Re: [CentOS] IBM ServeRAID M5014 and CentOS 5.5
http://www.redbooks.ibm.com/technotes/tips0738.pdf clearly states Support for RHEL 4 as well as 5, so you should have no problem with CentOS 5.5. regards Jens Neu Peter Hinse Sent by: centos-boun...@centos.org 06/15/2010 01:46 PM Please respond to CentOS mailing list To CentOS mailing list cc Subject [CentOS] IBM ServeRAID M5014 and CentOS 5.5 Hi all, we are about to buy some IBM x3550 M2 servers with ServeRAID M5014 SAS onboard controller. Can anyone confirm that these controllers will work with CentOS 5.5 (seems to be some rebranded LSI controller). I cannot find any hint in the 2.6.18-194.3.1.el5 sources... Regards, Peter ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos signature.asc Description: Binary data ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Running yum shows errors
Hi,
Did you try to disable the mirror selection and specify one single repo?
-Jens
- Originalnachricht -
Von: Jatin Davey [jasho...@cisco.com]
Gesendet: 14.07.2010 11:03 ZE5B
An: centos@centos.org
Betreff: [CentOS] Running yum shows errors
Hi
I am getting the following errors when i try to use yum to install the
net-snmp paclages.
[r...@sc1 yum.repos.d]# yum install net-snmp
Loaded plugins: fastestmirror
Determining fastest mirrors
Traceback (most recent call last):
File "/usr/bin/yum", line 29, in ?
yummain.user_main(sys.argv[1:], exit_code=True)
File "/usr/share/yum-cli/yummain.py", line 229, in user_main
errcode = main(args)
File "/usr/share/yum-cli/yummain.py", line 104, in main
result, resultmsgs = base.doCommands()
File "/usr/share/yum-cli/cli.py", line 339, in doCommands
self._getTs(needTsRemove)
File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 101, in
_getTs
self._getTsInfo(remove_only)
File "/usr/lib/python2.4/site-packages/yum/depsolve.py", line 112, in
_getTsInfo
pkgSack = self.pkgSack
File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 591, in
pkgSack = property(fget=lambda self: self._getSacks(),
File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 434, in
_getSacks
self.repos.populateSack(which=repos)
File "/usr/lib/python2.4/site-packages/yum/repos.py", line 223, in
populateSack
self.doSetup()
File "/usr/lib/python2.4/site-packages/yum/repos.py", line 71, in doSetup
self.ayum.plugins.run('postreposetup')
File "/usr/lib/python2.4/site-packages/yum/plugins.py", line 176, in run
func(conduitcls(self, self.base, conf, **kwargs))
File "/usr/lib/yum-plugins/fastestmirror.py", line 176, in
postreposetup_hook
if downgrade_ftp and _len_non_ftp(repo.urls) == 1:
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 585, in
urls = property(fget=lambda self: self._geturls(),
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 582, in
_geturls
self._baseurlSetup()
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 538, in
_baseurlSetup
mirrorurls.extend(self._getMirrorList())
File "/usr/lib/python2.4/site-packages/yum/yumRepo.py", line 1349, in
_getMirrorList
fo = urlgrabber.grabber.urlopen(url, proxies=self.proxy_dict)
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line
612, in urlopen
return default_grabber.urlopen(url, **kwargs)
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line
891, in urlopen
return self._retry(opts, retryfunc, url)
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line
852, in _retry
r = apply(func, (opts,) + args, {})
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line
890, in retryfunc
return URLGrabberFileObject(url, filename=None, opts=opts)
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line
1008, in __init__
self._do_open()
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line
1091, in _do_open
fo, hdr = self._make_request(req, opener)
File "/usr/lib/python2.4/site-packages/urlgrabber/grabber.py", line
1204, in _make_request
fo = opener.open(req)
File "/usr/lib/python2.4/urllib2.py", line 358, in open
response = self._open(req, data)
File "/usr/lib/python2.4/urllib2.py", line 376, in _open
'_open', req)
File "/usr/lib/python2.4/urllib2.py", line 337, in _call_chain
result = func(*args)
File "/usr/lib/python2.4/urllib2.py", line 573, in
lambda r, proxy=url, type=type, meth=self.proxy_open: \
File "/usr/lib/python2.4/urllib2.py", line 580, in proxy_open
if '@' in host:
TypeError: iterable argument required
Please let me know what needs to be done.
