On Wed, Oct 29, 2008 at 7:06 AM, Douglas A. Tutty <[EMAIL PROTECTED]> wrote: > On Wed, Oct 29, 2008 at 05:44:31AM +0100, Francesco Pietra wrote: >> Major mistake (shutting down the ups unit) while doing a parallel >> computation on all 8 processors (UMA-type machine amd64 lenny with >> raid 1 two disks). >> >> On restarting the machine and the computation, >> >> "fdisk -l" showed >> "Disk /dev/md6 doesn't contain a valid partition table" >> >> >> "df -h" showed >> 97G 1.1G 91G 2% /home >> (which should have been ca 70% used). >> >> All other partitions were OK, as they should be. > > It would help us to follow if you provided a map of device to > mount-point since, e.g. whe don't know what device is /home.
As from my raid1 setup documantation: md 6 is /home/francesco/ md5 is /tmp Any command to check the above from the present status? ==== In present status; "cat /proc/mdstat: Personalities : [raid1] md6 : active raid1 sda8[0] sdb8[1] 102341952 blocks [2/2] [UU] md5 : active raid1 sda7[0] sdb7[1] 1951744 blocks [2/2] [UU] md4 : active raid1 sda6[0] sdb6[1] 2931712 blocks [2/2] [UU] md3 : active raid1 sda5[0] sdb5[1] 14651136 blocks [2/2] [UU] md1 : active(auto-read-only) raid1 sda2[0] sdb2[1] 6835584 blocks [2/2] [UU] md0 : active raid1 sda1[0] sdb1[1] 2931712 blocks [2/2] [UU] md2 : active raid1 sda3[0] sdb3[1] 14651200 blocks [2/2] [UU] unused devices: <none> ========= "fdisk -l": Disk /dev/sda: 150.0 GB, 150039945216 bytes 255 heads, 63 sectors/track, 18241 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x0009e776 Device Boot Start End Blocks Id System /dev/sda1 * 1 365 2931831 fd Linux raid autodetect /dev/sda2 366 1216 6835657+ fd Linux raid autodetect /dev/sda3 1217 3040 14651280 fd Linux raid autodetect /dev/sda4 3041 18213 121877122+ 5 Extended /dev/sda5 3041 4864 14651248+ fd Linux raid autodetect /dev/sda6 4865 5229 2931831 fd Linux raid autodetect /dev/sda7 5230 5472 1951866 fd Linux raid autodetect /dev/sda8 5473 18213 102342051 fd Linux raid autodetect Disk /dev/sdb: 150.0 GB, 150039945216 bytes 255 heads, 63 sectors/track, 18241 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x000b05ba Device BootDisk /dev/md2 doesn't contain a valid partition table Disk /dev/md0 doesn't contain a valid partition table Start End Blocks Id System /dev/sdb1 * 1 365 2931831 fd Linux raid autodetect /dev/sdb2 366 1216 6835657+ fd Linux raid autodetect /dev/sdb3 1217 3040 14651280 fd Linux raid autodetect /dev/sdb4 3041 18213 121877122+ 5 Extended /dev/sdb5 3041 4864 14651248+ fd Linux raid autodetect /dev/sdb6 4865 5229 2931831 fd Linux raid autodetect /dev/sdb7 5230 5472 1951866 fd Linux raid autodetect /dev/sdb8 5473 18213 102342051 fd Linux raid autodetect Disk /dev/md2: 15.0 GB, 15002828800 bytes 2 heads, 4 sectors/track, 3662800 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk identifier: 0x00000000 Disk /dev/md0: 3002 MB, 3002073088 bytes 2 heads, 4 sectors/track, 732928 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk identifier: 0x00000000 Disk /dev/md1: 6999 MB, 6999638016 bytes 2 heads,Disk /dev/md1 doesn't contain a valid partition table Disk /dev/md3 doesn't contain a valid partition table Disk /dev/md4 doesn't contain a valid partition table Disk /dev/md5 doesn't contain a valid partition table Disk /dev/md6 doesn't contain a valid partition table 4 sectors/track, 1708896 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk identifier: 0x00000000 Disk /dev/md3: 15.0 GB, 15002763264 bytes 2 heads, 4 sectors/track, 3662784 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk identifier: 0x00000000 Disk /dev/md4: 3002 MB, 3002073088 bytes 2 heads, 4 sectors/track, 732928 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk identifier: 0x00000000 Disk /dev/md5: 1998 MB, 1998585856 bytes 2 heads, 4 sectors/track, 487936 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk identifier: 0x00000000 Disk /dev/md6: 104.7 GB, 104798158848 bytes 2 heads, 4 sectors/track, 25585488 cylinders Units = cylinders of 8 * 512 = 4096 bytes Disk identifier: 0x00000000 =================== > >> "top -i" showed >> all 8 instances fo the parallel procedure >> md6_resync (CPU% 6) >> md5_resync (CPU% 0) >> kjournald >> >> >> After some time md6_resync, md5_resync, kjournald disappeared, leaving >> only the 8 parallel procedures. >> >> Commanding "cat density6.out" the parallel procedure seems to work >> regularly, confirmed by "la -l" which shows all files (some as large >> as 100MB) for the present computation and the 5 analogous computations >> already carried out (of these five computations I had scp sent a copy >> to my desktop). >> >> Where are the data for the current 6th computation being stored? >> >> The computer was then shutdown and restarted >> >> df -h output as above. >> >> fdisk -l >> Neither /dev/md6 nor /dev/md5 have a valid partition table. >> >> cd to my home shows all directories and files for work (in my home >> only data from computations, all applications installed in >> /usr/local). >> >> What could I do to set up the system in order before resuming the >> computation? > > > I don't suppose that you kept a copy of your partition table as part of > your backup script? e.g. /sbin/sfdisk -d <device>? Unfortunately not. I take notice of this for the future Thanks francesco > > If so, you can write it back. > > Doug. > > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] > > -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]