On 5/21/10, redhat-list-request@xxxxxxxxxx <redhat-list-request@xxxxxxxxxx> wrote: > Send redhat-list mailing list submissions to > redhat-list@xxxxxxxxxx > > To subscribe or unsubscribe via the World Wide Web, visit > https://www.redhat.com/mailman/listinfo/redhat-list > or, via email, send a message with subject or body 'help' to > redhat-list-request@xxxxxxxxxx > > You can reach the person managing the list at > redhat-list-owner@xxxxxxxxxx > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of redhat-list digest..." > > > Today's Topics: > > 1. Re: Multipath I/O stats (Yong Huang) > 2. RE: Multipath I/O stats (Allen, Jack) > 3. RHEL VPS hosting service (Greg Cornell) > 4. Re: RHEL VPS hosting service (Adam Miller) > 5. RE: RHEL VPS hosting service (Greg Cornell) > 6. Re: RHEL VPS hosting service (Barry Brimer) > 7. RE: RHEL VPS hosting service (Greg Cornell) > 8. Re: RHEL VPS hosting service (Paul Whitney) > 9. RE: RHEL VPS hosting service (Greg Cornell) > 10. Re: RHEL VPS hosting service (MadTh) > 11. RE: RHEL VPS hosting service (Greg Cornell) > 12. Re: RHEL VPS hosting service (mark) > 13. Re: RHEL VPS hosting service (Adam Miller) > 14. Re: RHEL VPS hosting service (Adam Miller) > 15. Re: RHEL VPS hosting service (Tom H) > 16. Re: RHEL VPS hosting service (Kenneth Kirchner) > 17. RE: Multipath I/O stats (Yong Huang) > 18. Re: RHEL VPS hosting service (Adam Miller) > 19. Re: RHEL VPS hosting service (Kenneth Kirchner) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Thu, 20 May 2010 11:28:26 -0700 (PDT) > From: Yong Huang <yong321@xxxxxxxxx> > To: Jack.Allen@xxxxxxxxxxxx > Cc: redhat-list@xxxxxxxxxx > Subject: Re: Multipath I/O stats > Message-ID: <409454.20542.qm@xxxxxxxxxxxxxxxxxxxxxxxxxxx> > Content-Type: text/plain; charset=us-ascii > >> With multipath set up to access a SAN with some number of LUNs >> and for this question 2 paths set for round robin, how can the >> I/O stats be seen/gathered to see the throughput on each path >> and how balanced the I/O is? > > I think we can do this. multiptha -l tells you what disks are combined to > form a mapper path. Then you can use iostat to check I/O stats of each disk > along with each mapper. It won't be hard to write a shell script to re-print > the lines of iostat nicely, grouping the lines of the disks under their > respective mapper path. > > Yong Huang > > > > > > > ------------------------------ > > Message: 2 > Date: Thu, 20 May 2010 16:33:45 -0400 > From: "Allen, Jack" <Jack.Allen@xxxxxxxxxxxx> > To: Yong Huang <yong321@xxxxxxxxx> > Cc: redhat-list@xxxxxxxxxx > Subject: RE: Multipath I/O stats > Message-ID: > <230ED15F81AFD3409345FFA4E565F0E50A5701BE@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx> > > Content-Type: text/plain; charset="us-ascii" > > > > -----Original Message----- > From: Yong Huang [mailto:yong321@xxxxxxxxx] > Sent: Thursday, May 20, 2010 2:28 PM > To: Allen, Jack > Cc: redhat-list@xxxxxxxxxx > Subject: Re: Multipath I/O stats > >> With multipath set up to access a SAN with some number of LUNs >> and for this question 2 paths set for round robin, how can the >> I/O stats be seen/gathered to see the throughput on each path >> and how balanced the I/O is? > > I think we can do this. multiptha -l tells you what disks are combined > to form a mapper path. Then you can use iostat to check I/O stats of > each disk along with each mapper. It won't be hard to write a shell > script to re-print the lines of iostat nicely, grouping the lines of the > disks under their respective mapper path. > > Yong Huang > > =========================== > Thanks for the reply. > > This is the output of just one of the mpaths that I monitored for a > while. > > mpath13 (360060e8005491000000049100000703c) dm-0 HP,OPEN-V > [size=10G][features=1 queue_if_no_path][hwhandler=0][rw] > \_ round-robin 0 [prio=0][active] > \_ 2:0:0:2 sdaa 65:160 [active][undef] > \_ 2:0:1:2 sdam 66:96 [active][undef] > \_ 1:0:0:2 sdc 8:32 [active][undef] > \_ 1:0:1:2 sdo 8:224 [active][undef] > > > Below is the command I used and the results. I know this is a small > sampling and I have eliminated the ones that had 0 I/O to save space > here. But it appears the I/O is not really being done round-robin as I > think it should be. You will notice sdam and sdb are the only ones that > do any I/O. Now maybe this is because of some preferred path and > controller relationship, I don't know. Any help understanding this would > be helpful. > > iostat -d -p sdaa -p sdam -p sdc -p sdb -p dm-0 2 20 > /tmp/zzxx > > Linux 2.6.18-164.el5PAE (h0009) 05/20/2010 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sdaa 1.53 49.43 15.03 60932848 18523880 > sdam 1.53 49.35 15.10 60833016 18616608 > sdc 1.53 49.41 15.04 60905568 18542936 > sdb 1.38 57.21 3.68 70522704 4533144 > dm-0 32.23 197.56 60.24 243542080 74259264 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sdaa 0.00 0.00 0.00 0 0 > sdam 4.50 72.00 0.00 144 0 > sdc 0.00 0.00 0.00 0 0 > sdb 4.50 72.00 0.00 144 0 > dm-0 9.00 72.00 0.00 144 0 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sdaa 0.00 0.00 0.00 0 0 > sdam 10.00 160.00 0.00 320 0 > sdc 0.00 0.00 0.00 0 0 > sdb 7.50 112.00 8.00 224 16 > dm-0 20.00 160.00 0.00 320 0 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sdaa 0.00 0.00 0.00 0 0 > sdam 7.00 112.00 0.00 224 0 > sdc 0.00 0.00 0.00 0 0 > sdb 5.00 80.00 0.00 160 0 > dm-0 14.00 112.00 0.00 224 0 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sdaa 0.00 0.00 0.00 0 0 > sdam 3.50 56.00 0.00 112 0 > sdc 0.00 0.00 0.00 0 0 > sdb 3.50 56.00 0.00 112 0 > dm-0 7.00 56.00 0.00 112 0 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sdaa 0.00 0.00 0.00 0 0 > sdam 0.50 0.00 7.96 0 16 > sdc 0.00 0.00 0.00 0 0 > sdb 0.00 0.00 0.00 0 0 > dm-0 1.00 0.00 7.96 0 16 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sdaa 0.00 0.00 0.00 0 0 > sdam 3.50 32.00 96.00 64 192 > sdc 0.00 0.00 0.00 0 0 > sdb 0.00 0.00 0.00 0 0 > dm-0 16.00 32.00 96.00 64 192 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sdaa 0.00 0.00 0.00 0 0 > sdam 0.50 0.00 8.00 0 16 > sdc 0.00 0.00 0.00 0 0 > sdb 0.00 0.00 0.00 0 0 > dm-0 1.00 0.00 8.00 0 16 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sdaa 0.00 0.00 0.00 0 0 > sdam 1.50 0.00 24.00 0 48 > sdc 0.00 0.00 0.00 0 0 > sdb 0.00 0.00 0.00 0 0 > dm-0 3.00 0.00 24.00 0 48 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sdaa 0.00 0.00 0.00 0 0 > sdam 5.00 24.00 88.00 48 176 > sdc 0.00 0.00 0.00 0 0 > sdb 0.00 0.00 0.00 0 0 > dm-0 14.00 24.00 88.00 48 176 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sdaa 0.00 0.00 0.00 0 0 > sdam 0.50 8.00 0.00 16 0 > sdc 0.00 0.00 0.00 0 0 > sdb 0.00 0.00 0.00 0 0 > dm-0 1.00 8.00 0.00 16 0 > > Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn > sdaa 0.00 0.00 0.00 0 0 > sdam 7.50 0.00 120.00 0 240 > sdc 0.00 0.00 0.00 0 0 > sdb 0.00 0.00 0.00 0 0 > dm-0 15.00 0.00 120.00 0 240 > > ----- > Jack Allen > > > > ------------------------------ > > Message: 3 > Date: Thu, 20 May 2010 14:49:56 -0700 > From: Greg Cornell <Greg.Cornell@xxxxxxxxxxxxxx> > To: "redhat-list@xxxxxxxxxx" <redhat-list@xxxxxxxxxx> > Subject: RHEL VPS hosting service > Message-ID: > <1C41A84ADCED6E439EB3E7EDBCD3DF711C9E3314B7@xxxxxxxxxxxxxxxxxx> > Content-Type: text/plain; charset="us-ascii" > > Hello List, > > I'm looking into implementing an off-site server. If anyone has > recommendations for a hosting services that provides RHEL in a