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https://issues.apache.org/jira/browse/TS-858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13063923#comment-13063923
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Igor Galić commented on TS-858:
-------------------------------
So, apparently, the minimum Volume size is that can be allocated is 128M:
iocore/cache/P_CacheDisk.h:36++
{noformat}
#define VOL_BLOCK_SIZE (1024 * 1024 * 128)
#define MIN_VOL_SIZE VOL_BLOCK_SIZE
{noformat}
iocore/cache/CacheDisk.cc:53
{noformat}
memset(disk_vols, 0, (l / MIN_VOL_SIZE + 1) * sizeof(DiskVol **));
{noformat}
The documentation mentions this in several places:
http://trafficserver.staging.apache.org/docs/trunk/admin/configuration-files/storage.config
http://trafficserver.staging.apache.org/docs/trunk/admin/configuration-files/volume.config
http://trafficserver.staging.apache.org/docs/trunk/admin/configuring-cache/#ReducingCacheCapacity
I still think that this should be caught more gracefully.
> traffic_server segmentation_fault when cache storage value is below 65M
> -----------------------------------------------------------------------
>
> Key: TS-858
> URL: https://issues.apache.org/jira/browse/TS-858
> Project: Traffic Server
> Issue Type: Bug
> Components: Cache
> Affects Versions: 3.0.0
> Environment: Fedora 14
> Reporter: Kevin Giles
> Priority: Minor
> Fix For: 3.1.0
>
>
> specify the storage as var/trafficserver 64M in the storage.conf,
> traffic_server will core dump upon launch, the following is the stack trace:
> {noformat}
> FATAL: Cache.cc:2293: failed assert `dpb && dpb->len == (uint64_t)b`
> traffic_server - STACK TRACE:
> traffic_server(ink_fatal_va+0x8e)[0x82ef221]
> traffic_server(ink_fatal+0x1e)[0x82ef252]
> traffic_server(_ink_assert+0x90)[0x82eeb6c]
> traffic_server(cplist_reconfigure()+0x2fd)[0x8283054]
> traffic_server(CacheProcessor::diskInitialized()+0x19b)[0x827b7d1]
> traffic_server(CacheDisk::openDone(int, void*)+0x40)[0x8291142]
> traffic_server(CacheDisk::clearDone(int, void*)+0xcc)[0x8290eb2]
> traffic_server(Continuation::handleEvent(int, void*)+0x47)[0x810d871]
> traffic_server(AIOCallbackInternal::io_complete(int, void*)+0x2c)[0x82862c8]
> traffic_server(Continuation::handleEvent(int, void*)+0x47)[0x810d871]
> traffic_server(EThread::process_event(Event*, int)+0x10e)[0x82e83f2]
> traffic_server(EThread::execute()+0xa6)[0x82e862a]
> traffic_server[0x82e74b1]
> /lib/libpthread.so.0[0x658e99]
> /lib/libc.so.6(clone+0x5e)[0x59ed2e]
> {noformat}
> It will core dump everytime, if the cache size is set to 65M, traffic_server
> will launch fine.
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