Hello,
I have a external SCSI drive in an enclosure. It has several EXT4 partitions and a JFS partition that I use for a personal DVR.
All of a sudden today, the JFS partition is refusing to mount. I get the message
Code:
Error mounting system-managed device /dev/sdc7: wrong fs type, bad option, bad superblock on /dev/sdc7, missing codepage or helper program, or other error
Hoping for more clarity, I wend to dmesg and got this:
Code:
3.547783] usb-storage 1-1:1.0: USB Mass Storage device detected
[ 3.547961] scsi host10: usb-storage 1-1:1.0
[ 3.548091] usbcore: registered new interface driver usb-storage
[ 3.549666] usbcore: registered new interface driver uas
[ 4.576963] scsi 10:0:0:0: Direct-Access WDC WD10 01FALS-00J7B1 PQ: 0 ANSI: 2 CCS
[ 4.577201] sd 10:0:0:0: Attached scsi generic sg3 type 0
[ 4.577816] sd 10:0:0:0: [sdc] 1953525168 512-byte logical blocks: (1.00 TB/932 GiB)
[ 4.578685] sd 10:0:0:0: [sdc] Write Protect is off
[ 4.578686] sd 10:0:0:0: [sdc] Mode Sense: 00 38 00 00
[ 4.579556] sd 10:0:0:0: [sdc] Asking for cache data failed
[ 4.579655] sd 10:0:0:0: [sdc] Assuming drive cache: write through
[ 4.625686] sdc: sdc4 < sdc5 sdc6 sdc7 >
[ 4.628306] sd 10:0:0:0: [sdc] Attached SCSI disk
I'm not sure of the drive cache errors are relevant. I've never been able to query the SMART information from this drive due to its being in an enclosure. Moreover, the other two partitions on this drive are working fine.
Fdisk shows the partition:
Code:
Command (m for help): p
Disk /dev/sdc: 931.53 GiB, 1000204886016 bytes, 1953525168 sectors
Disk model: 01FALS-00J7B1
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x4242d502
Device Boot Start End Sectors Size Id Type
/dev/sdc4 115310592 1953523711 1838213120 876.5G 5 Extended
/dev/sdc5 1344114688 1952370687 608256000 290G 83 Linux
/dev/sdc6 115312640 127600639 12288000 5.9G 7 HPFS/NTFS/exFAT
/dev/sdc7 127602688 1344112639 1216509952 580.1G 83 Linux
df does not show the partition:
Code:
mary@mythbox:~$ df
Filesystem 1K-blocks Used Available Use% Mounted on
udev 3997268 0 3997268 0% /dev
tmpfs 815220 3108 812112 1% /run
/dev/sda7 71528576 21523032 46329028 32% /
tmpfs 4076092 0 4076092 0% /dev/shm
tmpfs 5120 4 5116 1% /run/lock
tmpfs 4076092 0 4076092 0% /sys/fs/cgroup
/dev/sdb1 100658932 26406392 69132628 28% /media/music
/dev/sdb2 100658964 31474700 64064352 33% /media/home_video
/dev/sdb3 41195920 6975164 32121464 18% /media/photos
/dev/sdb6 173120312 72233080 92070196 44% /home
/dev/sda6 523248 24 523224 1% /boot/efi
tmpfs 815216 20 815196 1% /run/user/1000
/dev/sdc5 299223672 217887600 66113292 77% /media/mary/backup
/dev/sdc6 6143996 96844 6047152 2% /media/mary/Windows
What can I look at next? The list of potential errors is so large ...