VPS please > let me know. > > Thanks for your time, > Greg > > -- > Greg Cornell, Unix Sys Admin > Walla Walla University > > > > ------------------------------ > > Message: 4 > Date: Thu, 20 May 2010 16:55:32 -0500 > From: Adam Miller <maxamillion@xxxxxxxxxxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: Re: RHEL VPS hosting service > Message-ID: > <AANLkTinbT-PW8mbujrWFAcDvqkJu8YzmRKkvYJYuC0Qg@xxxxxxxxxxxxxx> > Content-Type: text/plain; charset=ISO-8859-1 > > I've been looking for the same for some time, the closest I have found > is VPS providers that offer CentOS. I'm currently a customer of > linode.com and I've been very happy with their level of service as > well as their pricing but you're going to be running CentOS and not > official RHEL. > > -AdamM > > -- > http://maxamillion.googlepages.com > --------------------------------------------------------- > () ascii ribbon campaign - against html e-mail > /\ www.asciiribbon.org - against proprietary attachments > > > > ------------------------------ > > Message: 5 > Date: Thu, 20 May 2010 15:01:23 -0700 > From: Greg Cornell <Greg.Cornell@xxxxxxxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: RE: RHEL VPS hosting service > Message-ID: > <1C41A84ADCED6E439EB3E7EDBCD3DF711C9E3314C7@xxxxxxxxxxxxxxxxxx> > Content-Type: text/plain; charset="us-ascii" > > Hi Adam, > > Thanks, that's exactly what I've been running into, several that offer > CentOS but no RHEL. I'm really hoping to find a RHEL solution. > > Greg > >> -----Original Message----- >> From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list- >> bounces@xxxxxxxxxx] On Behalf Of Adam Miller >> Sent: Thursday, May 20, 2010 2:56 PM >> To: General Red Hat Linux discussion list >> Subject: Re: RHEL VPS hosting service >> >> I've been looking for the same for some time, the closest I have found is >> VPS >> providers that offer CentOS. I'm currently a customer of linode.com and >> I've >> been very happy with their level of service as well as their pricing but >> you're >> going to be running CentOS and not official RHEL. >> >> -AdamM >> >> -- >> http://maxamillion.googlepages.com >> --------------------------------------------------------- >> () ascii ribbon campaign - against html e-mail >> /\ www.asciiribbon.org - against proprietary attachments >> >> -- >> redhat-list mailing list >> unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe >> https://www.redhat.com/mailman/listinfo/redhat-list > > > > ------------------------------ > > Message: 6 > Date: Thu, 20 May 2010 17:03:08 -0500 > From: Barry Brimer <lists@xxxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: Re: RHEL VPS hosting service > Message-ID: <1274392988.4bf5b19ca31a6@xxxxxxxxxxxxxxxxxxx> > Content-Type: text/plain; charset=ISO-8859-1 > > Quoting Adam Miller <maxamillion@xxxxxxxxxxxxxxxxx>: > >> I've been looking for the same for some time, the closest I have found >> is VPS providers that offer CentOS. I'm currently a customer of >> linode.com and I've been very happy with their level of service as >> well as their pricing but you're going to be running CentOS and not >> official RHEL. >> > I've had a few CentOS-based Linodes since 2004. Linode is great. Highly > recommended. > > Barry > > > > ------------------------------ > > Message: 7 > Date: Thu, 20 May 2010 15:08:07 -0700 > From: Greg Cornell <Greg.Cornell@xxxxxxxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: RE: RHEL VPS hosting service > Message-ID: > <1C41A84ADCED6E439EB3E7EDBCD3DF711C9E3314CF@xxxxxxxxxxxxxxxxxx> > Content-Type: text/plain; charset="us-ascii" > > Hi Barry, > >> > >> I've had a few CentOS-based Linodes since 2004. Linode is great. Highly >> recommended. >> > I'll keep