CentOS 5.5
I just came across an instance where my /storage directory was supposedly a read-only file system. I get the error:
mkdir: cannot create directory `test': Read-only file system
df:
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
141G 21G 114G 16% /
/dev/sda1 99M 13M 82M 14% /boot
tmpfs 1001M 0 1001M 0% /dev/shm
/dev/sdb1 1.4T 307G 999G 24% /storage
/dev/sdd1 1.4T 329G 978G 26% /media/hddblack
/dev/sdc1 1.4T 329G 978G 26% /media/hddsilver
mount:
/dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/sda1 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
/dev/sdb1 on /storage type ext3 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
/dev/sdd1 on /media/hddblack type ext3 (ro)
/dev/sdc1 on /media/hddsilver type ext3 (ro)
/storage is clearly a read-write file system. Next I tried this:
mount -o remount,rw /dev/disk/by-label/storage /storage
And now, the filesystem is writable again. Hooray. Except, why did it do this? Here is the mount now:
/dev/mapper/VolGroup00-LogVol00 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/sda1 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
/dev/sdb1 on /storage type ext3 (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
/dev/sdd1 on /media/hddblack type ext3 (ro)
/dev/sdc1 on /media/hddsilver type ext3 (ro)
Pretty much the same thing... any ideas what would cause this or what logs I should look into to find what the problem was?
