[ale] mounted filesystem becomes read-only
Geoffrey
lists at serioustechnology.com
Fri Jun 11 15:10:33 EDT 2010
Lightner, Jeff wrote:
> I don't think so. Running a disk on USB is one thing - trying to run a
> SAN on USB would be indicative of a PHB or a masochist. (Or maybe a
> sadist like BOFH who wants to make sure his users don't expect good
> performance.)
My bad. Point is, the original issue I posted about is a usb connected
drive.
>
> I think he was responding to the Dell and iSCSI comment Dennis made. It
> peaked my curiosity as to what components he thought made such a SAN
> crap. Dell servers work fairly well and doing fibre to them from our
> EMC arrays works well so I was suspecting it was either iSCSI itself or
> maybe whatever Dell branded array or intermediate components might be in
> such a SAN
Currently have a client doing much the same on RHEL and the hardware has
performed well.
>
> -----Original Message-----
> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
> Geoffrey
> Sent: Friday, June 11, 2010 2:35 PM
> To: Atlanta Linux Enthusiasts - Yes! We run Linux!
> Subject: Re: [ale] mounted filesystem becomes read-only
>
> Lightner, Jeff wrote:
>> Crap because it's iSCSI or because it's Dell?
>
> I thought he was referring to my post indicating it was a usb connected
> drive.
>
>> -----Original Message-----
>> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
>> Geoffrey
>> Sent: Friday, June 11, 2010 12:13 PM
>> To: Atlanta Linux Enthusiasts - Yes! We run Linux!
>> Subject: Re: [ale] mounted filesystem becomes read-only
>>
>> Jeff Hubbs wrote:
>>> Yep - that's a SAN that's not worth a crap.
>> Amen.
>>
>>> On 6/11/10 9:10 AM, Dennis Ruzeski wrote:
>>>> Check out the command lsattr. You can make a FS ro with it even
>> though
>>>> mount will show it rw.
>>>> Also, is that disk on a san? I'm seeing this happen randomly with
> our
>>>> dell san connected via iscsi to the vmware server.
>>>>
>>>> --Dennis
>>>>
>>>>
>>>>
>>>> On Fri, Jun 11, 2010 at 8:31 AM, Greg
>> Freemyer<greg.freemyer at gmail.com> wrote:
>>>>
>>>>> sometimes if the kernel sees fs corruption it will internally set a
>> fs
>>>>> to readonly.
>>>>>
>>>>> check your kernel logs
>>>>>
>>>>> On Fri, Jun 11, 2010 at 8:12 AM,
>> Geoffrey<lists at serioustechnology.com> wrote:
>>>>>
>>>>>> I don't get this. I have a mounted file system that I just
> created
>> a vm
>>>>>> on via vmware player. It's never been unmounted, yet if I try to
>> create
>>>>>> a file on it I get:
>>>>>>
>>>>>> touch foo
>>>>>> touch: cannot touch `foo': Read-only file system
>>>>>>
>>>>>> More weirdness:
>>>>>>
>>>>>> root at mac/media/vmware> mount|grep vmware
>>>>>> /dev/sdb3 on /media/vmware type ext3 (rw)
>>>>>>
>>>>>> The OS clearly thinks it's a writable file system.
>>>>>>
>>>>>> Clues anyone?????
>>>>>>
>>>>>> I can't unmount it either as it says it's busy, and I'm pretty
> sure
>> that
>>>>>> has something to do with vmware:
>>>>>>
>>>>>> ps aux|grep vmware
>>>>>> root 2837 0.0 0.0 18552 884 ? Ss Jun09 0:00
>>>>>> /usr/bin/vmware-usbarbitrator
>>>>>> root 2926 0.0 0.0 10980 156 ? Ss Jun09 0:00
>>>>>> /usr/bin/vmnet-dhcpd -s 6 -cf /etc/vmware/vmnet1/dhcpd/dhcpd.conf
>> -lf
>>>>>> /etc/vmware/vmnet1/dhcpd/dhcpd.leases -pf
>>>>>> /var/run/vmnet-dhcpd-vmnet1.pid vmnet1
>>>>>> root 2949 0.0 0.0 10980 540 ? Ss Jun09 0:00
>>>>>> /usr/bin/vmnet-dhcpd -s 6 -cf /etc/vmware/vmnet8/dhcpd/dhcpd.conf
>> -lf
>>>>>> /etc/vmware/vmnet8/dhcpd/dhcpd.leases -pf
>>>>>> /var/run/vmnet-dhcpd-vmnet8.pid vmnet8
>>>>>> root 2955 0.0 0.0 9116 964 ? S Jun09 0:37
>>>>>> /usr/bin/vmnet-natd -s 6 -m /etc/vmware/vmnet8/nat.mac -c
>>>>>> /etc/vmware/vmnet8/nat/nat.conf
>>>>>> esoteric 14124 0.0 0.0 2852 780 ? S< Jun10 0:00
>>>>>> /usr/lib/vmware/bin/thnuclnt -pdir
>> /tmp/vmware-esoteric/thnuclnt-14114 -fg
>>>>>> esoteric 14126 0.0 0.0 11304 980 ? S< Jun10 0:00
>>>>>> /usr/lib/vmware/bin/thnuclnt -pdir
>> /tmp/vmware-esoteric/thnuclnt-14114 -fg
>>>>>> esoteric 14128 0.0 0.0 57468 248 ? S< Jun10 0:00
>>>>>> /usr/lib/vmware/bin/thnuclnt -pdir
>> /tmp/vmware-esoteric/thnuclnt-14114 -fg
>>>>>> esoteric 14129 0.0 0.0 57472 224 ? S< Jun10 0:00
>>>>>> /usr/lib/vmware/bin/thnuclnt -pdir
>> /tmp/vmware-esoteric/thnuclnt-14114 -fg
>>>>>> --
>>>>>> Until later, Geoffrey
>>>>>>
>>>>>> "I predict future happiness for America if they can prevent
>>>>>> the government from wasting the labors of the people under
>>>>>> the pretense of taking care of them."
>>>>>> - Thomas Jefferson
>>>>>> _______________________________________________
>>>>>> Ale mailing list
>>>>>> Ale at ale.org
>>>>>> http://mail.ale.org/mailman/listinfo/ale
>>>>>> See JOBS, ANNOUNCE and SCHOOLS lists at
>>>>>> http://mail.ale.org/mailman/listinfo
>>>>>>
>>>>>>
>>>>> --
>>>>> Greg Freemyer
>>>>> Head of EDD Tape Extraction and Processing team
>>>>> Litigation Triage Solutions Specialist
>>>>> http://www.linkedin.com/in/gregfreemyer
>>>>> CNN/TruTV Aired Forensic Imaging Demo -
>>>>>
> http://insession.blogs.cnn.com/2010/03/23/how-computer-evidence-gets-ret
>> rieved/
>>>>> The Norcross Group
>>>>> The Intersection of Evidence& Technology
>>>>> http://www.norcrossgroup.com
>>>>>
>>>>> _______________________________________________
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>>>>>
>>>>>
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>>
>
>
--
Until later, Geoffrey
"I predict future happiness for America if they can prevent
the government from wasting the labors of the people under
the pretense of taking care of them."
- Thomas Jefferson
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