Re: [CentOS] USB drive is "read-only file system" and cannot umount - how to fix

2015-10-26 Thread Robert Moskowitz
Just disconnected, power-cycled then reconnected the drive. 
/var/log/messages tell me:


Oct 26 20:50:10 homebase kernel: EXT4-fs warning (device sdd1): 
ext4_clear_journal_err: Filesystem error recorded from previous mount: 
IO failure
Oct 26 20:50:10 homebase kernel: EXT4-fs warning (device sdd1): 
ext4_clear_journal_err: Marking fs in need of filesystem check.
Oct 26 20:50:10 homebase kernel: EXT4-fs (sdd1): warning: mounting fs 
with errors, running e2fsck is recommended

Oct 26 20:50:10 homebase kernel: EXT4-fs (sdd1): recovery complete
Oct 26 20:50:10 homebase kernel: EXT4-fs (sdd1): mounted filesystem with 
ordered data mode. Opts:


First it comes in as sdd when previously it was sdc.  But the drive is 
now R/W.


So do I run e2fsck, and with what options.  From the manpage I am 
assuming I better umount it first...



On 10/25/2015 11:16 AM, Robert Moskowitz wrote:



On 10/25/2015 11:12 AM, Barry Brimer wrote:

I 'just' noticed that at some point, my USB backup drive on my server

is
mounted as read-only and all of my background sync cron jobs have been
failing.

So I need to fix this without rebooting the server.
How can I get this drive r/w?

Have you tried "mount -o remount,rw "?


# mount -o remount,rw /media/HD103SI/
mount: cannot remount block device /dev/sdc1 read-write, is 
write-protected



The unanswered question here is why did it go read only, and does 
this condition still exist?


The burning question of the day..

Should I 'just' unplug it, power cycle it and reconnect it?


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[CentOS] USB drive is "read-only file system" and cannot umount - how to fix

2015-10-25 Thread Robert Moskowitz
I 'just' noticed that at some point, my USB backup drive on my server is 
mounted as read-only and all of my background sync cron jobs have been 
failing.


So I need to fix this without rebooting the server.

I can VNC into the server and running "mount" shows:

/dev/sdc1 on /media/HD103SI type ext4 (rw,nosuid,nodev,uhelper=udisks)

and umount gets:

# umount /dev/sdc1
umount: /media/HD103SI: device is busy.
(In some cases useful info about processes that use
 the device is found by lsof(8) or fuser(1))

How can I get this drive r/w?


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Re: [CentOS] USB drive is "read-only file system" and cannot umount - how to fix

2015-10-25 Thread Robert Moskowitz



On 10/25/2015 11:12 AM, Barry Brimer wrote:

I 'just' noticed that at some point, my USB backup drive on my server

is
mounted as read-only and all of my background sync cron jobs have been
failing.

So I need to fix this without rebooting the server.
How can I get this drive r/w?

Have you tried "mount -o remount,rw "?


# mount -o remount,rw /media/HD103SI/
mount: cannot remount block device /dev/sdc1 read-write, is write-protected



The unanswered question here is why did it go read only, and does this 
condition still exist?


The burning question of the day..

Should I 'just' unplug it, power cycle it and reconnect it?


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Re: [CentOS] USB drive is "read-only file system" and cannot umount - how to fix

2015-10-25 Thread Barry Brimer
I 'just' noticed that at some point, my USB backup drive on my server
>is 
>mounted as read-only and all of my background sync cron jobs have been 
>failing.
>
>So I need to fix this without rebooting the server.

>How can I get this drive r/w?

Have you tried "mount -o remount,rw "?

The unanswered question here is why did it go read only, and does this 
condition still exist?

Barry
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