Thanks
Jatin
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[CentOS] GPT Partitions >2.2T with Centos 5.5
Dear all, unfortunately I observe drastic drops in read- performance when I connect LUNs >2.2T to our Centos 5.5 Servers. I suspect issues with the GUID Partition Table, since it happens reproducibly only on the LUNs >2.2T and goes back to normal performance when using a LUN <2T with "normal", Legacy MBR partitions. All machines are CentOS 5.5 (and RHEL 5.5) on IBM Blades LS21/LS41, all LUNs via Brocade 4G FC Switches from a SUN 7310 Unified Storage, EXT3 filesystems with standard settings. Any hints? regards Jens ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] GPT Partitions >2.2T with Centos 5.5
> I think ext3 is a bit slow on so big LUNS, try xfs or similar? there is no official support for xfs in RHEL5, so that is not an option. Besides, I'm talking about a drop of >150mb/s to ~10mb/s read performance when cracking the 2.2T size. This is clearly not in the ext3 (or FS for that matter) magnitude of performance issues. Also, numbers stay the same when dd'ing on the raw device (LUN). -Jens Eero Volotinen Sent by: centos-boun...@centos.org 07/14/2010 11:35 AM Please respond to CentOS mailing list To CentOS mailing list cc Subject Re: [CentOS] GPT Partitions >2.2T with Centos 5.5 http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] GPT Partitions >2.2T with Centos 5.5
> Do you see the slow behaviour (10 MiB/s) for all of the device or only for the > part that is >2T? > > Why use a partition table at all? run dd directly against the device. If this > is slow then you have a controller side problem. very true, back to "Go" :( Peter Kjellstrom Sent by: centos-boun...@centos.org 07/14/2010 01:39 PM Please respond to CentOS mailing list To centos@centos.org cc Subject Re: [CentOS] GPT Partitions >2.2T with Centos 5.5 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Multipathing with Sun 7310
Dear list, we have a relatively new Sun Storage 7310, where we connect CentOS 5.5 Servers (IBM LS21/LS41 Blades) via Brocade Switches, 4GBit FC. The Blades boot from SAN via qla2xxx, and have no harddisks at all. We want them to use multipathing from the very beginning, so /boot and / are already seen by multipathd. Problem is, that the Sun 7310 has two storage heads which run in active/passive mode. BUT the multipathd thinks, they are active/active and therefor shows half the available paths as faulty (multipath -ll below) While this probably gives me the redundancy that is desired, it is a relatively messy situation, since it will be unnecessary hard to detect real path failures and the OS is complaining about "readsector0 checker reports path is down" which gives me >40M/24h /var/log/messages garbage. Any hints for a reasonable configuration? Unfortunately the Sun 7310 is rather new, so almost nothing shows up on google... even less for RHEL/CentOS :-( regards from Berlin Jens [r...@dev-db1 tmp]# multipath -ll sdaa: checker msg is "readsector0 checker reports path is down" sdab: checker msg is "readsector0 checker reports path is down" sdac: checker msg is "readsector0 checker reports path is down" sdad: checker msg is "readsector0 checker reports path is down" sdd: checker msg is "readsector0 checker reports path is down" sdh: checker msg is "readsector0 checker reports path is down" sdl: checker msg is "readsector0 checker reports path is down" sdp: checker msg is "readsector0 checker reports path is down" sdq: checker msg is "readsector0 checker reports path is down" sdr: checker msg is "readsector0 checker reports path is down" sds: checker msg is "readsector0 checker reports path is down" sdt: checker msg is "readsector0 checker reports path is down" sdu: checker msg is "readsector0 checker reports path is down" sdv: checker msg is "readsector0 checker reports path is down" sdx: checker msg is "readsector0 checker reports path is down" sdz: checker msg is "readsector0 checker reports path is down" mpath0 (3600144f0fdf58b5c4bc738070001) dm-0 SUN,Sun Storage 7310 [size=50G][features=0][hwhandler=0][rw] \_ round-robin 0 [prio=1][active] \_ 0:0:1:0 sda 8:0[active][ready] \_ round-robin 0 [prio=1][enabled] \_ 1:0:0:0 sde 8:64 [active][ready] \_ round-robin 0 [prio=1][enabled] \_ 0:0:2:0 sdi 8:128 [active][ready] \_ round-robin 0 [prio=1][enabled] \_ 1:0:1:0 sdm 8:192 [active][ready] \_ round-robin 0 [prio=0][enabled] \_ 0:0:3:0 sdq 65:0 [failed][faulty] \_ round-robin 0 [prio=0][enabled] \_ 1:0:2:0 sdr 65:16 [failed][faulty] \_ round-robin 0 [prio=0][enabled] \_ 0:0:4:0 sdx 65:112 [failed][faulty] \_ round-robin 0 [prio=0][enabled] \_ 1:0:3:0 sdz 65:144 [failed][faulty] ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Multipathing with Sun 7310
Hi Alexander,
thanks for replying, here's my current multipath.conf:
defaults {
user_friendly_names yes
}
blacklist {
devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
devnode "^(hd|xvd|vd)[a-z]*"
wwid "*"
}
blacklist_exceptions {
wwid "3600144f0fdf58b5c4bc738070001"
devices{
device {
vendor "SUN"
product "Sun Storage 7310"
}
}
}
devices {
device {
vendor "SUN"
product "Sun Storage 7310"
path_grouping_policy failover
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
prio_callout "/sbin/mpath_prio_rdac /dev/%n"
features "0"
failback immediate
rr_weight uniform
no_path_retry queue
rr_min_io 1000
}
}
I added "path_grouping_policy failover" because of your message. I also
noticed, you have path_grouping_policy specified twice; is this on
purpose?
