...> >=20 |
From: Ed L. C. <ec...@co...> - 2007-02-26 16:16:00
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On Fri, Feb 23, 2007 at 05:06:59PM -0800, Lin Shen (lshen) wrote: ... > > From: Ed L. Cashin [mailto:ec...@co...] ... > > AoE works with GFS for many people, so in your shoes I'd be > > looking at the GFS configuration, especially to make sure > > that you haven't changed anything since switching from GNBD. > > I wonder if others are using vblade+AoE and GFS, or Coraid storage > device+AoE and GFS instead? I'm using vblade. The same GFS configuration > is used for both AoE and GNBD. I'm thinking of people who are using Coraid equipment as the AoE targets under a GFS. I would expect kvblade to be a better choice for GFS than vblade, but I don't know how many people are doing that. -- Ed L Cashin <ec...@co...> |
From: Lin S. \(lshen\) <ls...@ci...> - 2007-02-27 23:58:55
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=20 > -----Original Message----- > From: Ed L. Cashin [mailto:ec...@co...]=20 > Sent: Monday, February 26, 2007 8:12 AM > To: Lin Shen (lshen) > Cc: Don Hiatt; aoe...@li... > Subject: Re: [Aoetools-discuss] Vblade question >=20 > On Fri, Feb 23, 2007 at 05:06:59PM -0800, Lin Shen (lshen) wrote: > ... > > > From: Ed L. Cashin [mailto:ec...@co...] > ... > > > AoE works with GFS for many people, so in your shoes I'd=20 > be looking=20 > > > at the GFS configuration, especially to make sure that=20 > you haven't=20 > > > changed anything since switching from GNBD. > >=20 > > I wonder if others are using vblade+AoE and GFS, or Coraid storage > > device+AoE and GFS instead? I'm using vblade. The same GFS=20 > > device+configuration > > is used for both AoE and GNBD.=20 >=20 > I'm thinking of people who are using Coraid equipment as the=20 > AoE targets under a GFS. I would expect kvblade to be a=20 > better choice for GFS than vblade, but I don't know how many=20 > people are doing that. After some more experiments, I'm now convinced that running vblade and GFS on the same box doesn't work. At least, I haven't figured out how to make it to work. As long as I only run GFS on the client nodes, everything is fine. Once I mount GFS on the target (the original block device that I exported htrough vblade, i.e., /dev/hda8), file system corruption occurs. I think this is similar to running GFS and GNBD server on the same box. In that case, GNBD server must switch off caching. But I didn't see a way to switch off vblade caching if it is caching. I ran the same bonnie++ tests on a GFS+GNBD setup and GFS+AoE setup, the results are fairly comparable. I thought AoE would improve the performance significantly given its much lighter. Lin=20 BTW, according to its TODO, kvblade doesn't performance well with real block device yet. Lin =20 >=20 > -- > Ed L Cashin <ec...@co...> >=20 |
From: Adi K. <ad...@cg...> - 2007-02-28 07:40:44
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Hi! > After some more experiments, I'm now convinced that running vblade and > GFS on the same box doesn't work. At least, I haven't figured out how to > make it to work. As long as I only run GFS on the client nodes, > everything is fine. Once I mount GFS on the target (the original block > device that I exported htrough vblade, i.e., /dev/hda8), file system > corruption occurs. I think this is similar to running GFS and GNBD > server on the same box. In that case, GNBD server must switch off > caching. But I didn't see a way to switch off vblade caching if it is > caching. Hmmm... are you using /dev/hda8 on the local machine and /dev/etherd/eX.Y on all the others? If that is the case, did you try to use /dev/etherd/eX.Y on the local machine as well? Do corruptions occur that way? > I ran the same bonnie++ tests on a GFS+GNBD setup and GFS+AoE setup, the > results are fairly comparable. I thought AoE would improve the > performance significantly given its much lighter. Did you try this on GBit network? ...with Jumbo Frames? IMO the performance should increase. To detect performance bottle necks while testing I'd recommend "dstat"[1] to investigate what is going to happen while testing. -- Adi [1] http://dag.wieers.com/home-made/dstat/ |
