Package: kernel-source-2.4.27
Version: 2.4.27-10sarge2
Severity: important
Tags: patch


kernel panic (usually during backups) on a 4-way smp machine which uses lvm
snapshots.  Included patch is now in 2.4.x mainline, and is as discussed
on the linux-lvm list:

http://www.redhat.com/archives/linux-lvm/2005-March/msg00117.html

The panic has been difficult to reproduce, but the patch from the above
thread does seem to fix.

Patch is against:

kernel-source-2.4.27/drivers/md/lvm-snap.c

--- lvm-snap.c.dist     2006-03-30 12:09:42.000000000 +0100
+++ lvm-snap.c  2006-03-30 12:12:08.000000000 +0100
@@ -119,7 +119,6 @@
        unsigned long mask = lv->lv_snapshot_hash_mask;
        int chunk_size = lv->lv_chunk_size;
        lv_block_exception_t *ret;
-       int i = 0;

        hash_table =
            &hash_table[hashfn(org_dev, org_start, mask, chunk_size)];
@@ -132,15 +131,9 @@
                exception = list_entry(next, lv_block_exception_t,
hash);
                if (exception->rsector_org == org_start &&
                    exception->rdev_org == org_dev) {
-                       if (i) {
-                               /* fun, isn't it? :) */
-                               list_del(next);
-                               list_add(next, hash_table);
-                       }
                        ret = exception;
                        break;
                }
-               i++;
        }
        return ret;
 }

-- System Information:
Debian Release: 3.1
Architecture: i386 (i686)
Kernel: Linux 2.4.27-3-686-smp
Locale: LANG=en_GB, LC_CTYPE=en_GB (charmap=ISO-8859-1)

Versions of packages kernel-source-2.4.27 depends on:
ii  binutils                      2.15-6     The GNU assembler, linker and bina
ii  bzip2                         1.0.2-7    high-quality block-sorting file co
ii  coreutils [fileutils]         5.2.1-2    The GNU core utilities

-- no debconf information


-- 
To UNSUBSCRIBE, email to [EMAIL PROTECTED]
with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

Reply via email to