them in mind in case I can't find a RHEL solution. > > Thanks, > Greg > > > > ------------------------------ > > Message: 8 > Date: Thu, 20 May 2010 18:15:31 -0400 > From: Paul Whitney <paul.whitney@xxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: Re: RHEL VPS hosting service > Message-ID: <E651E695-8B4B-40D1-8F69-41DF1C0713E6@xxxxxx> > Content-Type: text/plain; charset=us-ascii; format=flowed; delsp=yes > > With a RHEL solution it will prob cost more. Afterall updates for RHEL > are not free. Whereas CentOS which is virtually identical is free. > > Paul M. Whitney, VCP > Sr. Systems Engineer > Worldwide Information Network Systems > email: whitneyp@xxxxxxxxxxxxxxxx > cell: 410.493.9448 > Pager: 1051178@xxxxxxxxxx > > On May 20, 2010, at 18:01, Greg Cornell <Greg.Cornell@xxxxxxxxxxxxxx> > wrote: > >> Hi Adam, >> >> Thanks, that's exactly what I've been running into, several that >> offer CentOS but no RHEL. I'm really hoping to find a RHEL solution. >> >> Greg >> >>> -----Original Message----- >>> From: redhat-list-bounces@xxxxxxxxxx [mailto:redhat-list- >>> bounces@xxxxxxxxxx] On Behalf Of Adam Miller >>> Sent: Thursday, May 20, 2010 2:56 PM >>> To: General Red Hat Linux discussion list >>> Subject: Re: RHEL VPS hosting service >>> >>> I've been looking for the same for some time, the closest I have >>> found is VPS >>> providers that offer CentOS. I'm currently a customer of linode.com >>> and I've >>> been very happy with their level of service as well as their >>> pricing but you're >>> going to be running CentOS and not official RHEL. >>> >>> -AdamM >>> >>> -- >>> http://maxamillion.googlepages.com >>> --------------------------------------------------------- >>> () ascii ribbon campaign - against html e-mail >>> /\ www.asciiribbon.org - against proprietary attachments >>> >>> -- >>> redhat-list mailing list >>> unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe >>> https://www.redhat.com/mailman/listinfo/redhat-list >> >> -- >> redhat-list mailing list >> unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe >> https://www.redhat.com/mailman/listinfo/redhat-list > > > > ------------------------------ > > Message: 9 > Date: Thu, 20 May 2010 15:23:07 -0700 > From: Greg Cornell <Greg.Cornell@xxxxxxxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: RE: RHEL VPS hosting service > Message-ID: > <1C41A84ADCED6E439EB3E7EDBCD3DF711C9E3314DA@xxxxxxxxxxxxxxxxxx> > Content-Type: text/plain; charset="us-ascii" > > Hi Paul, > >> With a RHEL solution it will prob cost more. Afterall updates for RHEL are >> not >> free. Whereas CentOS which is virtually identical is free. >> > I was hoping to use one of our existing RHEL licenses for updates. Maybe > that's not possible with a hosted server. > > Greg > > > > ------------------------------ > > Message: 10 > Date: Fri, 21 May 2010 00:53:00 +0200 > From: MadTh <madan.feedback@xxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: Re: RHEL VPS hosting service > Message-ID: > <AANLkTinsJQOFJS8Hpnt7yevxhVbsMhv5RWf0E9ISqLep@xxxxxxxxxxxxxx> > Content-Type: text/plain; charset=ISO-8859-1 > > Greg, > > > > what is your system requirements and what pricing range are you looking for. > > > > > > On Fri, May 21, 2010 at 12:23 AM, Greg Cornell > <Greg.Cornell@xxxxxxxxxxxxxx>wrote: > >> Hi Paul, >> >> > With a RHEL solution it will prob cost more. Afterall updates for RHEL >> are not >> > free. Whereas CentOS which is virtually identical is free. >> > >> I was hoping to use one of our existing RHEL licenses for updates. Maybe >> that's not possible with a hosted server. >> >> Greg >> >> -- >> redhat-list mailing list >> unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe >> https://www.redhat.com/mailman/listinfo/redhat-list >> > > > ------------------------------ > > Message: 11 > Date: Thu, 20 May 2010 16:03:06 -0700 > From: Greg Cornell <Greg.Cornell@xxxxxxxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: RE: RHEL VPS hosting service > Message-ID: > <1C41A84ADCED6E439EB3E7EDBCD3DF711C9E3314E8@xxxxxxxxxxxxxxxxxx> > Content-Type: text/plain; charset="us-ascii" > >> what is your system requirements and what pricing range are you looking >> for. >> > Very low, the system we're replacing is a 1.4Ghz Pentium, 512MB RAM, 16GB > hard drive. We haven't set a price range yet, but in looking at a few > services I'm thinking somewhere in the $50-$100 range. > > Greg > > > > ------------------------------ > > Message: 12 > Date: Thu, 20 May 2010 19:27:58 -0400 > From: mark <m.roth@xxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: Re: RHEL VPS hosting service > Message-ID: <4BF5C57E.4090401@xxxxxxxxx> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Greg Cornell wrote: >> Hi Barry, >> >>> I've had a few CentOS-based Linodes since 2004. Linode is great. Highly >>> recommended. >>> >> I'll keep them in mind in case I can't find a RHEL solution. > > May I ask why not CentOS? I mean, you *do* know that it's RH with the serial > numbers (that is, proprietary packages) filed off? > > mark > -- > "Mr. Chairman, vows of chastity break far more easily than condoms do." > > > > ------------------------------ > > Message: 13 > Date: Thu, 20 May 2010 21:12:37 -0500 > From: Adam Miller <maxamillion@xxxxxxxxxxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: Re: RHEL VPS hosting service > Message-ID: > <AANLkTilgVhkwKd8JyMrPglAQk-y5uIhdQdlfQ4NRKHTx@xxxxxxxxxxxxxx> > Content-Type: text/plain; charset=ISO-8859-1 > > No > > -AdamM (from Android ) > > On May 20, 2010 6:30 PM, "mark" <m.roth@xxxxxxxxx> wrote: > > Greg Cornell wrote: >> >> Hi Barry, >> >>> I've had a few CentOS-based Linodes since 2004. Linode is gr... > May I ask why not CentOS? I mean, you *do* know that it's RH with the serial > numbers (that is, proprietary packages) filed off? > > mark > -- > "Mr. Chairman, vows of chastity break far more easily than condoms do." > > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe... > > > ------------------------------ > > Message: 14 > Date: Thu, 20 May 2010 21:15:46 -0500 > From: Adam Miller <maxamillion@xxxxxxxxxxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: Re: RHEL VPS hosting service > Message-ID: > <AANLkTimmO9B4FAZT9prnAdU5ZvLC09CdDuT78JULj4TY@xxxxxxxxxxxxxx> > Content-Type: text/plain; charset=ISO-8859-1 > > No it's not. CentOS is RHEL minus logos and trademark material and is > community supported instead of commercially. Nothing shipped in RHEL is > proprietary. Please don't spread incorrect information like that. Thanks. > > -AdamM (from Android ) > > On May 20, 2010 6:30 PM, "mark" <m.roth@xxxxxxxxx> wrote: > > Greg Cornell wrote: >> >> Hi Barry, >> >>> I've had a few CentOS-based Linodes since 2004. Linode is gr... > May I ask why not CentOS? I mean, you *do* know that it's RH with the serial > numbers (that is, proprietary packages) filed off? > > mark > -- > "Mr. Chairman, vows of chastity break far more easily than condoms do." > > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe... > > > ------------------------------ > > Message: 15 > Date: Thu, 20 May 2010 22:24:52 -0400 > From: Tom H <tomh0665@xxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: Re: RHEL VPS hosting service > Message-ID: > <AANLkTimdGSSClFpCaxz7MWWND6PK37tD-eM9wWQ2mOA_@xxxxxxxxxxxxxx> > Content-Type: text/plain; charset=ISO-8859-1 > > On Thu, May 20, 2010 at 5:49 PM, Greg Cornell > <Greg.Cornell@xxxxxxxxxxxxxx> wrote: >> >> I'm