From: Ed L. C. <ec...@co...> - 2007-02-28 16:31:46
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On Tue, Feb 27, 2007 at 03:58:36PM -0800, Lin Shen (lshen) wrote: ... > But I didn't see a way to switch off vblade caching if it is > caching. That would be O_DIRECT. There's been some discussion of it here on the mailing list and there is contrib/o_direct.diff in vblade-14. Last time I checked, gmane was doing a better archiving and search job than sourceforge. http://dir.gmane.org/gmane.network.aoe.aoetools.general -- Ed L Cashin <ec...@co...> |
From: Lin S. \(lshen\) <ls...@ci...> - 2007-02-28 21:00:51
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=20 > -----Original Message----- > From: Ed L. Cashin [mailto:ec...@co...]=20 > Sent: Wednesday, February 28, 2007 8:30 AM > To: Lin Shen (lshen) > Cc: Don Hiatt; aoe...@li... > Subject: Re: [Aoetools-discuss] Vblade question >=20 > On Tue, Feb 27, 2007 at 03:58:36PM -0800, Lin Shen (lshen) wrote: > ... > > But I didn't see a way to switch off vblade caching if it=20 > is caching. >=20 > That would be O_DIRECT. There's been some discussion of it=20 > here on the mailing list and there is contrib/o_direct.diff=20 > in vblade-14. I gave that a try, and it worked. The file corruption problem is gone while running GFS on the target, but the performance has dropped significantly based on bonnie. Lin=20 >=20 > Last time I checked, gmane was doing a better archiving and=20 > search job than sourceforge. >=20 > http://dir.gmane.org/gmane.network.aoe.aoetools.general >=20 >=20 > -- > Ed L Cashin <ec...@co...> >=20 |
From: Bernard L. <be...@va...> - 2007-02-28 21:57:03
|
Hi Lin: Have you considered trying out kvblade or Torbjorn's aoeserver / qaoed ? Cheers, Bernard On 2/28/07, Lin Shen (lshen) <ls...@ci...> wrote: > > > > -----Original Message----- > > From: Ed L. Cashin [mailto:ec...@co...] > > Sent: Wednesday, February 28, 2007 8:30 AM > > To: Lin Shen (lshen) > > Cc: Don Hiatt; aoe...@li... > > Subject: Re: [Aoetools-discuss] Vblade question > > > > On Tue, Feb 27, 2007 at 03:58:36PM -0800, Lin Shen (lshen) wrote: > > ... > > > But I didn't see a way to switch off vblade caching if it > > is caching. > > > > That would be O_DIRECT. There's been some discussion of it > > here on the mailing list and there is contrib/o_direct.diff > > in vblade-14. > > I gave that a try, and it worked. The file corruption problem is gone > while running GFS on the target, but the performance has dropped > significantly based on bonnie. > > Lin > > > > > Last time I checked, gmane was doing a better archiving and > > search job than sourceforge. > > > > http://dir.gmane.org/gmane.network.aoe.aoetools.general > > > > > > -- > > Ed L Cashin <ec...@co...> > > > > ------------------------------------------------------------------------- > Take Surveys. Earn Cash. Influence the Future of IT > Join SourceForge.net's Techsay panel and you'll get the chance to share your > opinions on IT & business topics through brief surveys-and earn cash > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV > _______________________________________________ > Aoetools-discuss mailing list > Aoe...@li... > https://lists.sourceforge.net/lists/listinfo/aoetools-discuss > |
From: Lin S. \(lshen\) <ls...@ci...> - 2007-02-28 23:46:56
|
