Tengo problemas con una partición de mi disco rígido; se trata de un volumen lógico con las siguientes características
s...@xdom0:~$ sudo lvdisplay /dev/vgsdb/mydocs --- Logical volume --- LV Name /dev/vgsdb/mydocs VG Name vgsdb LV UUID KigHO6-BWP5-fOdK-r3Ex-gMAR-punP-EswGWp LV Write Access read/write LV Status available # open 0 LV Size 100,00 GB Current LE 25600 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 Este volumen estaba incluido para montarse desde fstab, pero ayer el equipo no arrancaba por un error de disco, y aparentemente el problema viene de este volumen. La salida de fsck es la siguiente s...@xdom0:~$ sudo fsck.ext3 /dev/vgsdb/mydocs e2fsck 1.41.3 (12-Oct-2008) fsck.ext3: Attempt to read block from filesystem resulted in short read mientras se intentaba abrir /dev/vgsdb/mydocs ¿Esta podría ser una partición de longitud cero? pero por otra parte, en consola y en /var/log/messages, tanto durante el boot'eo como cuando ejecuto el fsck aparecen sucesivos mensajes de error s...@xdom0:~$ sudo tail /var/log/messages Mar 2 21:06:37 xdom0 kernel: sdb: Write Protect is off Mar 2 21:06:37 xdom0 kernel: SCSI device sdb: drive cache: write back Mar 2 21:06:37 xdom0 kernel: SCSI device sdb: 976773168 512-byte hdwr sectors (500108 MB) Mar 2 21:06:37 xdom0 kernel: sdb: Write Protect is off Mar 2 21:06:37 xdom0 kernel: SCSI device sdb: drive cache: write back Mar 2 21:07:03 xdom0 kernel: ata2: EH complete Mar 2 21:07:15 xdom0 last message repeated 4 times Mar 2 21:07:18 xdom0 kernel: sd 1:0:0:0: SCSI error: return code = 0x08000002 Mar 2 21:07:18 xdom0 kernel: sdb: Current: sense key: Medium Error Mar 2 21:07:18 xdom0 kernel: Additional sense: Unrecovered read error - auto reallocate failed Mar 2 21:07:18 xdom0 kernel: end_request: I/O error, dev sdb, sector 447 Mar 2 21:07:18 xdom0 kernel: ata2: EH complete Mar 2 21:07:18 xdom0 kernel: SCSI device sdb: 976773168 512-byte hdwr sectors (500108 MB) Mar 2 21:07:21 xdom0 kernel: ata2: EH complete Mar 2 21:07:34 xdom0 last message repeated 4 times Mar 2 21:07:37 xdom0 kernel: sd 1:0:0:0: SCSI error: return code = 0x08000002 Mar 2 21:07:37 xdom0 kernel: sdb: Current: sense key: Medium Error Mar 2 21:07:37 xdom0 kernel: Additional sense: Unrecovered read error - auto reallocate failed Mar 2 21:07:37 xdom0 kernel: end_request: I/O error, dev sdb, sector 447 Mar 2 21:07:37 xdom0 kernel: ata2: EH complete Mar 2 21:07:37 xdom0 kernel: sdb: Write Protect is off Mar 2 21:07:37 xdom0 kernel: SCSI device sdb: drive cache: write back Mar 2 21:07:37 xdom0 kernel: SCSI device sdb: 976773168 512-byte hdwr sectors (500108 MB) Mar 2 21:07:37 xdom0 kernel: sdb: Write Protect is off Mar 2 21:07:37 xdom0 kernel: SCSI device sdb: drive cache: write back Mar 2 21:23:30 xdom0 -- MARK -- Mar 2 21:43:30 xdom0 -- MARK -- Mar 2 21:48:55 xdom0 kernel: ata2: EH complete Mar 2 21:49:08 xdom0 last message repeated 4 times Mar 2 21:49:11 xdom0 kernel: sd 1:0:0:0: SCSI error: return code = 0x08000002 Mar 2 21:49:11 xdom0 kernel: sdb: Current: sense key: Medium Error Mar 2 21:49:11 xdom0 kernel: Additional sense: Unrecovered read error - auto reallocate failed Mar 2 21:49:11 xdom0 kernel: end_request: I/O error, dev sdb, sector 447 Mar 2 21:49:11 xdom0 kernel: ata2: EH complete Mar 2 21:49:27 xdom0 last message repeated 5 times Mar 2 21:49:30 xdom0 kernel: sd 1:0:0:0: SCSI error: return code = 0x08000002 Mar 2 21:49:30 xdom0 kernel: sdb: Current: sense key: Medium Error Mar 2 21:49:30 xdom0 kernel: Additional sense: Unrecovered read error - auto reallocate failed Mar 2 21:49:30 xdom0 kernel: end_request: I/O error, dev sdb, sector 447 Mar 2 21:49:30 xdom0 kernel: ata2: EH complete Mar 2 21:49:30 xdom0 kernel: SCSI device sdb: 976773168 512-byte hdwr sectors (500108 MB) Mar 2 21:49:30 xdom0 kernel: sdb: Write Protect is off Mar 2 21:49:30 xdom0 kernel: SCSI device sdb: drive cache: write back Mar 2 21:49:30 xdom0 kernel: SCSI device sdb: 976773168 512-byte hdwr sectors (500108 MB) Mar 2 21:49:30 xdom0 kernel: sdb: Write Protect is off Mar 2 21:49:30 xdom0 kernel: SCSI device sdb: drive cache: write back Quisiera saber si hay alguna forma de recuperar la data del volumen y en caso de no ser posible, si hay alguna técnica para marcar las partes del disco que puedan estar dañadas y no perder los 100Gb del volumen. saludos, --edu