Also, when I activate 'hardware_handler "1 rdac"', the box does not boot
any more with some rdac driver error message that I can catch since it
scrolls by fast...
with the above multipath.conf it gets even stranger:
[r...@dev-db1 ~]# multipath -ll
sdd: checker msg is "readsector0 checker reports path is down"
sdh: checker msg is "readsector0 checker reports path is down"
sdi: checker msg is "readsector0 checker reports path is down"
sdj: checker msg is "readsector0 checker reports path is down"
C9 Inquiry of device failed.
C9 Inquiry of device failed.
mpath0 (3600144f0fdf58b5c4bc738070001) dm-0 SUN,Sun Storage 7310
[size=50G][features=1 queue_if_no_path][hwhandler=0][rw]
\_ round-robin 0 [prio=0][active]
\_ 0:0:1:0 sda 8:0 [active][ready]
\_ 1:0:0:0 sde 8:64 [active][ready]
however, the system "lives happily", despite the error messages.
Jens Neu
Health Services Network Administration
Phone: +49 (0) 30 68905-2412
Mail: jens@biotronik.de
"Alexander Dalloz"
Sent by: centos-boun...@centos.org
05/27/2010 04:47 PM
Please respond to
CentOS mailing list
To
"CentOS mailing list"
cc
Subject
Re: [CentOS] Multipathing with Sun 7310
> Dear list,
>
> we have a relatively new Sun Storage 7310, where we connect CentOS 5.5
> Servers (IBM LS21/LS41 Blades) via Brocade Switches, 4GBit FC. The
Blades
> boot from SAN via qla2xxx, and have no harddisks at all. We want them to
> use multipathing from the very beginning, so /boot and / are already
seen
> by multipathd. Problem is, that the Sun 7310 has two storage heads which
> run in active/passive mode. BUT the multipathd thinks, they are
> active/active and therefor shows half the available paths as faulty
> (multipath -ll below)
> While this probably gives me the redundancy that is desired, it is a
> relatively messy situation, since it will be unnecessary hard to detect
> real path failures and the OS is complaining about "readsector0 checker
> reports path is down" which gives me >40M/24h /var/log/messages garbage.
> Any hints for a reasonable configuration? Unfortunately the Sun 7310 is
> rather new, so almost nothing shows up on google... even less for
> RHEL/CentOS :-(
>
> regards from Berlin
> Jens
>
> [r...@dev-db1 tmp]# multipath -ll
> sdaa: checker msg is "readsector0 checker reports path is down"
> sdab: checker msg is "readsector0 checker reports path is down"
> sdac: checker msg is "readsector0 checker reports path is down"
> sdad: checker msg is "readsector0 checker reports path is down"
> sdd: checker msg is "readsector0 checker reports path is down"
> sdh: checker msg is "readsector0 checker reports path is down"
> sdl: checker msg is "readsector0 checker reports path is down"
> sdp: checker msg is "readsector0 checker reports path is down"
> sdq: checker msg is "readsector0 checker reports path is down"
> sdr: checker msg is "readsector0 checker reports path is down"
> sds: checker msg is "readsector0 checker reports path is down"
> sdt: checker msg is "readsector0 checker reports path is down"
> sdu: checker msg is "readsector0 checker reports path is down"
> sdv: checker msg is "readsector0 checker reports path is down"
> sdx: checker msg is "readsector0 checker reports path is down"
> sdz: checker msg is "readsector0 checker reports path is down"
> mpath0 (3600144f0fdf58b5c4bc738070001) dm-0 SUN,Sun Storage 7310
> [size=50G][features=0][hwhandler=0][rw]
&g
Re: [CentOS] Multipathing with Sun 7310
Alexander,
thank you very much, you're the man!