kvblade has a limitation that it's very slow with real block device. I haven't tried aoeserver or qaoed. Do they allow running GFS on the target, and if yes how about the performance? Do you have a pointer to them, tried to google them, but didn't find anything. Lin=20 > -----Original Message----- > From: Bernard Li [mailto:be...@va...]=20 > Sent: Wednesday, February 28, 2007 1:57 PM > To: Lin Shen (lshen) > Cc: Ed L. Cashin; Don Hiatt; aoe...@li... > Subject: Re: [Aoetools-discuss] Vblade question >=20 > Hi Lin: >=20 > Have you considered trying out kvblade or Torbjorn's=20 > aoeserver / qaoed ? >=20 > Cheers, >=20 > Bernard >=20 > On 2/28/07, Lin Shen (lshen) <ls...@ci...> wrote: > > > > > > > -----Original Message----- > > > From: Ed L. Cashin [mailto:ec...@co...] > > > Sent: Wednesday, February 28, 2007 8:30 AM > > > To: Lin Shen (lshen) > > > Cc: Don Hiatt; aoe...@li... > > > Subject: Re: [Aoetools-discuss] Vblade question > > > > > > On Tue, Feb 27, 2007 at 03:58:36PM -0800, Lin Shen (lshen) wrote: > > > ... > > > > But I didn't see a way to switch off vblade caching if it > > > is caching. > > > > > > That would be O_DIRECT. There's been some discussion of=20 > it here on=20 > > > the mailing list and there is contrib/o_direct.diff in vblade-14. > > > > I gave that a try, and it worked. The file corruption=20 > problem is gone=20 > > while running GFS on the target, but the performance has dropped=20 > > significantly based on bonnie. > > > > Lin > > > > > > > > Last time I checked, gmane was doing a better archiving=20 > and search=20 > > > job than sourceforge. > > > > > > http://dir.gmane.org/gmane.network.aoe.aoetools.general > > > > > > > > > -- > > > Ed L Cashin <ec...@co...> > > > > > > >=20 > ---------------------------------------------------------------------- > > --- Take Surveys. Earn Cash. Influence the Future of IT Join=20 > > SourceForge.net's Techsay panel and you'll get the chance to share=20 > > your opinions on IT & business topics through brief=20 > surveys-and earn=20 > > cash=20 > >=20 > = http://www.techsay.com/default.php?page=3Djoin.php&p=3Dsourceforge&CID=3D= DEV > > DEV _______________________________________________ > > Aoetools-discuss mailing list > > Aoe...@li... > > https://lists.sourceforge.net/lists/listinfo/aoetools-discuss > > >=20 |
From: Bernard L. <be...@va...> - 2007-02-28 23:57:45
|
Hi Lin: Please see the other thread in this mailing-list: http://sourceforge.net/mailarchive/message.php?msg_id=38291981 I am currently facing a kernel panic when I use aoeserver with CentOS 4.4 when I export multiple targets in a quick loop. And qaoed has an issue where if you share out more than 8 targets, it will segfault. But I am sure Torbjorn will take a look at it when he has time :-) Regarding slow performance with real block device with kvblade - how about sharing the partition out via loop device, is it slow as well? If you are using a newer kernel, you may have better luck with aoeserver than me... Cheers, Bernard On 2/28/07, Lin Shen (lshen) <ls...@ci...> wrote: > kvblade has a limitation that it's very slow with real block device. I > haven't tried aoeserver or qaoed. Do they allow running GFS on the > target, and if yes how about the performance? Do you have a pointer to > them, tried to google them, but didn't find anything. > > Lin > > > -----Original Message----- > > From: Bernard Li [mailto:be...@va...] > > Sent: Wednesday, February 28, 2007 1:57 PM > > To: Lin Shen (lshen) > > Cc: Ed L. Cashin; Don Hiatt; aoe...@li... > > Subject: Re: [Aoetools-discuss] Vblade question > > > > Hi Lin: > > > > Have you considered trying out kvblade or Torbjorn's > > aoeserver / qaoed ? > > > > Cheers, > > > > Bernard > > > > On 2/28/07, Lin Shen (lshen) <ls...@ci...> wrote: > > > > > > > > > > -----Original Message----- > > > > From: Ed L. Cashin [mailto:ec...