Messages in this thread Patch in this message |  | | | Date | Fri, 15 Oct 2004 22:48:22 -0700 | | From | Pete Zaitcev <> | | Subject | Patch to add RAID autostart to IBM partitions |
Hi, guys:
This is an implementation of essentially the same mechanism which exists in msdos.c and sun.c. It is needed when initrd tries to mount a root on a RAID. One might ask, why the heck initrd cannot do it without a kernel help. The answer is in the contrived API of the MD driver: there is no way to ask "assemble md0"; applications must list components. Anyway, if msdos.c does it, surely ibm.c ought to do it as well.
Please apply.
-- Pete
P.S. Martin: this is for bug LTC10616.
diff -urp -X dontdiff linux-2.6.9-rc4-mm1/fs/partitions/ibm.c linux-2.6.9-rc4-mm1-autoraid/fs/partitions/ibm.c --- linux-2.6.9-rc4-mm1/fs/partitions/ibm.c 2003-10-01 15:18:05.000000000 -0700 +++ linux-2.6.9-rc4-mm1-autoraid/fs/partitions/ibm.c 2004-10-15 22:38:12.712453680 -0700 @@ -129,6 +129,7 @@ ibm_partition(struct parsed_partitions * while ((data = read_dev_sector(bdev, blk*(blocksize/512), §)) != NULL) { format1_label_t f1; + char *ch; memcpy(&f1, data, sizeof(format1_label_t)); put_dev_sector(sect); @@ -154,6 +155,14 @@ ibm_partition(struct parsed_partitions * put_partition(state, counter + 1, offset * (blocksize >> 9), size * (blocksize >> 9)); + + /* Corrupting the label buffer now to save the stack. */ + EBCASC(f1.DS1DSNAM, 44); + f1.DS1DSNAM[44] = 0; + ch = strstr(f1.DS1DSNAM, "PART"); + if (ch != NULL && strncmp(ch + 9, "RAID ", 6) == 0) + state->parts[counter + 1].flags = 1; + counter++; blk++; } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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