best regards from Berlin
Jens Neu
Health Services Network Administration
"Alexander Dalloz"
Sent by: centos-boun...@centos.org
05/28/2010 04:29 PM
Please respond to
CentOS mailing list
To
"CentOS mailing list"
cc
Subject
Re: [CentOS] Multipathing with Sun 7310
Ah, while coming to an end with this mail and considering to check
upstream (http://christophe.varoqui.free.fr/) whether they know about your
specific storage device, I found the infos you need to configure!
wikis.sun.com/download/attachments/186238602/2010_Q1_ADMIN.pdf
Page 107+108 gives you all required / SUN recommended settings:
device
{
vendor "SUN"
product "Sun Storage 7310"
getuid_callout "/sbin/scsi_id -g -u -s /block/%n"
prio_callout"/sbin/mpath_prio_alua /dev/%n"
hardware_handler"0"
path_grouping_policygroup_by_prio
failbackimmediate
no_path_retry queue
rr_min_io 100
path_checkertur
rr_weight uniform
}
I guess ALUA is enabled by default on the SUN storage 7310, but check it.
> Jens Neu
> Health Services Network Administration
Regards
Alexander
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[CentOS] SUN Storage 7310 with RHEL 5.5 / Centos 5.5 and multipathed root, again.
Dear all,
After some trouble finding the right multipath.conf, I'm running Centos
5.5 against the SUN 7310 more or less successfully now. Unfortunately one
issue remains:
the SUN 7310 has two storage heads, H1 and H2, which are in a
active/passive configuration. If I define a LUN on H1, everything works
great. I edit multipath.conf, re-create the initrd and I find 8 paths with
active/ready and active/ghost:
mpath0 (3600...0001) dm-0 SUN,Sun Storage 7310
[size=50G][features=1 queue_if_no_path][hwhandler=0][rw]
\_ round-robin 0 [prio=200][active]
\_ 0:0:0:0 sda 8:0 [active][ready]
\_ 0:0:1:0 sdd 8:48 [active][ready]
\_ 1:0:0:0 sdg 8:96 [active][ready]
\_ 1:0:1:0 sdj 8:144 [active][ready]
\_ round-robin 0 [prio=4][enabled]
\_ 1:0:2:0 sdm 8:192 [active][ghost]
\_ 0:0:2:0 sdn 8:208 [active][ghost]
\_ 1:0:3:0 sds 65:32 [active][ghost]
\_ 0:0:3:0 sdt 65:48 [active][ghost]
Thing is: as soon as I set up a machine with the LUN(s) on the second
head, all works well until I want to boot with the freshly created
initrd/multipath.conf. System hangs with Kernel Panic, "Creating multipath
devices... no devices found" and "mount: could not find filesystem
'/dev/root'".
Workaround: when I remove the paths to the passive ("ghost paths") Storage
head in the SAN Fabric, the system boots fine and I can re-enable the
paths when the kernel is up. The paths become [active][ghost] as wished
after some time when they show up in the FC Zoning.
This smells like broken mkinitrd to me.
System is very up-to-date, Centos 5.5 Version below:
[r...@dev-db3 ~]# yum list device-mapper-multipath
Installed Packages
device-mapper-multipath.x86_640.4.7-34.el5_5.1installed
[r...@dev-db3 ~]# uname -r
2.6.18-194.3.1.el5
Any suggestions?
best regards from Berlin,
Jens Neu
Health Services Network Administration
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Re: [CentOS] Package Distribution Server?
If you set up a big number of workstations (my pain shreshold woud probably be around 20), or if you have hard requirements that the workstations are really equal in patch level you should maybe consider a Spacewalk server: https://fedorahosted.org/spacewalk/ http://wiki.centos.org/HowTos/PackageManagement/Spacewalk regards Jens Neu Health Services Network Administration Zhihao Lou Sent by: centos-boun...@centos.org 06/04/2010 05:28 AM Please respond to CentOS mailing list To centos@centos.org cc Subject [CentOS] Package Distribution Server? Dear List, I'm trying to set up a lab with multiple workstations running CentOS 5. Does anybody knows how to keep the packages in sync among workstations? Ideally I want any change made on any machine be able to applied to all other machines. Alternatively, to "push" the changes (add and/or remove packages) from one central server to all other machine is also fine. Thanks Zhihao Lou P.S.: Sorry for the confusion subject line. I really don't know what's the accurate name for the feature I described here. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