@co...] > > > > Sent: Wednesday, February 28, 2007 8:30 AM > > > > To: Lin Shen (lshen) > > > > Cc: Don Hiatt; aoe...@li... > > > > Subject: Re: [Aoetools-discuss] Vblade question > > > > > > > > On Tue, Feb 27, 2007 at 03:58:36PM -0800, Lin Shen (lshen) wrote: > > > > ... > > > > > But I didn't see a way to switch off vblade caching if it > > > > is caching. > > > > > > > > That would be O_DIRECT. There's been some discussion of > > it here on > > > > the mailing list and there is contrib/o_direct.diff in vblade-14. > > > > > > I gave that a try, and it worked. The file corruption > > problem is gone > > > while running GFS on the target, but the performance has dropped > > > significantly based on bonnie. > > > > > > Lin > > > > > > > > > > > Last time I checked, gmane was doing a better archiving > > and search > > > > job than sourceforge. > > > > > > > > http://dir.gmane.org/gmane.network.aoe.aoetools.general > > > > > > > > > > > > -- > > > > Ed L Cashin <ec...@co...> > > > > > > > > > > > > ---------------------------------------------------------------------- > > > --- Take Surveys. Earn Cash. Influence the Future of IT Join > > > SourceForge.net's Techsay panel and you'll get the chance to share > > > your opinions on IT & business topics through brief > > surveys-and earn > > > cash > > > > > http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEV > > > DEV _______________________________________________ > > > Aoetools-discuss mailing list > > > Aoe...@li... > > > https://lists.sourceforge.net/lists/listinfo/aoetools-discuss > > > > > > |
From: <wo...@pi...> - 2007-03-01 14:43:00
|
I found and fixed a few bugs in qaoed today. Turns out that I never actually tested exporting block-devices and that it didnt support files larger then 2gigabytes. I might have broken the MacOSX-port .. ill try to fix that in the next few weeks. More testing is needed, and if you run into problems please send me the core-file and Ill have a look at it. http://pi.nxs.se/~wowie/qaoed.tgz Kind regards Torbjorn |
From: <de...@we...> - 2007-02-22 22:04:17
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>>you either need a cluster filesystem like ocfs for that.... >My real intension is to run GFS on top of AoE (in replacement of GNBD). .....or that one :) > -----Urspr=FCngliche Nachricht----- > Von: de...@we... > Gesendet: 22.02.07 22:33:05 > An: <aoe...@li...> > Betreff: Re: [Aoetools-discuss] Vblade question > Hi ! >=20 > > Any ideas what I did wrong and/or any suggestions for troubleshooting=3F= >=20 > yes, you did a very common mistake! > i wonder that you even ever "see" that file. > why=3F > you simply cannot use ext3 (and any other ordinary filesystem like ext2,= reiser,xfs,jfs,fat,ntfs) as filesystem for shared storage, i.e. for someth= ing you want to mount twice at the same time. you either need a cluster fi= lesystem like ocfs for that =5For=5F need to make sure, that the device is mou= nted either on host A =5For=5F host B. >=20 > this is a very common mistake i have seen very very often in shared stor= age environments - take a look at the vmware forum - there are tons of peo= ple who wonder about getting "strange effects" because they are using a ph= ysical device on the host and inside a VM at the same time. >=20 > btw - those "strange effects" means: you are corrupting your filesystem,= so immediatly unmount and do an fsck. >=20 > regards > roland >=20 >=20 > > -----Urspr=FCngliche Nachricht----- > > Von: "Lin Shen (lshen)" <ls...@ci...> > > Gesendet: 22.02.07 22:12:22 > > An: <aoe...@li...