looking into implementing an off-site server. ?If anyone has >> recommendations for a hosting services that provides RHEL in a VPS please >> let me know. > > Slicehost lists RHEL as an option > http://www.slicehost.com/questions/ > > > > ------------------------------ > > Message: 16 > Date: Thu, 20 May 2010 20:46:55 -0700 > From: Kenneth Kirchner <ken@xxxxxxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: Re: RHEL VPS hosting service > Message-ID: <F78E6504-C69C-411E-9EC4-157B42975E38@xxxxxxxxxxxxx> > Content-Type: text/plain; charset=us-ascii > > If CentOS becomes an option: > > http://www.emcwebhosting.com/ > > I dont use them anymore (no more projects), but when I did they had great > connectivity and were pretty inexpensive. > > -Ken > > On May 20, 2010, at 7:24 PM, Tom H wrote: > >> On Thu, May 20, 2010 at 5:49 PM, Greg Cornell >> <Greg.Cornell@xxxxxxxxxxxxxx> wrote: >>> >>> I'm looking into implementing an off-site server. If anyone has >>> recommendations for a hosting services that provides RHEL in a VPS please >>> let me know. >> >> Slicehost lists RHEL as an option >> http://www.slicehost.com/questions/ >> >> -- >> redhat-list mailing list >> unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe >> https://www.redhat.com/mailman/listinfo/redhat-list > > > > > ------------------------------ > > Message: 17 > Date: Thu, 20 May 2010 21:19:00 -0700 (PDT) > From: Yong Huang <yong321@xxxxxxxxx> > To: JackAllen <Jack.Allen@xxxxxxxxxxxx> > Cc: redhat-list@xxxxxxxxxx > Subject: RE: Multipath I/O stats > Message-ID: <853937.26441.qm@xxxxxxxxxxxxxxxxxxxxxxxxxxx> > Content-Type: text/plain; charset=us-ascii > >> > With multipath set up to access a SAN with some number of LUNs >> > and for this question 2 paths set for round robin, how can the >> > I/O stats be seen/gathered to see the throughput on each path >> > and how balanced the I/O is? >> >> I think we can do this. multiptha -l tells you what disks are combined >> to form a mapper path. Then you can use iostat to check I/O stats of >> each disk along with each mapper. It won't be hard to write a shell >> script to re-print the lines of iostat nicely, grouping the lines of the >> disks under their respective mapper path. >> >> Yong Huang >> >> =========================== >> Thanks for the reply. >> >> This is the output of just one of the mpaths that I monitored for a >> while. >> >> mpath13 (360060e8005491000000049100000703c) dm-0 HP,OPEN-V >> [size=10G][features=1 queue_if_no_path][hwhandler=0][rw] >> \_ round-robin 0 [prio=0][active] >> \_ 2:0:0:2 sdaa 65:160 [active][undef] >> \_ 2:0:1:2 sdam 66:96 [active][undef] >> \_ 1:0:0:2 sdc 8:32 [active][undef] >> \_ 1:0:1:2 sdo 8:224 [active][undef] >> >> >> Below is the command I used and the results. I know this is a small >> sampling and I have eliminated the ones that had 0 I/O to save space >> here. But it appears the I/O is not really being done round-robin as I >> think it should be. You will notice sdam and sdb are the only ones that >> do any I/O. Now maybe this is because of some preferred path and >> controller relationship, I don't know. Any help understanding this would >> be helpful. >> >> iostat -d -p sdaa -p sdam -p sdc -p sdb -p dm-0 2 20 > /tmp/zzxx >> >> Linux 2.6.18-164.el5PAE (h0009) 05/20/2010 >> >> Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn >> sdaa 1.53 49.43 15.03 60932848 18523880 >> sdam 1.53 49.35 15.10 60833016 18616608 >> sdc 1.53 49.41 15.04 60905568 18542936 >> sdb 1.38 57.21 3.68 70522704 4533144 >> dm-0 32.23 197.56 60.24 243542080 74259264 >> >> Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn >> sdaa 0.00 0.00 0.00 0 0 >> sdam 4.50 72.00 0.00 144 0 >> sdc 0.00 0.00 0.00 0 0 >> sdb 4.50 72.00 