> > > Betreff: [Aoetools-discuss] Vblade question >=20 >=20 > > Hi, > >=20 > > I have two linux boxes A and B with ip addresses 172.19.140.24 and > > 172.19.140.30, so I think there are the same LAN, right=3F > >=20 > > On A, I started vblade and also created an ext3 file system on the sam= e > > block device: > >=20 > > A> vblade 2 0 eth0 /dev/hda8 > > A> mkfs -t ext3 /dev/hda8 > > A> mount -t ext3 /dev/hda8 /mnt/ext3 > >=20 > > On B, I mounted the same file system: > >=20 > > B> mount -t ext3 /dev/etherd/e2.0 /mnt/ext3 > >=20 > > But I found out that it takes a long time (a few minutes) for a file > > created on A under /mnt/ext3 to appear on B under /mnt/ext3 and vice > > versa. Any ideas what I did wrong and/or any suggestions for > > troubleshooting=3F > >=20 > > Thanks > > Lin > >=20 > > ----------------------------------------------------------------------= --- > > Take Surveys. Earn Cash. Influence the Future of IT > > Join SourceForge.net's Techsay panel and you'll get the chance to shar= e your > > opinions on IT & business topics through brief surveys-and earn cash > > http://www.techsay.com/default.php=3Fpage=3Djoin.php&p=3Dsourceforge&CID=3DDEV= DEV > > =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F > > Aoetools-discuss mailing list > > Aoe...@li... > > https://lists.sourceforge.net/lists/listinfo/aoetools-discuss > >=20 >=20 >=20 =5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F Viren-Scan f=FCr Ihren PC! Jetzt f=FCr jeden. Sofort, online und kostenlos. Gleich testen! http://www.pc-sicherheit.web.de/freescan/=3Fmc=3D022222 |
From: Lin S. \(lshen\) <ls...@ci...> - 2007-02-22 22:59:27
|
=20 > -----Original Message----- > From: de...@we... [mailto:de...@we...]=20 > Sent: Thursday, February 22, 2007 2:04 PM > To: aoe...@li...; Lin Shen (lshen) > Subject: Re: [Aoetools-discuss] Vblade question >=20 >=20 > >>you either need a cluster filesystem like ocfs for that.... >=20 > >My real intension is to run GFS on top of AoE (in=20 > replacement of GNBD). >=20 > .....or that one :) I think I'm right on this, but still can't figure out why it takes = forever for stuff to be propagated from one node to another. Lin =20 >=20 >=20 >=20 > > -----Urspr=FCngliche Nachricht----- > > Von: de...@we... > > Gesendet: 22.02.07 22:33:05 > > An: <aoe...@li...> > > Betreff: Re: [Aoetools-discuss] Vblade question >=20 >=20 > > Hi ! > >=20 > > > Any ideas what I did wrong and/or any suggestions for=20 > troubleshooting? > >=20 > > yes, you did a very common mistake! > > i wonder that you even ever "see" that file. > > why? > > you simply cannot use ext3 (and any other ordinary=20 > filesystem like ext2,reiser,xfs,jfs,fat,ntfs) as filesystem=20 > for shared storage, i.e. for something you want to mount=20 > twice at the same time. you either need a cluster filesystem=20 > like ocfs for that _or_ need to make sure, that the device is=20 > mounted either on host A _or_ host B. > >=20 > > this is a very common mistake i have seen very very often=20 > in shared storage environments - take a look at the vmware=20 > forum - there are tons of people who wonder about getting=20 > "strange effects" because they are using a physical device on=20 > the host and inside a VM at the same time. > >=20 > > btw - those "strange effects" means: you are corrupting=20 > your filesystem, so immediatly unmount and do an fsck. > >=20 > > regards > > roland > >=20 > >=20 > > > -----Urspr=FCngliche Nachricht----- > > > Von: "Lin Shen (lshen)" <ls...@ci...> > > > Gesendet: 22.02.07 22:12:22 > > > An: <aoe...@li...> > > > Betreff: [Aoetools-discuss] Vblade question > >=20 > >=20 > > > Hi, > > >=20 > > > I have two linux boxes A and B with ip addresses=20 > 172.19.140.24 and=20 > > > 172.19.140.30, so I think there are the same LAN, right? > > >=20 > > > On A, I started vblade and also created an ext3 file=20 > system on the=20 > > > same block device: > > >=20 > > > A> vblade 2 0 eth0 /dev/hda8 > > > A> mkfs -t ext3 /dev/hda8 > > > A> mount -t ext3 /dev/hda8 /mnt/ext3 > > >=20 > > > On B, I mounted the same file system: > > >=20 > > > B> mount -t ext3 /dev/etherd/e2.0 /mnt/ext3 > > >=20 > > > But I found out that it takes a long time (a few minutes)=20 > for a file=20 > > > created on A under /mnt/ext3 to appear on B under=20 > /mnt/ext3 and vice=20 > > > versa. Any ideas what I did wrong and/or any suggestions for=20 > > > troubleshooting? > > >=20 > > > Thanks > > > Lin > > >=20 > > >=20 > -------------------------------------------------------------------- > > > ----- Take Surveys. Earn Cash. Influence the Future of IT Join=20 > > > SourceForge.net's Techsay panel and you'll get the chance=20 > to share=20 > > > your opinions on IT & business topics through brief=20 > surveys-and earn=20 > > > cash=20 > > >=20 > = http://www.techsay.com/default.php?page=3Djoin.php&p=3Dsourceforge&CID=3D= D > > > EVDEV _______________________________________________ > > > Aoetools-discuss mailing list > > > Aoe...@li... > > > https://lists.sourceforge.net/lists/listinfo/aoetools-discuss > > >=20 > >=20 > >=20 >=20 >=20 > ______________________________________________________________ > _________ > Viren-Scan f=FCr Ihren PC! Jetzt f=FCr jeden. Sofort, online und=20 > kostenlos. > Gleich testen! http://www.pc-sicherheit.web.de/freescan/?mc=3D022222 >=20 |
From: Lin S. \(lshen\) <ls...@ci...> - 2007-02-22 23:53:19
|
That doesn't explain why I still see the same problem after I switched = to GFS though. Lin=20 > -----Original Message----- > From: de...@we... [mailto:de...@we...]=20 > Sent: Thursday, February 22, 2007 1:33 PM > To: aoe...@li...; Lin Shen (lshen) > Subject: Re: [Aoetools-discuss] Vblade question >=20 > Hi ! >=20 > > Any ideas what I did wrong and/or any suggestions for=20 > troubleshooting? >=20 > yes, you did a very common mistake! > i wonder that you even ever "see" that file. > why? > you simply cannot use ext3 (and any other ordinary filesystem=20 > like ext2,reiser,xfs,jfs,fat,ntfs) as filesystem for shared=20 > storage, i.e. for something you want to mount twice at the=20 > same time. you either need a cluster filesystem like ocfs for=20 > that _or_ need to make sure, that the device is mounted=20 > either on host A _or_ host B. >=20 > this is a very common mistake i have seen very very often in=20 > shared storage environments - take a look at the vmware forum=20 > - there are tons of people who wonder about getting "strange=20 > effects" because they are using a physical device on the host=20 > and inside a VM at the same time. >=20 > btw - those "strange effects" means: you are corrupting your=20 > filesystem, so immediatly unmount and do an fsck. >=20 > regards > roland >=20 >=20 > > -----Urspr=FCngliche Nachricht----- > > Von: "Lin Shen (lshen)" <ls...@ci...> > > Gesendet: 22.02.07 22:12:22 > > An: <aoe...@li...> > > Betreff: [Aoetools-discuss] Vblade question >=20 >=20 > > Hi, > >=20 > > I have two linux boxes A and B with ip addresses 172.19.140.24 and=20 > > 172.19.140.30, so I think there are the same LAN, right? > >=20 > > On A, I started vblade and also created an ext3 file system on the=20 > > same block device: > >=20 > > A> vblade 2 0 eth0 /dev/hda8 > > A> mkfs -t ext3 /dev/hda8 > > A> mount -t ext3 /dev/hda8 /mnt/ext3 > >=20 > > On B, I mounted the same file system: > >=20 > > B> mount -t ext3 /dev/etherd/e2.0 /mnt/ext3 > >=20 > > But I found out that it takes a long time (a few minutes)=20 > for a file=20 > > created on A under /mnt/ext3 to appear on B under /mnt/ext3=20 > and vice=20 > > versa. Any ideas what I did wrong and/or any suggestions for=20 > > troubleshooting? > >=20 > > Thanks > > Lin > >=20 > >=20 > ---------------------------------------------------------------------- > > --- Take Surveys. Earn Cash. Influence the Future of IT Join=20 > > SourceForge.net's Techsay panel and you'll get the chance to share=20 > > your opinions on IT & business topics through brief=20 > surveys-and earn=20 > > cash=20 > >=20 > = http://www.techsay.com/default.php?page=3Djoin.php&p=3Dsourceforge&CID=3D= DEV > > DEV _______________________________________________ > > Aoetools-discuss mailing list > > Aoe...