0.00 144 0 >> dm-0 9.00 72.00 0.00 144 0 >> >> ... > > Jack, > > You can look at the first iteration of your iostat output, which is the > accumulative stats since bootup (the later iterations are each a 2-second > sample). If your iostat had argument -p sdo instead of -p sdb (it must be a > typo compared with the outpuf of your multipath command), you would see all > four paths have almost perfectly equal I/O stats, because all your paths are > active. Numbers below this accumulative stats indicate your currently > selected paths are sdam and (likely) sdo (not shown due to typo). After > rr_min_io seconds I think, they'll switch to the other two paths. > > Your multipath command seems to have the 4 path lines missing leading space; > they should be indented below the priority group line. > > Is it OK you show me the first part of /etc/multipath.conf, uncommented > lines before the actual multipaths section? > > BTW, I used a wrong word in my last message. Instead of "disk", I really > should say "device". > > Yong Huang > > > > > > > ------------------------------ > > Message: 18 > Date: Fri, 21 May 2010 00:56:57 -0500 > From: Adam Miller <maxamillion@xxxxxxxxxxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: Re: RHEL VPS hosting service > Message-ID: > <AANLkTikMTCQ0VLI7TZYFPTuR1RpNYEj3SYcaurCqjQ1a@xxxxxxxxxxxxxx> > Content-Type: text/plain; charset=ISO-8859-1 > > Not only does slicehost have RHEL but they also offer an android application > to admin your slices on the run. Looks like I will be converting. Good find! > > -AdamM (from Android ) > > On May 20, 2010 9:55 PM, "Tom H" <tomh0665@xxxxxxxxx> wrote: > > On Thu, May 20, 2010 at 5:49 PM, Greg Cornell > > <Greg.Cornell@xxxxxxxxxxxxxx> wrote: >> > >> I'm looking into implementing an off-site server. If anyone has > recommendations for a hosting ser... > Slicehost lists RHEL as an option > http://www.slicehost.com/questions/ > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > ... > > > ------------------------------ > > Message: 19 > Date: Thu, 20 May 2010 23:11:26 -0700 > From: Kenneth Kirchner <ken@xxxxxxxxxxxxx> > To: General Red Hat Linux discussion list <redhat-list@xxxxxxxxxx> > Subject: Re: RHEL VPS hosting service > Message-ID: <5C0DCDA2-6E46-46AB-B8B2-A6A40AA49BFE@xxxxxxxxxxxxx> > Content-Type: text/plain; charset=us-ascii > > Any hosting service (like the EMC one I posted earlier) that uses Plesk (by > Parallels) might be able to use the ServerAdmin app for iPhone, if you don't > roll with Android. > > http://mediabunker.com/iphone/serveradmin/ > > -Ken > > On May 20, 2010, at 10:56 PM, Adam Miller wrote: > >> Not only does slicehost have RHEL but they also offer an android >> application >> to admin your slices on the run. Looks like I will be converting. Good >> find! >> >> -AdamM (from Android ) >> >> On May 20, 2010 9:55 PM, "Tom H" <tomh0665@xxxxxxxxx> wrote: >> >> On Thu, May 20, 2010 at 5:49 PM, Greg Cornell >> >> <Greg.Cornell@xxxxxxxxxxxxxx> wrote: >>> >> >>> I'm looking into implementing an off-site server. If anyone has >> recommendations for a hosting ser... >> Slicehost lists RHEL as an option >> http://www.slicehost.com/questions/ >> >> >> -- >> redhat-list mailing list >> unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe >> ... >> -- >> redhat-list mailing list >> unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe >> https://www.redhat.com/mailman/listinfo/redhat-list > > > > > ------------------------------ > > __ > redhat-list mailing list > Unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > > End of redhat-list Digest, Vol 75, Issue 17 > ******************************************* > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