@li... > > https://lists.sourceforge.net/lists/listinfo/aoetools-discuss > >=20 >=20 >=20 > ______________________________________________________________ > ___________ > In 5 Schritten zur eigenen Homepage. Jetzt Domain sichern und=20 > gestalten!=20 > Nur 3,99 EUR/Monat! http://www.maildomain.web.de/?mc=3D021114 >=20 |
From: Lin S. \(lshen\) <ls...@ci...> - 2007-02-22 23:53:23
|
BTW, it worked fine when using GNBD under GFS. Lin > -----Original Message----- > From: de...@we... [mailto:de...@we...]=20 > Sent: Thursday, February 22, 2007 1:33 PM > To: aoe...@li...; Lin Shen (lshen) > Subject: Re: [Aoetools-discuss] Vblade question >=20 > Hi ! >=20 > > Any ideas what I did wrong and/or any suggestions for=20 > troubleshooting? >=20 > yes, you did a very common mistake! > i wonder that you even ever "see" that file. > why? > you simply cannot use ext3 (and any other ordinary filesystem=20 > like ext2,reiser,xfs,jfs,fat,ntfs) as filesystem for shared=20 > storage, i.e. for something you want to mount twice at the=20 > same time. you either need a cluster filesystem like ocfs for=20 > that _or_ need to make sure, that the device is mounted=20 > either on host A _or_ host B. >=20 > this is a very common mistake i have seen very very often in=20 > shared storage environments - take a look at the vmware forum=20 > - there are tons of people who wonder about getting "strange=20 > effects" because they are using a physical device on the host=20 > and inside a VM at the same time. >=20 > btw - those "strange effects" means: you are corrupting your=20 > filesystem, so immediatly unmount and do an fsck. >=20 > regards > roland >=20 >=20 > > -----Urspr=FCngliche Nachricht----- > > Von: "Lin Shen (lshen)" <ls...@ci...> > > Gesendet: 22.02.07 22:12:22 > > An: <aoe...@li...> > > Betreff: [Aoetools-discuss] Vblade question >=20 >=20 > > Hi, > >=20 > > I have two linux boxes A and B with ip addresses 172.19.140.24 and=20 > > 172.19.140.30, so I think there are the same LAN, right? > >=20 > > On A, I started vblade and also created an ext3 file system on the=20 > > same block device: > >=20 > > A> vblade 2 0 eth0 /dev/hda8 > > A> mkfs -t ext3 /dev/hda8 > > A> mount -t ext3 /dev/hda8 /mnt/ext3 > >=20 > > On B, I mounted the same file system: > >=20 > > B> mount -t ext3 /dev/etherd/e2.0 /mnt/ext3 > >=20 > > But I found out that it takes a long time (a few minutes)=20 > for a file=20 > > created on A under /mnt/ext3 to appear on B under /mnt/ext3=20 > and vice=20 > > versa. Any ideas what I did wrong and/or any suggestions for=20 > > troubleshooting? > >=20 > > Thanks > > Lin > >=20 > >=20 > ---------------------------------------------------------------------- > > --- Take Surveys. Earn Cash. Influence the Future of IT Join=20 > > SourceForge.net's Techsay panel and you'll get the chance to share=20 > > your opinions on IT & business topics through brief=20 > surveys-and earn=20 > > cash=20 > >=20 > = http://www.techsay.com/default.php?page=3Djoin.php&p=3Dsourceforge&CID=3D= DEV > > DEV _______________________________________________ > > Aoetools-discuss mailing list > > Aoe...@li... > > https://lists.sourceforge.net/lists/listinfo/aoetools-discuss > >=20 >=20 >=20 > ______________________________________________________________ > ___________ > In 5 Schritten zur eigenen Homepage. Jetzt Domain sichern und=20 > gestalten!=20 > Nur 3,99 EUR/Monat! http://www.maildomain.web.de/?mc=3D021114 >=20 |